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Only check Readiness of masters, not every node

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This commit is contained in:
Angus Lees
2017-11-21 16:43:36 +11:00
parent 68ea48bd2b
commit 3da5985916
2 changed files with 21 additions and 10 deletions
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1
cmd/kubeadm/app/phases/upgrade/BUILD
View File

@@ -43,6 +43,7 @@ go_library(
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",

30
cmd/kubeadm/app/phases/upgrade/health.go
View File

@@ -24,6 +24,7 @@ import (
apps "k8s.io/api/apps/v1beta2"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/util/sets"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
@@ -53,7 +54,7 @@ func (c *healthCheck) Name() string {
// CheckClusterHealth makes sure:
// - the API /healthz endpoint is healthy
// - all Nodes are Ready
// - all master Nodes are Ready
// - (if self-hosted) that there are DaemonSets with at least one Pod for all control plane components
// - (if static pod-hosted) that all required Static Pod manifests exist on disk
func CheckClusterHealth(client clientset.Interface, ignoreChecksErrors sets.String) error {
@@ -66,9 +67,9 @@ func CheckClusterHealth(client clientset.Interface, ignoreChecksErrors sets.Stri
f: apiServerHealthy,
},
&healthCheck{
name: "NodeHealth",
name: "MasterNodesReady",
client: client,
f: nodesHealthy,
f: masterNodesReady,
},
// TODO: Add a check for ComponentStatuses here?
}
@@ -106,16 +107,25 @@ func apiServerHealthy(client clientset.Interface) error {
return nil
}
// nodesHealthy checks whether all Nodes in the cluster are in the Running state
func nodesHealthy(client clientset.Interface) error {
nodes, err := client.CoreV1().Nodes().List(metav1.ListOptions{})
// masterNodesReady checks whether all master Nodes in the cluster are in the Running state
func masterNodesReady(client clientset.Interface) error {
selector := labels.SelectorFromSet(labels.Set(map[string]string{
constants.LabelNodeRoleMaster: "",
}))
masters, err := client.CoreV1().Nodes().List(metav1.ListOptions{
LabelSelector: selector.String(),
})
if err != nil {
return fmt.Errorf("couldn't list all nodes in cluster: %v", err)
return fmt.Errorf("couldn't list masters in cluster: %v", err)
}
notReadyNodes := getNotReadyNodes(nodes.Items)
if len(notReadyNodes) != 0 {
return fmt.Errorf("there are NotReady Nodes in the cluster: %v", notReadyNodes)
if len(masters.Items) == 0 {
return fmt.Errorf("failed to find any nodes with master role")
}
notReadyMasters := getNotReadyNodes(masters.Items)
if len(notReadyMasters) != 0 {
return fmt.Errorf("there are NotReady masters in the cluster: %v", notReadyMasters)
}
return nil
}