我的 kube-dns pod 崩溃了：
kube-dns-6d4fc847dc-6bh59 1/3 CrashLoopBackOff 5844 7d13h
这些是来自 kubedns 容器的日志
kubectl logs kube-dns-6d4fc847dc-6bh59 --namespace kube-system -c kubedns
I1021 00:56:37.547936 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:38.047923 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
E1021 00:56:38.048390 1 reflector.go:201] k8s.io/dns/pkg/dns/dns.go:192: Failed to list *v1.Service: Get https://100.64.0.1:443/api/v1/services?resourceVersion=0: dial tcp 100.64.0.1:443: i/o timeout
E1021 00:56:38.048405 1 reflector.go:201] k8s.io/dns/pkg/dns/dns.go:189: Failed to list *v1.Endpoints: Get https://100.64.0.1:443/api/v1/endpoints?resourceVersion=0: dial tcp 100.64.0.1:443: i/o timeout
I1021 00:56:38.547922 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:39.047917 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:39.547923 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:40.047935 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:40.547928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:41.047931 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:41.547929 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:42.047924 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:42.547931 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:43.047909 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:43.547921 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:44.047923 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:44.547932 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:45.047935 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:45.547927 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:46.047928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:46.547929 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:47.047925 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:47.547933 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:48.047914 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:48.547930 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:49.047927 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:49.547929 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:50.047925 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:50.547928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:51.047933 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:51.547928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:52.047920 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:52.547930 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:53.047913 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:53.547931 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:54.047925 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:54.547930 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:55.047928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:55.547938 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:56.047935 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:56.547937 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:57.047940 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:57.547941 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:58.047915 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:58.547934 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:59.047932 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:56:59.547937 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:00.047942 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:00.547934 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:01.047925 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:01.547929 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:02.047915 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:02.547924 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:03.047906 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:03.547927 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:04.047934 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:04.547927 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:05.047933 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:05.547925 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:06.047928 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:06.547926 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:07.047926 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
I1021 00:57:07.547930 1 dns.go:219] Waiting for [endpoints services] to be initialized from apiserver...
F1021 00:57:08.047911 1 dns.go:209] Timeout waiting for initialization
请帮忙。
看起来你的kube-dnspod 无法与你的 kube-apiserver 通信。kube-apiserver 上的端口443已被弃用了一段时间。您的配置映射或配置文件使其指向<kube-master:443>。
您可以尝试使用--kube-master-url选项在 kube-dns 部署上覆盖它。像这样：
apiVersion: apps/v1
kind: Deployment
metadata:
name: kube-dns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
spec:
strategy:
rollingUpdate:
maxSurge: 10%
maxUnavailable: 0
selector:
matchLabels:
k8s-app: kube-dns
template:
metadata:
labels:
k8s-app: kube-dns
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
tolerations:
- key: "CriticalAddonsOnly"
operator: "Exists"
volumes:
- name: kube-dns-config
configMap:
name: kube-dns
optional: true
containers:
- name: kubedns
image: gcr.io/google_containers/k8s-dns-kube-dns-amd64:1.14.7
...
args:
- --kube-master-url=https://<master-ip>:6443
- --domain=cluster.local.
- --dns-port=10053
- --config-dir=/kube-dns-config
- --v=2
您可以从以下输出中获取：
$ kubectl cluster-info