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Merge pull request #107532 from marseel/add_bootstrap_to_kubemark

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Add option to bootstrap kubeconfig for hollow-node
This commit is contained in:
Kubernetes Prow Robot 2022-02-02 06:44:21 -08:00 committed by GitHub
commit 8f80ae88f2
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1 changed files with 33 additions and 15 deletions
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48
cmd/kubemark/hollow-node.go
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@ -17,6 +17,7 @@ limitations under the License.
package main
import (
"context"
"errors"
goflag "flag"
"fmt"
@ -30,6 +31,7 @@ import (
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
clientset "k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest"
@ -45,6 +47,7 @@ import (
"k8s.io/kubernetes/pkg/api/legacyscheme"
"k8s.io/kubernetes/pkg/cluster/ports"
cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
"k8s.io/kubernetes/pkg/kubelet/certificate/bootstrap"
"k8s.io/kubernetes/pkg/kubelet/cm"
"k8s.io/kubernetes/pkg/kubelet/cri/remote"
fakeremote "k8s.io/kubernetes/pkg/kubelet/cri/remote/fake"
@ -55,21 +58,23 @@ import (
)
type hollowNodeConfig struct {
KubeconfigPath string
KubeletPort int
KubeletReadOnlyPort int
Morph string
NodeName string
ServerPort int
ContentType string
UseRealProxier bool
ProxierSyncPeriod time.Duration
ProxierMinSyncPeriod time.Duration
NodeLabels map[string]string
RegisterWithTaints []v1.Taint
MaxPods int
ExtendedResources map[string]string
UseHostImageService bool
KubeconfigPath string
BootstrapKubeconfigPath string
CertDirectory string
KubeletPort int
KubeletReadOnlyPort int
Morph string
NodeName string
ServerPort int
ContentType string
UseRealProxier bool
ProxierSyncPeriod time.Duration
ProxierMinSyncPeriod time.Duration
NodeLabels map[string]string
RegisterWithTaints []v1.Taint
MaxPods int
ExtendedResources map[string]string
UseHostImageService bool
}
const (
@ -83,6 +88,8 @@ var knownMorphs = sets.NewString("kubelet", "proxy")
func (c *hollowNodeConfig) addFlags(fs *pflag.FlagSet) {
fs.StringVar(&c.KubeconfigPath, "kubeconfig", "/kubeconfig/kubeconfig", "Path to kubeconfig file.")
fs.StringVar(&c.BootstrapKubeconfigPath, "bootstrap-kubeconfig", "", "Path to bootstrap kubeconfig file.")
fs.StringVar(&c.CertDirectory, "cert-dir", "/etc/srv/", "Path to cert directory for bootstraping.")
fs.IntVar(&c.KubeletPort, "kubelet-port", ports.KubeletPort, "Port on which HollowKubelet should be listening.")
fs.IntVar(&c.KubeletReadOnlyPort, "kubelet-read-only-port", ports.KubeletReadOnlyPort, "Read-only port on which Kubelet is listening.")
fs.StringVar(&c.NodeName, "name", "fake-node", "Name of this Hollow Node.")
@ -116,6 +123,13 @@ func (c *hollowNodeConfig) createClientConfigFromFile() (*restclient.Config, err
return config, nil
}
func (c *hollowNodeConfig) bootstrapClientConfig() error {
if c.BootstrapKubeconfigPath != "" {
return bootstrap.LoadClientCert(context.TODO(), c.KubeconfigPath, c.BootstrapKubeconfigPath, c.CertDirectory, types.NodeName(c.NodeName))
}
return nil
}
func (c *hollowNodeConfig) createHollowKubeletOptions() *kubemark.HollowKubletOptions {
return &kubemark.HollowKubletOptions{
NodeName: c.NodeName,
@ -175,6 +189,10 @@ func run(cmd *cobra.Command, config *hollowNodeConfig) error {
}
// create a client to communicate with API server.
err := config.bootstrapClientConfig()
if err != nil {
return fmt.Errorf("Failed to bootstrap, error: %w. Exiting", err)
}
clientConfig, err := config.createClientConfigFromFile()
if err != nil {
return fmt.Errorf("Failed to create a ClientConfig, error: %w. Exiting", err)