Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Panic when DynamicKubeletConfig is enabled. #553

Closed
xiangpengzhao opened this issue Nov 19, 2017 · 0 comments · Fixed by kubernetes/kubernetes#56008
Closed

Panic when DynamicKubeletConfig is enabled. #553

xiangpengzhao opened this issue Nov 19, 2017 · 0 comments · Fixed by kubernetes/kubernetes#56008
Assignees
@xiangpengzhao
Labels
kind/bug Categorizes issue or PR as related to a bug. priority/important-soon Must be staffed and worked on either currently, or very soon, ideally in time for the next release.
Milestone
v1.9

Comments

@xiangpengzhao
Copy link

Feedback from @luxas on slack.

_output/bin/kubeadm init --feature-gates DynamicKubeletConfig=true --kubernetes-version ci/latest
[kubeadm] WARNING: kubeadm is currently in beta
[init] Using Kubernetes version: v1.10.0-alpha.0.100+2d972c19bfdf2e
[init] Using Authorization modes: [Node RBAC]
[preflight] Running pre-flight checks.
[preflight] WARNING: kubernetes version is greater than kubeadm version. Please consider to upgrade kubeadm. kubernetes version: 1.10.0-alpha.0.100+2d972c19bfdf2e. Kubeadm version: 1.9.x
[preflight] WARNING: crictl not found in system path
[preflight] WARNING: docker service is not enabled, please run 'systemctl enable docker.service'
[preflight] Starting the kubelet service
[certificates] Generated ca certificate and key.
[certificates] Generated apiserver certificate and key.
[certificates] apiserver serving cert is signed for DNS names [thegopher kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 192.168.1.115]
[certificates] Generated apiserver-kubelet-client certificate and key.
[certificates] Generated sa key and public key.
[certificates] Generated front-proxy-ca certificate and key.
[certificates] Generated front-proxy-client certificate and key.
[certificates] Valid certificates and keys now exist in "/etc/kubernetes/pki"
[kubeconfig] Wrote KubeConfig file to disk: "admin.conf"
[kubeconfig] Wrote KubeConfig file to disk: "kubelet.conf"
[kubeconfig] Wrote KubeConfig file to disk: "controller-manager.conf"
[kubeconfig] Wrote KubeConfig file to disk: "scheduler.conf"
[controlplane] Wrote Static Pod manifest for component kube-apiserver to "/etc/kubernetes/manifests/kube-apiserver.yaml"
[controlplane] Wrote Static Pod manifest for component kube-controller-manager to "/etc/kubernetes/manifests/kube-controller-manager.yaml"
[controlplane] Wrote Static Pod manifest for component kube-scheduler to "/etc/kubernetes/manifests/kube-scheduler.yaml"
[etcd] Wrote Static Pod manifest for a local etcd instance to "/etc/kubernetes/manifests/etcd.yaml"
[init] Waiting for the kubelet to boot up the control plane as Static Pods from directory "/etc/kubernetes/manifests".
[init] This might take a minute or longer if the control plane images have to be pulled.
[apiclient] All control plane components are healthy after 53.002568 seconds
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x29ab0bd]

goroutine 1 [running]:
k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet.UpdateNodeWithConfigMap.func1(0xc420cb2060, 0xc420ee3727, 0xc420ee3701)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet/kubelet.go:89 +0x20d
k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.WaitFor(0xc420b4c280, 0xc420b400f0, 0xc420cb2000, 0x8d186d, 0x31dcfa0)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:311 +0x6b
k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.pollInternal(0xc420b4c280, 0xc420b400f0, 0x0, 0x0)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:227 +0x94
k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait.Poll(0x1dcd6500, 0x1bf08eb000, 0xc420b400f0, 0x0, 0x0)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:221 +0x4d
k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet.UpdateNodeWithConfigMap(0x52e9260, 0xc420867c00, 0xc4207a8290, 0x9, 0x0, 0x820)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet/kubelet.go:73 +0xaa
k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet.CreateBaseKubeletConfiguration(0xc4203b0000, 0x52e9260, 0xc420867c00, 0x14, 0xc420a8c9e8)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/phases/kubelet/kubelet.go:67 +0x3ac
k8s.io/kubernetes/cmd/kubeadm/app/cmd.(*Init).Run(0xc4201a03f0, 0x52b0d80, 0xc42000c018, 0x0, 0x36aa94f)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/init.go:360 +0x1bb9
k8s.io/kubernetes/cmd/kubeadm/app/cmd.NewCmdInit.func1(0xc4202186c0, 0xc4207bfec0, 0x0, 0x4)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/init.go:132 +0x24e
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).execute(0xc4202186c0, 0xc4207bfe80, 0x4, 0x4, 0xc4202186c0, 0xc4207bfe80)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:603 +0x234
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0xc420280fc0, 0xc420210900, 0xc420219440, 0xc4202186c0)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:689 +0x2fe
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).Execute(0xc420280fc0, 0xc42000c010, 0x52b0d80)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:648 +0x2b
k8s.io/kubernetes/cmd/kubeadm/app.Run(0xc4209bff70, 0x4046f4)
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/app/kubeadm.go:36 +0xe3
main.main()
	/home/lucas/luxas/kubernetes/_output/local/go/src/k8s.io/kubernetes/cmd/kubeadm/kubeadm.go:27 +0x26
@xiangpengzhao xiangpengzhao mentioned this issue Nov 19, 2017
Merged
@luxas luxas mentioned this issue Nov 19, 2017
Closed
@luxas luxas added this to the v1.9 milestone Nov 19, 2017
@luxas luxas added kind/bug Categorizes issue or PR as related to a bug. priority/important-soon Must be staffed and worked on either currently, or very soon, ideally in time for the next release. labels Nov 19, 2017
k8s-github-robot pushed a commit to kubernetes/kubernetes that referenced this issue Nov 19, 2017
Merge pull request #56008 from xiangpengzhao/kubeadm-dkc-panic
3447dc0 
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix panic when assigning configmap UID of kubelet configuration.

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes kubernetes/kubeadm#553

**Special notes for your reviewer**:
/cc @luxas 

**Release note**:

```release-note
NONE
```
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@xiangpengzhao xiangpengzhao

Labels
kind/bug Categorizes issue or PR as related to a bug. priority/important-soon Must be staffed and worked on either currently, or very soon, ideally in time for the next release.
Projects
None yet
Milestone
v1.9
Development

Successfully merging a pull request may close this issue.

Fix panic when assigning configmap UID of kubelet configuration. xiangpengzhao/kubernetes
2 participants
@luxas @xiangpengzhao