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Merge pull request #43494 from guangxuli/fix_k8s_kubelet_panix

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Automatic merge from submit-queue (batch tested with PRs 49238, 49595, 43494, 47897, 48905)

Should not set struct pointer directly to interface which may cause potential panic

fix https://github.com/kubernetes/kubernetes/issues/43127 to avoid potential kubelet panic.

In our old implemention, interface `kubeDeps.EventClient ` (interface) will never equals to `nil` even if `eventClient `(struct pointer )was set to `nil`.  `kubeDeps.ExternalKubeClient` and `kubeDeps.KubeClient` also have same potential risk.
This commit is contained in:
Kubernetes Submit Queue 2017-07-28 02:12:56 -07:00 committed by GitHub
commit b3db5a20c1
1 changed files with 4 additions and 1 deletions
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3
cmd/kubelet/app/server.go
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@ -157,6 +157,7 @@ func UnsecuredDependencies(s *options.KubeletServer) (*kubelet.Dependencies, err
DockerClient: dockerClient,
KubeClient: nil,
ExternalKubeClient: nil,
EventClient: nil,
Mounter: mounter,
NetworkPlugins: ProbeNetworkPlugins(s.NetworkPluginDir, s.CNIConfDir, s.CNIBinDir),
OOMAdjuster: oom.NewOOMAdjuster(),
@ -513,8 +514,10 @@ func run(s *options.KubeletServer, kubeDeps *kubelet.Dependencies) (err error) {
kubeDeps.KubeClient = kubeClient
kubeDeps.ExternalKubeClient = externalKubeClient
if eventClient != nil {
kubeDeps.EventClient = eventClient
}
}
if kubeDeps.Auth == nil {
auth, err := BuildAuth(nodeName, kubeDeps.ExternalKubeClient, s.KubeletConfiguration)