mirror of
https://github.com/k3s-io/kubernetes.git
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remove the deprecated kube-dns as an option in kubeadm
This commit is contained in:
Sandeep Rajan
parent
35c233f18d
commit
b8a1bd6a6c
@ -156,9 +156,6 @@ type DNSAddOnType string
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const (
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// CoreDNS add-on type
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CoreDNS DNSAddOnType = "CoreDNS"
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// KubeDNS add-on type
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KubeDNS DNSAddOnType = "kube-dns"
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)
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// DNS defines the DNS addon that should be used in the cluster
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@ -145,9 +145,6 @@ type DNSAddOnType string
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const (
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// CoreDNS add-on type
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CoreDNS DNSAddOnType = "CoreDNS"
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// KubeDNS add-on type
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KubeDNS DNSAddOnType = "kube-dns"
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)
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// DNS defines the DNS addon that should be used in the cluster
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@ -141,9 +141,6 @@ type DNSAddOnType string
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const (
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// CoreDNS add-on type
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CoreDNS DNSAddOnType = "CoreDNS"
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// KubeDNS add-on type
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KubeDNS DNSAddOnType = "kube-dns"
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)
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// DNS defines the DNS addon that should be used in the cluster
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@ -175,16 +175,6 @@ func TestConfigImagesListRunWithoutPath(t *testing.T) {
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},
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expectedImages: defaultNumberOfImages,
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},
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{
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name: "kube-dns enabled",
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cfg: kubeadmapiv1beta2.ClusterConfiguration{
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KubernetesVersion: dummyKubernetesVersionStr,
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DNS: kubeadmapiv1beta2.DNS{
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Type: kubeadmapiv1beta2.KubeDNS,
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},
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},
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expectedImages: defaultNumberOfImages + 2,
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},
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}
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outputFlags := output.NewOutputFlags(&imageTextPrintFlags{}).WithTypeSetter(outputapischeme.Scheme).WithDefaultOutput(output.TextOutput)
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@ -104,7 +104,7 @@ func newCmdApply(apf *applyPlanFlags) *cobra.Command {
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// - Upgrades the control plane components
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// - Applies the other resources that'd be created with kubeadm init as well, like
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// - Creating the RBAC rules for the bootstrap tokens and the cluster-info ConfigMap
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// - Applying new kube-dns and kube-proxy manifests
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// - Applying new CorDNS and kube-proxy manifests
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// - Uploads the newly used configuration to the cluster ConfigMap
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func runApply(flags *applyFlags, args []string) error {
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@ -177,7 +177,6 @@ func genUpgradePlan(up *upgrade.Upgrade, isExternalEtcd bool) (*outputapi.Upgrad
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components = append(components, newComponentUpgradePlan(constants.KubeProxy, up.Before.KubeVersion, up.After.KubeVersion))
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components = appendDNSComponent(components, up, kubeadmapi.CoreDNS, constants.CoreDNS)
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components = appendDNSComponent(components, up, kubeadmapi.KubeDNS, constants.KubeDNS)
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if !isExternalEtcd {
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components = append(components, newComponentUpgradePlan(constants.Etcd, up.Before.EtcdVersion, up.After.EtcdVersion))
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@ -79,45 +79,45 @@ func TestPrintAvailableUpgrades(t *testing.T) {
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name: "Patch version available",
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upgrades: []upgrade.Upgrade{
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{
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Description: "version in the v1.8 series",
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Description: "version in the v1.18 series",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.1",
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KubeVersion: "v1.18.1",
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KubeletVersions: map[string]uint16{
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"v1.8.1": 1,
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"v1.18.1": 1,
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},
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KubeadmVersion: "v1.8.2",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.1",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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After: upgrade.ClusterState{
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KubeVersion: "v1.8.3",
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KubeadmVersion: "v1.8.3",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeVersion: "v1.18.4",
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KubeadmVersion: "v1.18.4",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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},
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},
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expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.8.1 v1.8.3
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.18.1 v1.18.4
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Upgrade to the latest version in the v1.8 series:
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Upgrade to the latest version in the v1.18 series:
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COMPONENT CURRENT TARGET
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kube-apiserver v1.8.1 v1.8.3
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kube-controller-manager v1.8.1 v1.8.3
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kube-scheduler v1.8.1 v1.8.3
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kube-proxy v1.8.1 v1.8.3
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kube-dns 1.14.5 1.14.5
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etcd 3.0.17 3.0.17
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kube-apiserver v1.18.1 v1.18.4
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kube-controller-manager v1.18.1 v1.18.4
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kube-scheduler v1.18.1 v1.18.4
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kube-proxy v1.18.1 v1.18.4
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CoreDNS 1.6.7 1.6.7
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etcd 3.4.3-0 3.4.3-0
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You can now apply the upgrade by executing the following command:
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kubeadm upgrade apply v1.8.3
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kubeadm upgrade apply v1.18.4
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.8.3.
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.18.4.
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_____________________________________________________________________
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@ -129,41 +129,43 @@ _____________________________________________________________________
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{
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Description: "stable version",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.3",
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KubeVersion: "v1.18.4",
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KubeletVersions: map[string]uint16{
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"v1.8.3": 1,
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"v1.18.4": 1,
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},
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KubeadmVersion: "v1.9.0",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.4",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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After: upgrade.ClusterState{
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KubeVersion: "v1.9.0",
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KubeadmVersion: "v1.9.0",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.13",
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EtcdVersion: "3.1.12",
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KubeVersion: "v1.19.0",
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KubeadmVersion: "v1.19.0",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.7.0",
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EtcdVersion: "3.4.7-0",
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},
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},
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},
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expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.8.3 v1.9.0
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.18.4 v1.19.0
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Upgrade to the latest stable version:
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COMPONENT CURRENT TARGET
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kube-apiserver v1.8.3 v1.9.0
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kube-controller-manager v1.8.3 v1.9.0
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kube-scheduler v1.8.3 v1.9.0
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kube-proxy v1.8.3 v1.9.0
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kube-dns 1.14.5 1.14.13
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etcd 3.0.17 3.1.12
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kube-apiserver v1.18.4 v1.19.0
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kube-controller-manager v1.18.4 v1.19.0
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kube-scheduler v1.18.4 v1.19.0
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kube-proxy v1.18.4 v1.19.0
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CoreDNS 1.6.7 1.7.0
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etcd 3.4.3-0 3.4.7-0
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You can now apply the upgrade by executing the following command:
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kubeadm upgrade apply v1.9.0
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kubeadm upgrade apply v1.19.0
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.0.
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_____________________________________________________________________
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@ -173,85 +175,85 @@ _____________________________________________________________________
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name: "patch and minor version available",
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upgrades: []upgrade.Upgrade{
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{
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Description: "version in the v1.8 series",
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Description: "version in the v1.18 series",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.3",
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KubeVersion: "v1.18.3",
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KubeletVersions: map[string]uint16{
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"v1.8.3": 1,
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"v1.18.3": 1,
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},
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KubeadmVersion: "v1.8.3",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.3",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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After: upgrade.ClusterState{
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KubeVersion: "v1.8.5",
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KubeadmVersion: "v1.8.3",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeVersion: "v1.18.5",
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KubeadmVersion: "v1.18.3",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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},
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{
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Description: "stable version",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.3",
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KubeVersion: "v1.18.3",
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KubeletVersions: map[string]uint16{
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"v1.8.3": 1,
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"v1.18.3": 1,
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},
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KubeadmVersion: "v1.8.3",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.3",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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After: upgrade.ClusterState{
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KubeVersion: "v1.9.0",
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KubeadmVersion: "v1.9.0",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.13",
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EtcdVersion: "3.1.12",
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KubeVersion: "v1.19.0",
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KubeadmVersion: "v1.19.0",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.7.0",
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EtcdVersion: "3.4.7-0",
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},
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},
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},
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expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.8.3 v1.8.5
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.18.3 v1.18.5
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Upgrade to the latest version in the v1.8 series:
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Upgrade to the latest version in the v1.18 series:
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COMPONENT CURRENT TARGET
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kube-apiserver v1.8.3 v1.8.5
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kube-controller-manager v1.8.3 v1.8.5
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kube-scheduler v1.8.3 v1.8.5
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kube-proxy v1.8.3 v1.8.5
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kube-dns 1.14.5 1.14.5
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etcd 3.0.17 3.0.17
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kube-apiserver v1.18.3 v1.18.5
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kube-controller-manager v1.18.3 v1.18.5
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kube-scheduler v1.18.3 v1.18.5
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kube-proxy v1.18.3 v1.18.5
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CoreDNS 1.6.7 1.6.7
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etcd 3.4.3-0 3.4.3-0
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You can now apply the upgrade by executing the following command:
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kubeadm upgrade apply v1.8.5
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kubeadm upgrade apply v1.18.5
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_____________________________________________________________________
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Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.8.3 v1.9.0
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.18.3 v1.19.0
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Upgrade to the latest stable version:
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COMPONENT CURRENT TARGET
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kube-apiserver v1.8.3 v1.9.0
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kube-controller-manager v1.8.3 v1.9.0
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kube-scheduler v1.8.3 v1.9.0
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kube-proxy v1.8.3 v1.9.0
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kube-dns 1.14.5 1.14.13
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etcd 3.0.17 3.1.12
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kube-apiserver v1.18.3 v1.19.0
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kube-controller-manager v1.18.3 v1.19.0
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kube-scheduler v1.18.3 v1.19.0
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kube-proxy v1.18.3 v1.19.0
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CoreDNS 1.6.7 1.7.0
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etcd 3.4.3-0 3.4.7-0
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You can now apply the upgrade by executing the following command:
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kubeadm upgrade apply v1.9.0
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kubeadm upgrade apply v1.19.0
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.9.0.
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.0.
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_____________________________________________________________________
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@ -263,43 +265,43 @@ _____________________________________________________________________
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{
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Description: "experimental version",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.5",
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KubeVersion: "v1.18.5",
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KubeletVersions: map[string]uint16{
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"v1.8.5": 1,
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"v1.18.5": 1,
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},
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KubeadmVersion: "v1.8.5",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.5",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.6.7",
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EtcdVersion: "3.4.3-0",
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},
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After: upgrade.ClusterState{
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KubeVersion: "v1.9.0-beta.1",
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KubeadmVersion: "v1.9.0-beta.1",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.13",
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EtcdVersion: "3.1.12",
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KubeVersion: "v1.19.0-beta.1",
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KubeadmVersion: "v1.19.0-beta.1",
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DNSType: kubeadmapi.CoreDNS,
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DNSVersion: "1.7.0",
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EtcdVersion: "3.4.7-0",
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},
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},
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},
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expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.8.5 v1.9.0-beta.1
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COMPONENT CURRENT TARGET
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kubelet 1 x v1.18.5 v1.19.0-beta.1
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Upgrade to the latest experimental version:
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COMPONENT CURRENT TARGET
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kube-apiserver v1.8.5 v1.9.0-beta.1
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kube-controller-manager v1.8.5 v1.9.0-beta.1
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kube-scheduler v1.8.5 v1.9.0-beta.1
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kube-proxy v1.8.5 v1.9.0-beta.1
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kube-dns 1.14.5 1.14.13
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etcd 3.0.17 3.1.12
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kube-apiserver v1.18.5 v1.19.0-beta.1
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kube-controller-manager v1.18.5 v1.19.0-beta.1
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kube-scheduler v1.18.5 v1.19.0-beta.1
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kube-proxy v1.18.5 v1.19.0-beta.1
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CoreDNS 1.6.7 1.7.0
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etcd 3.4.3-0 3.4.7-0
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You can now apply the upgrade by executing the following command:
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kubeadm upgrade apply v1.9.0-beta.1 --allow-experimental-upgrades
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kubeadm upgrade apply v1.19.0-beta.1 --allow-experimental-upgrades
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.9.0-beta.1.
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Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.0-beta.1.
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_____________________________________________________________________
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@ -311,43 +313,43 @@ _____________________________________________________________________
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{
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Description: "release candidate version",
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Before: upgrade.ClusterState{
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KubeVersion: "v1.8.5",
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KubeVersion: "v1.18.5",
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KubeletVersions: map[string]uint16{
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"v1.8.5": 1,
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"v1.18.5": 1,
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},
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KubeadmVersion: "v1.8.5",
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DNSType: kubeadmapi.KubeDNS,
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DNSVersion: "1.14.5",
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EtcdVersion: "3.0.17",
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KubeadmVersion: "v1.18.5",
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||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.6.7",
|
||||
EtcdVersion: "3.4.3-0",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.9.0-rc.1",
|
||||
KubeadmVersion: "v1.9.0-rc.1",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.13",
|
||||
EtcdVersion: "3.1.12",
|
||||
KubeVersion: "v1.19.0-rc.1",
|
||||
KubeadmVersion: "v1.19.0-rc.1",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.7.0",
|
||||
EtcdVersion: "3.4.7-0",
|
||||
},
|
||||
},
|
||||
},
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.8.5 v1.9.0-rc.1
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.18.5 v1.19.0-rc.1
|
||||
|
||||
Upgrade to the latest release candidate version:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.8.5 v1.9.0-rc.1
|
||||
kube-controller-manager v1.8.5 v1.9.0-rc.1
|
||||
kube-scheduler v1.8.5 v1.9.0-rc.1
|
||||
kube-proxy v1.8.5 v1.9.0-rc.1
|
||||
kube-dns 1.14.5 1.14.13
|
||||
etcd 3.0.17 3.1.12
|
||||
kube-apiserver v1.18.5 v1.19.0-rc.1
|
||||
kube-controller-manager v1.18.5 v1.19.0-rc.1
|
||||
kube-scheduler v1.18.5 v1.19.0-rc.1
|
||||
kube-proxy v1.18.5 v1.19.0-rc.1
|
||||
CoreDNS 1.6.7 1.7.0
|
||||
etcd 3.4.3-0 3.4.7-0
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.9.0-rc.1 --allow-release-candidate-upgrades
|
||||
kubeadm upgrade apply v1.19.0-rc.1 --allow-release-candidate-upgrades
|
||||
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.9.0-rc.1.
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.0-rc.1.
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
@ -357,47 +359,47 @@ _____________________________________________________________________
|
||||
name: "multiple kubelet versions",
|
||||
upgrades: []upgrade.Upgrade{
|
||||
{
|
||||
Description: "version in the v1.9 series",
|
||||
Description: "version in the v1.19 series",
|
||||
Before: upgrade.ClusterState{
|
||||
KubeVersion: "v1.9.2",
|
||||
KubeVersion: "v1.19.2",
|
||||
KubeletVersions: map[string]uint16{
|
||||
"v1.9.2": 1,
|
||||
"v1.9.3": 2,
|
||||
"v1.19.2": 1,
|
||||
"v1.19.3": 2,
|
||||
},
|
||||
KubeadmVersion: "v1.9.2",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.5",
|
||||
EtcdVersion: "3.0.17",
|
||||
KubeadmVersion: "v1.19.2",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.7.0",
|
||||
EtcdVersion: "3.4.7-0",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.9.3",
|
||||
KubeadmVersion: "v1.9.3",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.8",
|
||||
EtcdVersion: "3.1.12",
|
||||
KubeVersion: "v1.19.3",
|
||||
KubeadmVersion: "v1.19.3",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.7.0",
|
||||
EtcdVersion: "3.4.7-0",
|
||||
},
|
||||
},
|
||||
},
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.9.2 v1.9.3
|
||||
2 x v1.9.3 v1.9.3
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.19.2 v1.19.3
|
||||
2 x v1.19.3 v1.19.3
|
||||
|
||||
Upgrade to the latest version in the v1.9 series:
|
||||
Upgrade to the latest version in the v1.19 series:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.9.2 v1.9.3
|
||||
kube-controller-manager v1.9.2 v1.9.3
|
||||
kube-scheduler v1.9.2 v1.9.3
|
||||
kube-proxy v1.9.2 v1.9.3
|
||||
kube-dns 1.14.5 1.14.8
|
||||
etcd 3.0.17 3.1.12
|
||||
kube-apiserver v1.19.2 v1.19.3
|
||||
kube-controller-manager v1.19.2 v1.19.3
|
||||
kube-scheduler v1.19.2 v1.19.3
|
||||
kube-proxy v1.19.2 v1.19.3
|
||||
CoreDNS 1.7.0 1.7.0
|
||||
etcd 3.4.7-0 3.4.7-0
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.9.3
|
||||
kubeadm upgrade apply v1.19.3
|
||||
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.9.3.
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.3.
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
@ -408,185 +410,45 @@ _____________________________________________________________________
|
||||
name: "external etcd upgrade available",
|
||||
upgrades: []upgrade.Upgrade{
|
||||
{
|
||||
Description: "version in the v1.9 series",
|
||||
Description: "version in the v1.19 series",
|
||||
Before: upgrade.ClusterState{
|
||||
KubeVersion: "v1.9.2",
|
||||
KubeVersion: "v1.19.2",
|
||||
KubeletVersions: map[string]uint16{
|
||||
"v1.9.2": 1,
|
||||
"v1.19.2": 1,
|
||||
},
|
||||
KubeadmVersion: "v1.9.2",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.5",
|
||||
EtcdVersion: "3.0.17",
|
||||
KubeadmVersion: "v1.19.2",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.7.0",
|
||||
EtcdVersion: "3.4.7-0",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.9.3",
|
||||
KubeadmVersion: "v1.9.3",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.8",
|
||||
EtcdVersion: "3.1.12",
|
||||
KubeVersion: "v1.19.3",
|
||||
KubeadmVersion: "v1.19.3",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.7.0",
|
||||
EtcdVersion: "3.4.7-0",
|
||||
},
|
||||
},
|
||||
},
|
||||
externalEtcd: true,
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.9.2 v1.9.3
|
||||
|
||||
Upgrade to the latest version in the v1.9 series:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.9.2 v1.9.3
|
||||
kube-controller-manager v1.9.2 v1.9.3
|
||||
kube-scheduler v1.9.2 v1.9.3
|
||||
kube-proxy v1.9.2 v1.9.3
|
||||
kube-dns 1.14.5 1.14.8
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.9.3
|
||||
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.9.3.
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
`),
|
||||
},
|
||||
{
|
||||
name: "kubedns to coredns",
|
||||
upgrades: []upgrade.Upgrade{
|
||||
{
|
||||
Description: "kubedns to coredns",
|
||||
Before: upgrade.ClusterState{
|
||||
KubeVersion: "v1.10.2",
|
||||
KubeletVersions: map[string]uint16{
|
||||
"v1.10.2": 1,
|
||||
},
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.7",
|
||||
EtcdVersion: "3.1.11",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.11.0",
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.0.6",
|
||||
EtcdVersion: "3.2.18",
|
||||
},
|
||||
},
|
||||
},
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.10.2 v1.11.0
|
||||
kubelet 1 x v1.19.2 v1.19.3
|
||||
|
||||
Upgrade to the latest kubedns to coredns:
|
||||
Upgrade to the latest version in the v1.19 series:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.10.2 v1.11.0
|
||||
kube-controller-manager v1.10.2 v1.11.0
|
||||
kube-scheduler v1.10.2 v1.11.0
|
||||
kube-proxy v1.10.2 v1.11.0
|
||||
CoreDNS 1.0.6
|
||||
kube-dns 1.14.7
|
||||
etcd 3.1.11 3.2.18
|
||||
kube-apiserver v1.19.2 v1.19.3
|
||||
kube-controller-manager v1.19.2 v1.19.3
|
||||
kube-scheduler v1.19.2 v1.19.3
|
||||
kube-proxy v1.19.2 v1.19.3
|
||||
CoreDNS 1.7.0 1.7.0
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.11.0
|
||||
kubeadm upgrade apply v1.19.3
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
`),
|
||||
},
|
||||
{
|
||||
name: "coredns",
|
||||
upgrades: []upgrade.Upgrade{
|
||||
{
|
||||
Description: "coredns",
|
||||
Before: upgrade.ClusterState{
|
||||
KubeVersion: "v1.10.2",
|
||||
KubeletVersions: map[string]uint16{
|
||||
"v1.10.2": 1,
|
||||
},
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.0.5",
|
||||
EtcdVersion: "3.1.11",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.11.0",
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.0.6",
|
||||
EtcdVersion: "3.2.18",
|
||||
},
|
||||
},
|
||||
},
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.10.2 v1.11.0
|
||||
|
||||
Upgrade to the latest coredns:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.10.2 v1.11.0
|
||||
kube-controller-manager v1.10.2 v1.11.0
|
||||
kube-scheduler v1.10.2 v1.11.0
|
||||
kube-proxy v1.10.2 v1.11.0
|
||||
CoreDNS 1.0.5 1.0.6
|
||||
etcd 3.1.11 3.2.18
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.11.0
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
`),
|
||||
},
|
||||
{
|
||||
name: "coredns to kubedns",
|
||||
upgrades: []upgrade.Upgrade{
|
||||
{
|
||||
Description: "coredns to kubedns",
|
||||
Before: upgrade.ClusterState{
|
||||
KubeVersion: "v1.10.2",
|
||||
KubeletVersions: map[string]uint16{
|
||||
"v1.10.2": 1,
|
||||
},
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: "1.0.6",
|
||||
EtcdVersion: "3.1.11",
|
||||
},
|
||||
After: upgrade.ClusterState{
|
||||
KubeVersion: "v1.11.0",
|
||||
KubeadmVersion: "v1.11.0",
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: "1.14.9",
|
||||
EtcdVersion: "3.2.18",
|
||||
},
|
||||
},
|
||||
},
|
||||
expectedBytes: []byte(`Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
|
||||
COMPONENT CURRENT TARGET
|
||||
kubelet 1 x v1.10.2 v1.11.0
|
||||
|
||||
Upgrade to the latest coredns to kubedns:
|
||||
|
||||
COMPONENT CURRENT TARGET
|
||||
kube-apiserver v1.10.2 v1.11.0
|
||||
kube-controller-manager v1.10.2 v1.11.0
|
||||
kube-scheduler v1.10.2 v1.11.0
|
||||
kube-proxy v1.10.2 v1.11.0
|
||||
CoreDNS 1.0.6
|
||||
kube-dns 1.14.9
|
||||
etcd 3.1.11 3.2.18
|
||||
|
||||
You can now apply the upgrade by executing the following command:
|
||||
|
||||
kubeadm upgrade apply v1.11.0
|
||||
Note: Before you can perform this upgrade, you have to update kubeadm to v1.19.3.
|
||||
|
||||
_____________________________________________________________________
|
||||
|
||||
|
||||
@ -302,8 +302,6 @@ const (
|
||||
HyperKube = "hyperkube"
|
||||
// CoreDNS defines variable used internally when referring to the CoreDNS component
|
||||
CoreDNS = "CoreDNS"
|
||||
// KubeDNS defines variable used internally when referring to the KubeDNS component
|
||||
KubeDNS = "kube-dns"
|
||||
// Kubelet defines variable used internally when referring to the Kubelet
|
||||
Kubelet = "kubelet"
|
||||
|
||||
@ -328,24 +326,6 @@ const (
|
||||
// CoreDNSImageName specifies the name of the image for CoreDNS add-on
|
||||
CoreDNSImageName = "coredns/coredns"
|
||||
|
||||
// KubeDNSConfigMap specifies in what ConfigMap in the kube-system namespace the kube-dns config should be stored
|
||||
KubeDNSConfigMap = "kube-dns"
|
||||
|
||||
// KubeDNSDeploymentName specifies the name of the Deployment for kube-dns add-on
|
||||
KubeDNSDeploymentName = "kube-dns"
|
||||
|
||||
// KubeDNSKubeDNSImageName specifies the name of the image for the kubedns container in the kube-dns add-on
|
||||
KubeDNSKubeDNSImageName = "k8s-dns-kube-dns"
|
||||
|
||||
// KubeDNSSidecarImageName specifies the name of the image for the sidecar container in the kube-dns add-on
|
||||
KubeDNSSidecarImageName = "k8s-dns-sidecar"
|
||||
|
||||
// KubeDNSDnsMasqNannyImageName specifies the name of the image for the dnsmasq container in the kube-dns add-on
|
||||
KubeDNSDnsMasqNannyImageName = "k8s-dns-dnsmasq-nanny"
|
||||
|
||||
// KubeDNSVersion is the version of kube-dns to be deployed if it is used
|
||||
KubeDNSVersion = "1.14.13"
|
||||
|
||||
// CoreDNSVersion is the version of CoreDNS to be deployed if it is used
|
||||
CoreDNSVersion = "v1.8.0"
|
||||
|
||||
@ -654,12 +634,10 @@ func GetAPIServerVirtualIP(svcSubnetList string, isDualStack bool) (net.IP, erro
|
||||
|
||||
// GetDNSVersion is a handy function that returns the DNS version by DNS type
|
||||
func GetDNSVersion(dnsType kubeadmapi.DNSAddOnType) string {
|
||||
switch dnsType {
|
||||
case kubeadmapi.KubeDNS:
|
||||
return KubeDNSVersion
|
||||
default:
|
||||
if dnsType == kubeadmapi.CoreDNS {
|
||||
return CoreDNSVersion
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// GetKubeletConfigMapName returns the right ConfigMap name for the right branch of k8s
|
||||
|
||||
@ -172,15 +172,11 @@ func TestEtcdSupportedVersion(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetKubeDNSVersion(t *testing.T) {
|
||||
func TestGetDNSVersion(t *testing.T) {
|
||||
var tests = []struct {
|
||||
dns kubeadmapi.DNSAddOnType
|
||||
expected string
|
||||
}{
|
||||
{
|
||||
dns: kubeadmapi.KubeDNS,
|
||||
expected: KubeDNSVersion,
|
||||
},
|
||||
{
|
||||
dns: kubeadmapi.CoreDNS,
|
||||
expected: CoreDNSVersion,
|
||||
|
||||
@ -44,9 +44,8 @@ func GetKubernetesImage(image string, cfg *kubeadmapi.ClusterConfiguration) stri
|
||||
return GetGenericImage(repoPrefix, image, kubernetesImageTag)
|
||||
}
|
||||
|
||||
// GetDNSImage generates and returns the image for the DNS, that can be CoreDNS or kube-dns.
|
||||
// Given that kube-dns uses 3 containers, an additional imageName parameter was added
|
||||
func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration, imageName string) string {
|
||||
// GetDNSImage generates and returns the image for CoreDNS.
|
||||
func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration) string {
|
||||
// DNS uses default image repository by default
|
||||
dnsImageRepository := cfg.ImageRepository
|
||||
// unless an override is specified
|
||||
@ -60,7 +59,7 @@ func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration, imageName string) string
|
||||
if cfg.DNS.ImageTag != "" {
|
||||
dnsImageTag = cfg.DNS.ImageTag
|
||||
}
|
||||
return GetGenericImage(dnsImageRepository, imageName, dnsImageTag)
|
||||
return GetGenericImage(dnsImageRepository, constants.CoreDNSImageName, dnsImageTag)
|
||||
}
|
||||
|
||||
// GetEtcdImage generates and returns the image for etcd
|
||||
@ -112,11 +111,7 @@ func GetControlPlaneImages(cfg *kubeadmapi.ClusterConfiguration) []string {
|
||||
|
||||
// Append the appropriate DNS images
|
||||
if cfg.DNS.Type == kubeadmapi.CoreDNS {
|
||||
imgs = append(imgs, GetDNSImage(cfg, constants.CoreDNSImageName))
|
||||
} else {
|
||||
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSKubeDNSImageName))
|
||||
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSSidecarImageName))
|
||||
imgs = append(imgs, GetDNSImage(cfg, constants.KubeDNSDnsMasqNannyImageName))
|
||||
imgs = append(imgs, GetDNSImage(cfg))
|
||||
}
|
||||
|
||||
return imgs
|
||||
|
||||
@ -224,33 +224,6 @@ func TestGetAllImages(t *testing.T) {
|
||||
},
|
||||
expect: constants.CoreDNSImageName,
|
||||
},
|
||||
{
|
||||
name: "main kube-dns image is returned",
|
||||
cfg: &kubeadmapi.ClusterConfiguration{
|
||||
DNS: kubeadmapi.DNS{
|
||||
Type: kubeadmapi.KubeDNS,
|
||||
},
|
||||
},
|
||||
expect: constants.KubeDNSKubeDNSImageName,
|
||||
},
|
||||
{
|
||||
name: "kube-dns sidecar image is returned",
|
||||
cfg: &kubeadmapi.ClusterConfiguration{
|
||||
DNS: kubeadmapi.DNS{
|
||||
Type: kubeadmapi.KubeDNS,
|
||||
},
|
||||
},
|
||||
expect: constants.KubeDNSSidecarImageName,
|
||||
},
|
||||
{
|
||||
name: "kube-dns dnsmasq-nanny image is returned",
|
||||
cfg: &kubeadmapi.ClusterConfiguration{
|
||||
DNS: kubeadmapi.DNS{
|
||||
Type: kubeadmapi.KubeDNS,
|
||||
},
|
||||
},
|
||||
expect: constants.KubeDNSDnsMasqNannyImageName,
|
||||
},
|
||||
}
|
||||
for _, tc := range testcases {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
|
||||
@ -18,12 +18,9 @@ package dns
|
||||
|
||||
import (
|
||||
"context"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"net"
|
||||
"strings"
|
||||
|
||||
"github.com/caddyserver/caddy/caddyfile"
|
||||
"github.com/coredns/corefile-migration/migration"
|
||||
"github.com/pkg/errors"
|
||||
apps "k8s.io/api/apps/v1"
|
||||
@ -42,17 +39,11 @@ import (
|
||||
"k8s.io/kubernetes/cmd/kubeadm/app/images"
|
||||
kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
|
||||
"k8s.io/kubernetes/cmd/kubeadm/app/util/apiclient"
|
||||
utilsnet "k8s.io/utils/net"
|
||||
)
|
||||
|
||||
const (
|
||||
// KubeDNSServiceAccountName describes the name of the ServiceAccount for the kube-dns addon
|
||||
KubeDNSServiceAccountName = "kube-dns"
|
||||
kubeDNSStubDomain = "stubDomains"
|
||||
kubeDNSUpstreamNameservers = "upstreamNameservers"
|
||||
unableToDecodeCoreDNS = "unable to decode CoreDNS"
|
||||
coreDNSReplicas = 2
|
||||
kubeDNSReplicas = 1
|
||||
unableToDecodeCoreDNS = "unable to decode CoreDNS"
|
||||
coreDNSReplicas = 2
|
||||
)
|
||||
|
||||
// DeployedDNSAddon returns the type of DNS addon currently deployed
|
||||
@ -67,11 +58,7 @@ func DeployedDNSAddon(client clientset.Interface) (kubeadmapi.DNSAddOnType, stri
|
||||
case 0:
|
||||
return "", "", nil
|
||||
case 1:
|
||||
addonName := deployments.Items[0].Name
|
||||
addonType := kubeadmapi.CoreDNS
|
||||
if addonName == kubeadmconstants.KubeDNSDeploymentName {
|
||||
addonType = kubeadmapi.KubeDNS
|
||||
}
|
||||
addonImage := deployments.Items[0].Spec.Template.Spec.Containers[0].Image
|
||||
addonImageParts := strings.Split(addonImage, ":")
|
||||
addonVersion := addonImageParts[len(addonImageParts)-1]
|
||||
@ -98,101 +85,13 @@ func deployedDNSReplicas(client clientset.Interface, replicas int32) (*int32, er
|
||||
}
|
||||
}
|
||||
|
||||
// EnsureDNSAddon creates the kube-dns or CoreDNS addon
|
||||
// EnsureDNSAddon creates the CoreDNS addon
|
||||
func EnsureDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interface) error {
|
||||
if cfg.DNS.Type == kubeadmapi.CoreDNS {
|
||||
replicas, err := deployedDNSReplicas(client, coreDNSReplicas)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return coreDNSAddon(cfg, client, replicas)
|
||||
}
|
||||
replicas, err := deployedDNSReplicas(client, kubeDNSReplicas)
|
||||
replicas, err := deployedDNSReplicas(client, coreDNSReplicas)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return kubeDNSAddon(cfg, client, replicas)
|
||||
}
|
||||
|
||||
func kubeDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interface, replicas *int32) error {
|
||||
if err := CreateServiceAccount(client); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
dnsip, err := kubeadmconstants.GetDNSIP(cfg.Networking.ServiceSubnet, features.Enabled(cfg.FeatureGates, features.IPv6DualStack))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var dnsBindAddr, dnsProbeAddr string
|
||||
if utilsnet.IsIPv6(dnsip) {
|
||||
dnsBindAddr = "::1"
|
||||
dnsProbeAddr = "[" + dnsBindAddr + "]"
|
||||
} else {
|
||||
dnsBindAddr = "127.0.0.1"
|
||||
dnsProbeAddr = dnsBindAddr
|
||||
}
|
||||
|
||||
dnsDeploymentBytes, err := kubeadmutil.ParseTemplate(KubeDNSDeployment,
|
||||
struct {
|
||||
DeploymentName, KubeDNSImage, DNSMasqImage, SidecarImage, DNSBindAddr, DNSProbeAddr, DNSDomain, OldControlPlaneTaintKey, ControlPlaneTaintKey string
|
||||
Replicas *int32
|
||||
}{
|
||||
DeploymentName: kubeadmconstants.KubeDNSDeploymentName,
|
||||
KubeDNSImage: images.GetDNSImage(cfg, kubeadmconstants.KubeDNSKubeDNSImageName),
|
||||
DNSMasqImage: images.GetDNSImage(cfg, kubeadmconstants.KubeDNSDnsMasqNannyImageName),
|
||||
SidecarImage: images.GetDNSImage(cfg, kubeadmconstants.KubeDNSSidecarImageName),
|
||||
DNSBindAddr: dnsBindAddr,
|
||||
DNSProbeAddr: dnsProbeAddr,
|
||||
DNSDomain: cfg.Networking.DNSDomain,
|
||||
// TODO: https://github.com/kubernetes/kubeadm/issues/2200
|
||||
OldControlPlaneTaintKey: kubeadmconstants.LabelNodeRoleOldControlPlane,
|
||||
ControlPlaneTaintKey: kubeadmconstants.LabelNodeRoleControlPlane,
|
||||
Replicas: replicas,
|
||||
})
|
||||
if err != nil {
|
||||
return errors.Wrap(err, "error when parsing kube-dns deployment template")
|
||||
}
|
||||
|
||||
dnsServiceBytes, err := kubeadmutil.ParseTemplate(KubeDNSService, struct{ DNSIP string }{
|
||||
DNSIP: dnsip.String(),
|
||||
})
|
||||
if err != nil {
|
||||
return errors.Wrap(err, "error when parsing kube-proxy configmap template")
|
||||
}
|
||||
|
||||
if err := createKubeDNSAddon(dnsDeploymentBytes, dnsServiceBytes, client); err != nil {
|
||||
return err
|
||||
}
|
||||
fmt.Println("[addons] WARNING: kube-dns is deprecated and will not be supported in a future version")
|
||||
fmt.Println("[addons] Applied essential addon: kube-dns")
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateServiceAccount creates the necessary serviceaccounts that kubeadm uses/might use, if they don't already exist.
|
||||
func CreateServiceAccount(client clientset.Interface) error {
|
||||
|
||||
return apiclient.CreateOrUpdateServiceAccount(client, &v1.ServiceAccount{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: KubeDNSServiceAccountName,
|
||||
Namespace: metav1.NamespaceSystem,
|
||||
},
|
||||
})
|
||||
}
|
||||
|
||||
func createKubeDNSAddon(deploymentBytes, serviceBytes []byte, client clientset.Interface) error {
|
||||
kubednsDeployment := &apps.Deployment{}
|
||||
if err := kuberuntime.DecodeInto(clientsetscheme.Codecs.UniversalDecoder(), deploymentBytes, kubednsDeployment); err != nil {
|
||||
return errors.Wrap(err, "unable to decode kube-dns deployment")
|
||||
}
|
||||
|
||||
// Create the Deployment for kube-dns or update it in case it already exists
|
||||
if err := apiclient.CreateOrUpdateDeployment(client, kubednsDeployment); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
kubednsService := &v1.Service{}
|
||||
return createDNSService(kubednsService, serviceBytes, client)
|
||||
return coreDNSAddon(cfg, client, replicas)
|
||||
}
|
||||
|
||||
func coreDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interface, replicas *int32) error {
|
||||
@ -202,7 +101,7 @@ func coreDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interfa
|
||||
Replicas *int32
|
||||
}{
|
||||
DeploymentName: kubeadmconstants.CoreDNSDeploymentName,
|
||||
Image: images.GetDNSImage(cfg, kubeadmconstants.CoreDNSImageName),
|
||||
Image: images.GetDNSImage(cfg),
|
||||
// TODO: https://github.com/kubernetes/kubeadm/issues/2200
|
||||
OldControlPlaneTaintKey: kubeadmconstants.LabelNodeRoleOldControlPlane,
|
||||
ControlPlaneTaintKey: kubeadmconstants.LabelNodeRoleControlPlane,
|
||||
@ -212,28 +111,9 @@ func coreDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interfa
|
||||
return errors.Wrap(err, "error when parsing CoreDNS deployment template")
|
||||
}
|
||||
|
||||
// Get the kube-dns ConfigMap for translation to equivalent CoreDNS Config.
|
||||
kubeDNSConfigMap, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(context.TODO(), kubeadmconstants.KubeDNSConfigMap, metav1.GetOptions{})
|
||||
if err != nil && !apierrors.IsNotFound(err) {
|
||||
return err
|
||||
}
|
||||
|
||||
stubDomain, err := translateStubDomainOfKubeDNSToForwardCoreDNS(kubeDNSStubDomain, kubeDNSConfigMap)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
upstreamNameserver, err := translateUpstreamNameServerOfKubeDNSToUpstreamForwardCoreDNS(kubeDNSUpstreamNameservers, kubeDNSConfigMap)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
coreDNSDomain := cfg.Networking.DNSDomain
|
||||
|
||||
// Get the config file for CoreDNS
|
||||
coreDNSConfigMapBytes, err := kubeadmutil.ParseTemplate(CoreDNSConfigMap, struct{ DNSDomain, UpstreamNameserver, StubDomain string }{
|
||||
DNSDomain: coreDNSDomain,
|
||||
UpstreamNameserver: upstreamNameserver,
|
||||
StubDomain: stubDomain,
|
||||
DNSDomain: cfg.Networking.DNSDomain,
|
||||
})
|
||||
if err != nil {
|
||||
return errors.Wrap(err, "error when parsing CoreDNS configMap template")
|
||||
@ -244,7 +124,7 @@ func coreDNSAddon(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interfa
|
||||
return err
|
||||
}
|
||||
|
||||
coreDNSServiceBytes, err := kubeadmutil.ParseTemplate(KubeDNSService, struct{ DNSIP string }{
|
||||
coreDNSServiceBytes, err := kubeadmutil.ParseTemplate(CoreDNSService, struct{ DNSIP string }{
|
||||
DNSIP: dnsip.String(),
|
||||
})
|
||||
|
||||
@ -473,116 +353,3 @@ func setCorefile(client clientset.Interface, coreDNSCorefileName string) error {
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// translateStubDomainOfKubeDNSToForwardCoreDNS translates StubDomain Data in kube-dns ConfigMap
|
||||
// in the form of Proxy for the CoreDNS Corefile.
|
||||
func translateStubDomainOfKubeDNSToForwardCoreDNS(dataField string, kubeDNSConfigMap *v1.ConfigMap) (string, error) {
|
||||
if kubeDNSConfigMap == nil {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
if proxy, ok := kubeDNSConfigMap.Data[dataField]; ok {
|
||||
stubDomainData := make(map[string][]string)
|
||||
err := json.Unmarshal([]byte(proxy), &stubDomainData)
|
||||
if err != nil {
|
||||
return "", errors.Wrap(err, "failed to parse JSON from 'kube-dns ConfigMap")
|
||||
}
|
||||
|
||||
var proxyStanza []interface{}
|
||||
for domain, proxyHosts := range stubDomainData {
|
||||
proxyIP, err := omitHostnameInTranslation(proxyHosts)
|
||||
if err != nil {
|
||||
return "", errors.Wrap(err, "invalid format to parse for proxy")
|
||||
}
|
||||
if len(proxyIP) == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
pStanza := map[string]interface{}{}
|
||||
pStanza["keys"] = []string{domain + ":53"}
|
||||
pStanza["body"] = [][]string{
|
||||
{"errors"},
|
||||
{"cache", "30"},
|
||||
{"loop"},
|
||||
append([]string{"forward", "."}, proxyIP...),
|
||||
}
|
||||
proxyStanza = append(proxyStanza, pStanza)
|
||||
}
|
||||
stanzasBytes, err := json.Marshal(proxyStanza)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
corefileStanza, err := caddyfile.FromJSON(stanzasBytes)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return prepCorefileFormat(string(corefileStanza), 4), nil
|
||||
}
|
||||
return "", nil
|
||||
}
|
||||
|
||||
// translateUpstreamNameServerOfKubeDNSToUpstreamForwardCoreDNS translates UpstreamNameServer Data in kube-dns ConfigMap
|
||||
// in the form of Proxy for the CoreDNS Corefile.
|
||||
func translateUpstreamNameServerOfKubeDNSToUpstreamForwardCoreDNS(dataField string, kubeDNSConfigMap *v1.ConfigMap) (string, error) {
|
||||
if kubeDNSConfigMap == nil {
|
||||
return "/etc/resolv.conf", nil
|
||||
}
|
||||
|
||||
if upstreamValues, ok := kubeDNSConfigMap.Data[dataField]; ok {
|
||||
var upstreamProxyValues []string
|
||||
|
||||
err := json.Unmarshal([]byte(upstreamValues), &upstreamProxyValues)
|
||||
if err != nil {
|
||||
return "", errors.Wrap(err, "failed to parse JSON from 'kube-dns ConfigMap")
|
||||
}
|
||||
|
||||
upstreamProxyValues, err = omitHostnameInTranslation(upstreamProxyValues)
|
||||
if err != nil {
|
||||
return "", errors.Wrap(err, "invalid format to parse for proxy")
|
||||
}
|
||||
|
||||
coreDNSProxyStanzaList := strings.Join(upstreamProxyValues, " ")
|
||||
return coreDNSProxyStanzaList, nil
|
||||
}
|
||||
return "/etc/resolv.conf", nil
|
||||
}
|
||||
|
||||
// prepCorefileFormat indents the output of the Corefile caddytext and replaces tabs with spaces
|
||||
// to neatly format the configmap, making it readable.
|
||||
func prepCorefileFormat(s string, indentation int) string {
|
||||
var r []string
|
||||
if s == "" {
|
||||
return ""
|
||||
}
|
||||
for _, line := range strings.Split(s, "\n") {
|
||||
indented := strings.Repeat(" ", indentation) + line
|
||||
r = append(r, indented)
|
||||
}
|
||||
corefile := strings.Join(r, "\n")
|
||||
return "\n" + strings.Replace(corefile, "\t", " ", -1)
|
||||
}
|
||||
|
||||
// omitHostnameInTranslation checks if the data extracted from the kube-dns ConfigMap contains a valid
|
||||
// IP address. Hostname to nameservers is not supported on CoreDNS and will
|
||||
// skip that particular instance, if there is any hostname present.
|
||||
func omitHostnameInTranslation(forwardIPs []string) ([]string, error) {
|
||||
index := 0
|
||||
for _, value := range forwardIPs {
|
||||
proxyHost, _, err := kubeadmutil.ParseHostPort(value)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
parseIP := net.ParseIP(proxyHost)
|
||||
if parseIP == nil {
|
||||
klog.Warningf("your kube-dns configuration contains a hostname %v. It will be omitted in the translation to CoreDNS as hostnames are unsupported", proxyHost)
|
||||
} else {
|
||||
forwardIPs[index] = value
|
||||
index++
|
||||
}
|
||||
}
|
||||
forwardIPs = forwardIPs[:index]
|
||||
|
||||
return forwardIPs, nil
|
||||
}
|
||||
|
||||
@ -23,74 +23,14 @@ import (
|
||||
|
||||
apps "k8s.io/api/apps/v1"
|
||||
v1 "k8s.io/api/core/v1"
|
||||
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/runtime"
|
||||
"k8s.io/apimachinery/pkg/runtime/schema"
|
||||
clientsetfake "k8s.io/client-go/kubernetes/fake"
|
||||
clientsetscheme "k8s.io/client-go/kubernetes/scheme"
|
||||
core "k8s.io/client-go/testing"
|
||||
kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
|
||||
kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
|
||||
)
|
||||
|
||||
func TestCreateServiceAccount(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
createErr error
|
||||
expectErr bool
|
||||
}{
|
||||
{
|
||||
"error-free case",
|
||||
nil,
|
||||
false,
|
||||
},
|
||||
{
|
||||
"duplication errors should be ignored",
|
||||
apierrors.NewAlreadyExists(schema.GroupResource{}, ""),
|
||||
false,
|
||||
},
|
||||
{
|
||||
"unexpected errors should be returned",
|
||||
apierrors.NewUnauthorized(""),
|
||||
true,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tc := range tests {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
client := clientsetfake.NewSimpleClientset()
|
||||
if tc.createErr != nil {
|
||||
client.PrependReactor("create", "serviceaccounts", func(action core.Action) (bool, runtime.Object, error) {
|
||||
return true, nil, tc.createErr
|
||||
})
|
||||
}
|
||||
|
||||
err := CreateServiceAccount(client)
|
||||
if tc.expectErr {
|
||||
if err == nil {
|
||||
t.Errorf("CreateServiceAccounts(%s) wanted err, got nil", tc.name)
|
||||
}
|
||||
return
|
||||
} else if !tc.expectErr && err != nil {
|
||||
t.Errorf("CreateServiceAccounts(%s) returned unexpected err: %v", tc.name, err)
|
||||
}
|
||||
|
||||
wantResourcesCreated := 1
|
||||
if len(client.Actions()) != wantResourcesCreated {
|
||||
t.Errorf("CreateServiceAccounts(%s) should have made %d actions, but made %d", tc.name, wantResourcesCreated, len(client.Actions()))
|
||||
}
|
||||
|
||||
for _, action := range client.Actions() {
|
||||
if action.GetVerb() != "create" || action.GetResource().Resource != "serviceaccounts" {
|
||||
t.Errorf("CreateServiceAccounts(%s) called [%v %v], but wanted [create serviceaccounts]",
|
||||
tc.name, action.GetVerb(), action.GetResource().Resource)
|
||||
}
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestCompileManifests(t *testing.T) {
|
||||
replicas := int32(coreDNSReplicas)
|
||||
var tests = []struct {
|
||||
@ -98,32 +38,6 @@ func TestCompileManifests(t *testing.T) {
|
||||
manifest string
|
||||
data interface{}
|
||||
}{
|
||||
{
|
||||
name: "KubeDNSDeployment manifest",
|
||||
manifest: KubeDNSDeployment,
|
||||
data: struct {
|
||||
DeploymentName, KubeDNSImage, DNSMasqImage, SidecarImage, DNSBindAddr, DNSProbeAddr, DNSDomain, OldControlPlaneTaintKey, ControlPlaneTaintKey string
|
||||
Replicas *int32
|
||||
}{
|
||||
DeploymentName: "foo",
|
||||
KubeDNSImage: "foo",
|
||||
DNSMasqImage: "foo",
|
||||
SidecarImage: "foo",
|
||||
DNSBindAddr: "foo",
|
||||
DNSProbeAddr: "foo",
|
||||
DNSDomain: "foo",
|
||||
OldControlPlaneTaintKey: "foo",
|
||||
ControlPlaneTaintKey: "foo",
|
||||
Replicas: &replicas,
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "KubeDNSService manifest",
|
||||
manifest: KubeDNSService,
|
||||
data: struct{ DNSIP string }{
|
||||
DNSIP: "foo",
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "CoreDNSDeployment manifest",
|
||||
manifest: CoreDNSDeployment,
|
||||
@ -141,10 +55,8 @@ func TestCompileManifests(t *testing.T) {
|
||||
{
|
||||
name: "CoreDNSConfigMap manifest",
|
||||
manifest: CoreDNSConfigMap,
|
||||
data: struct{ DNSDomain, UpstreamNameserver, StubDomain string }{
|
||||
DNSDomain: "foo",
|
||||
UpstreamNameserver: "foo",
|
||||
StubDomain: "foo",
|
||||
data: struct{ DNSDomain string }{
|
||||
DNSDomain: "foo",
|
||||
},
|
||||
},
|
||||
}
|
||||
@ -207,296 +119,6 @@ func TestGetDNSIP(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestTranslateStubDomainKubeDNSToCoreDNS(t *testing.T) {
|
||||
testCases := []struct {
|
||||
name string
|
||||
configMap *v1.ConfigMap
|
||||
expectOne string
|
||||
expectTwo string
|
||||
}{
|
||||
{
|
||||
name: "valid call with multiple IPs",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"stubDomains": `{"foo.com" : ["1.2.3.4:5300","3.3.3.3"], "my.cluster.local" : ["2.3.4.5"]}`,
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: `
|
||||
foo.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300 3.3.3.3
|
||||
}
|
||||
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}`,
|
||||
expectTwo: `
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}
|
||||
|
||||
foo.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300 3.3.3.3
|
||||
}`,
|
||||
},
|
||||
{
|
||||
name: "empty call",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubedns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: "",
|
||||
},
|
||||
{
|
||||
name: "valid call",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"stubDomains": `{"foo.com" : ["1.2.3.4:5300"], "my.cluster.local" : ["2.3.4.5"]}`,
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: `
|
||||
foo.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300
|
||||
}
|
||||
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}`,
|
||||
expectTwo: `
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}
|
||||
|
||||
foo.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300
|
||||
}`,
|
||||
},
|
||||
{
|
||||
name: "If Hostname present: Omit Hostname",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"stubDomains": `{"bar.com" : ["1.2.3.4:5300","service.consul"], "my.cluster.local" : ["2.3.4.5"], "foo.com" : ["service.consul"]}`,
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: `
|
||||
bar.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300
|
||||
}
|
||||
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}`,
|
||||
expectTwo: `
|
||||
my.cluster.local:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 2.3.4.5
|
||||
}
|
||||
|
||||
bar.com:53 {
|
||||
errors
|
||||
cache 30
|
||||
loop
|
||||
forward . 1.2.3.4:5300
|
||||
}`,
|
||||
},
|
||||
{
|
||||
name: "All hostname: return empty",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"stubDomains": `{"foo.com" : ["service.consul"], "my.cluster.local" : ["ns.foo.com"]}`,
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: "",
|
||||
expectTwo: "",
|
||||
},
|
||||
{
|
||||
name: "missing stubDomains",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expectOne: "",
|
||||
},
|
||||
}
|
||||
for _, testCase := range testCases {
|
||||
t.Run(testCase.name, func(t *testing.T) {
|
||||
out, err := translateStubDomainOfKubeDNSToForwardCoreDNS(kubeDNSStubDomain, testCase.configMap)
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
}
|
||||
if !strings.EqualFold(out, testCase.expectOne) && !strings.EqualFold(out, testCase.expectTwo) {
|
||||
t.Errorf("expected to find %q or %q in output: %q", testCase.expectOne, testCase.expectTwo, out)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestTranslateUpstreamKubeDNSToCoreDNS(t *testing.T) {
|
||||
testCases := []struct {
|
||||
name string
|
||||
configMap *v1.ConfigMap
|
||||
expect string
|
||||
}{
|
||||
{
|
||||
name: "expect resolv.conf",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
},
|
||||
|
||||
expect: "/etc/resolv.conf",
|
||||
},
|
||||
{
|
||||
name: "expect list of Name Server IP addresses",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubedns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"stubDomains": ` {"foo.com" : ["1.2.3.4:5300"], "my.cluster.local" : ["2.3.4.5"]}`,
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4", "4.4.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expect: "8.8.8.8 8.8.4.4 4.4.4.4",
|
||||
},
|
||||
{
|
||||
name: "no stubDomains: expect list of Name Server IP addresses",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubedns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"upstreamNameservers": `["8.8.8.8", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expect: "8.8.8.8 8.8.4.4",
|
||||
},
|
||||
{
|
||||
name: "Hostname present: expect NameServer to omit the hostname",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubedns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"upstreamNameservers": `["service.consul", "ns.foo.com", "8.8.4.4", "ns.moo.com", "ns.bar.com"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expect: "8.8.4.4",
|
||||
},
|
||||
{
|
||||
name: "All hostnames: return empty",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kube-dns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"upstreamNameservers": `["service.consul", "ns.foo.com"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expect: "",
|
||||
},
|
||||
{
|
||||
name: "IPv6: expect list of Name Server IP addresses",
|
||||
configMap: &v1.ConfigMap{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubedns",
|
||||
Namespace: "kube-system",
|
||||
},
|
||||
Data: map[string]string{
|
||||
"upstreamNameservers": `["[2003::1]:53", "8.8.4.4"]`,
|
||||
},
|
||||
},
|
||||
|
||||
expect: "[2003::1]:53 8.8.4.4",
|
||||
},
|
||||
}
|
||||
for _, testCase := range testCases {
|
||||
t.Run(testCase.name, func(t *testing.T) {
|
||||
out, err := translateUpstreamNameServerOfKubeDNSToUpstreamForwardCoreDNS(kubeDNSUpstreamNameservers, testCase.configMap)
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
}
|
||||
if !strings.EqualFold(out, testCase.expect) {
|
||||
t.Errorf("expected to find %q in output: %q", testCase.expect, out)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestDeploymentsHaveSystemClusterCriticalPriorityClassName(t *testing.T) {
|
||||
replicas := int32(coreDNSReplicas)
|
||||
testCases := []struct {
|
||||
@ -504,25 +126,6 @@ func TestDeploymentsHaveSystemClusterCriticalPriorityClassName(t *testing.T) {
|
||||
manifest string
|
||||
data interface{}
|
||||
}{
|
||||
{
|
||||
name: "KubeDNSDeployment",
|
||||
manifest: KubeDNSDeployment,
|
||||
data: struct {
|
||||
DeploymentName, KubeDNSImage, DNSMasqImage, SidecarImage, DNSBindAddr, DNSProbeAddr, DNSDomain, OldControlPlaneTaintKey, ControlPlaneTaintKey string
|
||||
Replicas *int32
|
||||
}{
|
||||
DeploymentName: "foo",
|
||||
KubeDNSImage: "foo",
|
||||
DNSMasqImage: "foo",
|
||||
SidecarImage: "foo",
|
||||
DNSBindAddr: "foo",
|
||||
DNSProbeAddr: "foo",
|
||||
DNSDomain: "foo",
|
||||
OldControlPlaneTaintKey: "foo",
|
||||
ControlPlaneTaintKey: "foo",
|
||||
Replicas: &replicas,
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "CoreDNSDeployment",
|
||||
manifest: CoreDNSDeployment,
|
||||
|
||||
@ -17,174 +17,15 @@ limitations under the License.
|
||||
package dns
|
||||
|
||||
const (
|
||||
// KubeDNSDeployment is the kube-dns Deployment manifest for the kube-dns manifest for v1.7+
|
||||
KubeDNSDeployment = `
|
||||
apiVersion: apps/v1
|
||||
kind: Deployment
|
||||
metadata:
|
||||
name: {{ .DeploymentName }}
|
||||
namespace: kube-system
|
||||
labels:
|
||||
k8s-app: kube-dns
|
||||
spec:
|
||||
replicas: {{ .Replicas }}
|
||||
strategy:
|
||||
rollingUpdate:
|
||||
maxSurge: 10%
|
||||
maxUnavailable: 0
|
||||
selector:
|
||||
matchLabels:
|
||||
k8s-app: kube-dns
|
||||
template:
|
||||
metadata:
|
||||
labels:
|
||||
k8s-app: kube-dns
|
||||
spec:
|
||||
priorityClassName: system-cluster-critical
|
||||
volumes:
|
||||
- name: kube-dns-config
|
||||
configMap:
|
||||
name: kube-dns
|
||||
optional: true
|
||||
containers:
|
||||
- name: kubedns
|
||||
image: {{ .KubeDNSImage }}
|
||||
imagePullPolicy: IfNotPresent
|
||||
resources:
|
||||
# TODO: Set memory limits when we've profiled the container for large
|
||||
# clusters, then set request = limit to keep this container in
|
||||
# guaranteed class. Currently, this container falls into the
|
||||
# "burstable" category so the kubelet doesn't backoff from restarting it.
|
||||
limits:
|
||||
memory: 170Mi
|
||||
requests:
|
||||
cpu: 100m
|
||||
memory: 70Mi
|
||||
livenessProbe:
|
||||
httpGet:
|
||||
path: /healthcheck/kubedns
|
||||
port: 10054
|
||||
scheme: HTTP
|
||||
initialDelaySeconds: 60
|
||||
timeoutSeconds: 5
|
||||
successThreshold: 1
|
||||
failureThreshold: 5
|
||||
readinessProbe:
|
||||
httpGet:
|
||||
path: /readiness
|
||||
port: 8081
|
||||
scheme: HTTP
|
||||
# we poll on pod startup for the Kubernetes control-plane service and
|
||||
# only setup the /readiness HTTP server once that's available.
|
||||
initialDelaySeconds: 3
|
||||
timeoutSeconds: 5
|
||||
args:
|
||||
- --domain={{ .DNSDomain }}.
|
||||
- --dns-port=10053
|
||||
- --config-dir=/kube-dns-config
|
||||
- --v=2
|
||||
env:
|
||||
- name: PROMETHEUS_PORT
|
||||
value: "10055"
|
||||
ports:
|
||||
- containerPort: 10053
|
||||
name: dns-local
|
||||
protocol: UDP
|
||||
- containerPort: 10053
|
||||
name: dns-tcp-local
|
||||
protocol: TCP
|
||||
- containerPort: 10055
|
||||
name: metrics
|
||||
protocol: TCP
|
||||
volumeMounts:
|
||||
- name: kube-dns-config
|
||||
mountPath: /kube-dns-config
|
||||
- name: dnsmasq
|
||||
image: {{ .DNSMasqImage }}
|
||||
imagePullPolicy: IfNotPresent
|
||||
livenessProbe:
|
||||
httpGet:
|
||||
path: /healthcheck/dnsmasq
|
||||
port: 10054
|
||||
scheme: HTTP
|
||||
initialDelaySeconds: 60
|
||||
timeoutSeconds: 5
|
||||
successThreshold: 1
|
||||
failureThreshold: 5
|
||||
args:
|
||||
- -v=2
|
||||
- -logtostderr
|
||||
- -configDir=/etc/k8s/dns/dnsmasq-nanny
|
||||
- -restartDnsmasq=true
|
||||
- --
|
||||
- -k
|
||||
- --cache-size=1000
|
||||
- --no-negcache
|
||||
- --dns-loop-detect
|
||||
- --log-facility=-
|
||||
- --server=/{{ .DNSDomain }}/{{ .DNSBindAddr }}#10053
|
||||
- --server=/in-addr.arpa/{{ .DNSBindAddr }}#10053
|
||||
- --server=/ip6.arpa/{{ .DNSBindAddr }}#10053
|
||||
ports:
|
||||
- containerPort: 53
|
||||
name: dns
|
||||
protocol: UDP
|
||||
- containerPort: 53
|
||||
name: dns-tcp
|
||||
protocol: TCP
|
||||
# see: https://github.com/kubernetes/kubernetes/issues/29055 for details
|
||||
resources:
|
||||
requests:
|
||||
cpu: 150m
|
||||
memory: 20Mi
|
||||
volumeMounts:
|
||||
- name: kube-dns-config
|
||||
mountPath: /etc/k8s/dns/dnsmasq-nanny
|
||||
- name: sidecar
|
||||
image: {{ .SidecarImage }}
|
||||
imagePullPolicy: IfNotPresent
|
||||
livenessProbe:
|
||||
httpGet:
|
||||
path: /metrics
|
||||
port: 10054
|
||||
scheme: HTTP
|
||||
initialDelaySeconds: 60
|
||||
timeoutSeconds: 5
|
||||
successThreshold: 1
|
||||
failureThreshold: 5
|
||||
args:
|
||||
- --v=2
|
||||
- --logtostderr
|
||||
- --probe=kubedns,{{ .DNSProbeAddr }}:10053,kubernetes.default.svc.{{ .DNSDomain }},5,SRV
|
||||
- --probe=dnsmasq,{{ .DNSProbeAddr }}:53,kubernetes.default.svc.{{ .DNSDomain }},5,SRV
|
||||
ports:
|
||||
- containerPort: 10054
|
||||
name: metrics
|
||||
protocol: TCP
|
||||
resources:
|
||||
requests:
|
||||
memory: 20Mi
|
||||
cpu: 10m
|
||||
dnsPolicy: Default # Don't use cluster DNS.
|
||||
serviceAccountName: kube-dns
|
||||
tolerations:
|
||||
- key: CriticalAddonsOnly
|
||||
operator: Exists
|
||||
- key: {{ .OldControlPlaneTaintKey }}
|
||||
effect: NoSchedule
|
||||
- key: {{ .ControlPlaneTaintKey }}
|
||||
effect: NoSchedule
|
||||
`
|
||||
|
||||
// KubeDNSService is the kube-dns Service manifest
|
||||
KubeDNSService = `
|
||||
// CoreDNSService is the CoreDNS Service manifest
|
||||
CoreDNSService = `
|
||||
apiVersion: v1
|
||||
kind: Service
|
||||
metadata:
|
||||
labels:
|
||||
k8s-app: kube-dns
|
||||
kubernetes.io/cluster-service: "true"
|
||||
kubernetes.io/name: "KubeDNS"
|
||||
kubernetes.io/name: "CoreDNS"
|
||||
name: kube-dns
|
||||
namespace: kube-system
|
||||
annotations:
|
||||
@ -324,14 +165,14 @@ data:
|
||||
ttl 30
|
||||
}
|
||||
prometheus :9153
|
||||
forward . {{ .UpstreamNameserver }} {
|
||||
forward . /etc/resolv.conf {
|
||||
max_concurrent 1000
|
||||
}
|
||||
cache 30
|
||||
loop
|
||||
reload
|
||||
loadbalance
|
||||
}{{ .StubDomain }}
|
||||
}
|
||||
`
|
||||
// CoreDNSClusterRole is the CoreDNS ClusterRole manifest
|
||||
CoreDNSClusterRole = `
|
||||
|
||||
@ -89,7 +89,6 @@ func getEtcdVersion(v *versionutil.Version) string {
|
||||
}
|
||||
|
||||
const fakeCurrentCoreDNSVersion = "1.0.6"
|
||||
const fakeCurrentKubeDNSVersion = "1.14.7"
|
||||
|
||||
func TestGetAvailableUpgrades(t *testing.T) {
|
||||
|
||||
@ -666,78 +665,6 @@ func TestGetAvailableUpgrades(t *testing.T) {
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "kubedns to coredns",
|
||||
vg: &fakeVersionGetter{
|
||||
clusterVersion: v1Y2.String(),
|
||||
kubeletVersion: v1Y2.String(), // the kubelet are on the same version as the control plane
|
||||
kubeadmVersion: v1Z0.String(),
|
||||
|
||||
stablePatchVersion: v1Z0.String(),
|
||||
stableVersion: v1Z0.String(),
|
||||
},
|
||||
beforeDNSType: kubeadmapi.KubeDNS,
|
||||
beforeDNSVersion: fakeCurrentKubeDNSVersion,
|
||||
dnsType: kubeadmapi.CoreDNS,
|
||||
expectedUpgrades: []Upgrade{
|
||||
{
|
||||
Description: fmt.Sprintf("version in the v%d.%d series", v1Y0.Major(), v1Y0.Minor()),
|
||||
Before: ClusterState{
|
||||
KubeVersion: v1Y2.String(),
|
||||
KubeletVersions: map[string]uint16{
|
||||
v1Y2.String(): 1,
|
||||
},
|
||||
KubeadmVersion: v1Z0.String(),
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: fakeCurrentKubeDNSVersion,
|
||||
EtcdVersion: fakeCurrentEtcdVersion,
|
||||
},
|
||||
After: ClusterState{
|
||||
KubeVersion: v1Z0.String(),
|
||||
KubeadmVersion: v1Z0.String(),
|
||||
DNSType: kubeadmapi.CoreDNS,
|
||||
DNSVersion: constants.CoreDNSVersion,
|
||||
EtcdVersion: getEtcdVersion(v1Z0),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "keep coredns",
|
||||
vg: &fakeVersionGetter{
|
||||
clusterVersion: v1Y2.String(),
|
||||
kubeletVersion: v1Y2.String(), // the kubelet are on the same version as the control plane
|
||||
kubeadmVersion: v1Z0.String(),
|
||||
|
||||
stablePatchVersion: v1Z0.String(),
|
||||
stableVersion: v1Z0.String(),
|
||||
},
|
||||
beforeDNSType: kubeadmapi.KubeDNS,
|
||||
beforeDNSVersion: fakeCurrentKubeDNSVersion,
|
||||
dnsType: kubeadmapi.KubeDNS,
|
||||
expectedUpgrades: []Upgrade{
|
||||
{
|
||||
Description: fmt.Sprintf("version in the v%d.%d series", v1Y0.Major(), v1Y0.Minor()),
|
||||
Before: ClusterState{
|
||||
KubeVersion: v1Y2.String(),
|
||||
KubeletVersions: map[string]uint16{
|
||||
v1Y2.String(): 1,
|
||||
},
|
||||
KubeadmVersion: v1Z0.String(),
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: fakeCurrentKubeDNSVersion,
|
||||
EtcdVersion: fakeCurrentEtcdVersion,
|
||||
},
|
||||
After: ClusterState{
|
||||
KubeVersion: v1Z0.String(),
|
||||
KubeadmVersion: v1Z0.String(),
|
||||
DNSType: kubeadmapi.KubeDNS,
|
||||
DNSVersion: constants.KubeDNSVersion,
|
||||
EtcdVersion: getEtcdVersion(v1Z0),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
// Instantiating a fake etcd cluster for being able to get etcd version for a corresponding
|
||||
@ -746,9 +673,6 @@ func TestGetAvailableUpgrades(t *testing.T) {
|
||||
t.Run(rt.name, func(t *testing.T) {
|
||||
|
||||
dnsName := constants.CoreDNSDeploymentName
|
||||
if rt.beforeDNSType == kubeadmapi.KubeDNS {
|
||||
dnsName = constants.KubeDNSDeploymentName
|
||||
}
|
||||
|
||||
client := clientsetfake.NewSimpleClientset(&apps.Deployment{
|
||||
TypeMeta: metav1.TypeMeta{
|
||||
|
||||
@ -25,7 +25,6 @@ import (
|
||||
v1 "k8s.io/api/core/v1"
|
||||
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/fields"
|
||||
"k8s.io/apimachinery/pkg/labels"
|
||||
errorsutil "k8s.io/apimachinery/pkg/util/errors"
|
||||
clientset "k8s.io/client-go/kubernetes"
|
||||
@ -102,12 +101,12 @@ func PerformPostUpgradeTasks(client clientset.Interface, cfg *kubeadmapi.InitCon
|
||||
errs = append(errs, err)
|
||||
}
|
||||
|
||||
// If the coredns / kube-dns ConfigMaps are missing, show a warning and assume that the
|
||||
// If the coredns ConfigMap is missing, show a warning and assume that the
|
||||
// DNS addon was skipped during "kubeadm init", and that its redeployment on upgrade is not desired.
|
||||
//
|
||||
// TODO: remove this once "kubeadm upgrade apply" phases are supported:
|
||||
// https://github.com/kubernetes/kubeadm/issues/1318
|
||||
var missingCoreDNSConfigMap, missingKubeDNSConfigMap bool
|
||||
var missingCoreDNSConfigMap bool
|
||||
if _, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(
|
||||
context.TODO(),
|
||||
kubeadmconstants.CoreDNSConfigMap,
|
||||
@ -115,30 +114,18 @@ func PerformPostUpgradeTasks(client clientset.Interface, cfg *kubeadmapi.InitCon
|
||||
); err != nil && apierrors.IsNotFound(err) {
|
||||
missingCoreDNSConfigMap = true
|
||||
}
|
||||
if _, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(
|
||||
context.TODO(),
|
||||
kubeadmconstants.KubeDNSConfigMap,
|
||||
metav1.GetOptions{},
|
||||
); err != nil && apierrors.IsNotFound(err) {
|
||||
missingKubeDNSConfigMap = true
|
||||
}
|
||||
if missingCoreDNSConfigMap && missingKubeDNSConfigMap {
|
||||
klog.Warningf("the ConfigMaps %q/%q in the namespace %q were not found. "+
|
||||
if missingCoreDNSConfigMap {
|
||||
klog.Warningf("the ConfigMaps %q in the namespace %q were not found. "+
|
||||
"Assuming that a DNS server was not deployed for this cluster. "+
|
||||
"Note that once 'kubeadm upgrade apply' supports phases you "+
|
||||
"will have to skip the DNS upgrade manually",
|
||||
kubeadmconstants.CoreDNSConfigMap,
|
||||
kubeadmconstants.KubeDNSConfigMap,
|
||||
metav1.NamespaceSystem)
|
||||
} else {
|
||||
// Upgrade CoreDNS/kube-dns
|
||||
// Upgrade CoreDNS
|
||||
if err := dns.EnsureDNSAddon(&cfg.ClusterConfiguration, client); err != nil {
|
||||
errs = append(errs, err)
|
||||
}
|
||||
// Remove the old DNS deployment if a new DNS service is now used (kube-dns to CoreDNS or vice versa)
|
||||
if err := removeOldDNSDeploymentIfAnotherDNSIsUsed(&cfg.ClusterConfiguration, client, dryRun); err != nil {
|
||||
errs = append(errs, err)
|
||||
}
|
||||
}
|
||||
|
||||
// If the kube-proxy ConfigMap is missing, show a warning and assume that kube-proxy
|
||||
@ -167,44 +154,6 @@ func PerformPostUpgradeTasks(client clientset.Interface, cfg *kubeadmapi.InitCon
|
||||
return errorsutil.NewAggregate(errs)
|
||||
}
|
||||
|
||||
func removeOldDNSDeploymentIfAnotherDNSIsUsed(cfg *kubeadmapi.ClusterConfiguration, client clientset.Interface, dryRun bool) error {
|
||||
return apiclient.TryRunCommand(func() error {
|
||||
installedDeploymentName := kubeadmconstants.KubeDNSDeploymentName
|
||||
deploymentToDelete := kubeadmconstants.CoreDNSDeploymentName
|
||||
|
||||
if cfg.DNS.Type == kubeadmapi.CoreDNS {
|
||||
installedDeploymentName = kubeadmconstants.CoreDNSDeploymentName
|
||||
deploymentToDelete = kubeadmconstants.KubeDNSDeploymentName
|
||||
}
|
||||
|
||||
nodes, err := client.CoreV1().Nodes().List(context.TODO(), metav1.ListOptions{
|
||||
FieldSelector: fields.Set{"spec.unschedulable": "false"}.AsSelector().String(),
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// If we're dry-running or there are no schedulable nodes available, we don't need to wait for the new DNS addon to become ready
|
||||
if !dryRun && len(nodes.Items) != 0 {
|
||||
dnsDeployment, err := client.AppsV1().Deployments(metav1.NamespaceSystem).Get(context.TODO(), installedDeploymentName, metav1.GetOptions{})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if dnsDeployment.Status.ReadyReplicas == 0 {
|
||||
return errors.New("the DNS deployment isn't ready yet")
|
||||
}
|
||||
}
|
||||
|
||||
// We don't want to wait for the DNS deployment above to become ready when dryrunning (as it never will)
|
||||
// but here we should execute the DELETE command against the dryrun clientset, as it will only be logged
|
||||
err = apiclient.DeleteDeploymentForeground(client, metav1.NamespaceSystem, deploymentToDelete)
|
||||
if err != nil && !apierrors.IsNotFound(err) {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}, 10)
|
||||
}
|
||||
|
||||
func writeKubeletConfigFiles(client clientset.Interface, cfg *kubeadmapi.InitConfiguration, dryRun bool) error {
|
||||
kubeletDir, err := GetKubeletDir(dryRun)
|
||||
if err != nil {
|
||||
|
||||
@ -17,7 +17,6 @@ limitations under the License.
|
||||
package upgrade
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"os"
|
||||
"strings"
|
||||
@ -25,8 +24,6 @@ import (
|
||||
"github.com/coredns/corefile-migration/migration"
|
||||
"github.com/pkg/errors"
|
||||
|
||||
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/util/sets"
|
||||
clientset "k8s.io/client-go/kubernetes"
|
||||
"k8s.io/klog/v2"
|
||||
@ -72,11 +69,6 @@ func RunCoreDNSMigrationCheck(client clientset.Interface, ignorePreflightErrors
|
||||
client: client,
|
||||
f: checkMigration,
|
||||
},
|
||||
&CoreDNSCheck{
|
||||
name: "kubeDNSTranslation",
|
||||
client: client,
|
||||
f: checkKubeDNSConfigMap,
|
||||
},
|
||||
}
|
||||
|
||||
return preflight.RunChecks(migrationChecks, os.Stderr, ignorePreflightErrors)
|
||||
@ -126,21 +118,3 @@ func checkMigration(client clientset.Interface) error {
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkKubeDNSConfigMap checks if the translation of kube-dns to CoreDNS ConfigMap is supported
|
||||
func checkKubeDNSConfigMap(client clientset.Interface) error {
|
||||
kubeDNSConfigMap, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(context.TODO(), kubeadmconstants.KubeDNSConfigMap, metav1.GetOptions{})
|
||||
if err != nil {
|
||||
if apierrors.IsNotFound(err) {
|
||||
return nil
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
if _, ok := kubeDNSConfigMap.Data["federations"]; ok {
|
||||
klog.V(1).Infoln("CoreDNS no longer supports Federation and " +
|
||||
"hence will not translate the federation data from kube-dns to CoreDNS ConfigMap")
|
||||
return errors.New("kube-dns Federation data will not be translated")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
@ -80,7 +80,7 @@ func (idr *InitDryRunGetter) HandleListAction(action core.ListAction) (bool, run
|
||||
}
|
||||
|
||||
// handleKubernetesService returns a faked Kubernetes service in order to be able to continue running kubeadm init.
|
||||
// The kube-dns addon code GETs the Kubernetes service in order to extract the service subnet
|
||||
// The CoreDNS addon code GETs the Kubernetes service in order to extract the service subnet
|
||||
func (idr *InitDryRunGetter) handleKubernetesService(action core.GetAction) (bool, runtime.Object, error) {
|
||||
if action.GetName() != "kubernetes" || action.GetNamespace() != metav1.NamespaceDefault || action.GetResource().Resource != "services" {
|
||||
// We can't handle this event
|
||||
@ -97,7 +97,7 @@ func (idr *InitDryRunGetter) handleKubernetesService(action core.GetAction) (boo
|
||||
return true, nil, errors.Wrapf(err, "unable to get first IP address from the given CIDR (%s)", svcSubnet.String())
|
||||
}
|
||||
|
||||
// The only used field of this Service object is the ClusterIP, which kube-dns uses to calculate its own IP
|
||||
// The only used field of this Service object is the ClusterIP, which CoreDNS uses to calculate its own IP
|
||||
return true, &v1.Service{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "kubernetes",
|
||||
|
||||
Loading…
Reference in New Issue
Block a user