解决k8s部署dashboard时一直处于Pending状态的问题
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部署dashboard时一直处于Pending状态
搭建Dashboard时执行
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.4/aio/deploy/recommended.yaml
查看pod状态,一直报错Pending
[root@master01 k8s]# kubectl get pods -n kubernetes-dashboard
NAME READY STATUS RESTARTS AGE
dashboard-metrics-scraper-6c9bfb459b-ldrfb 0/1 Pending 0 28m
kubernetes-dashboard-5947dc95db-n42cs 0/1 Pending 0 20m
查看pod的详细信息,发现报错调度错误:0/2 nodes are available: 2 node(s) didn’t match node selector
[root@master01 k8s]# kubectl describe pod kubernetes-dashboard-5947dc95db-n42cs -n kubernetes-dashboard
Name: kubernetes-dashboard-5947dc95db-n42cs
Namespace: kubernetes-dashboard
Priority: 0
PriorityClassName: <none>
Node: <none>
Labels: k8s-app=kubernetes-dashboard
pod-template-hash=5947dc95db
Annotations: <none>
Status: Pending
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 83s (x241 over 21m) default-scheduler 0/2 nodes are available: 2 node(s) didn't match node selector.
原因:如果当前集群中没有一个node的label符合这个nodeSelector,就会报这个错误
解决方法:在yaml文件里面注释掉nodeSelector
重新启动dashboard,验证pod启动成功
[root@master01 k8s]# kubectl get pods -n kubernetes-dashboard
NAME READY STATUS RESTARTS AGE
dashboard-metrics-scraper-7f44bd8d8b-pqs75 1/1 Running 0 7s
kubernetes-dashboard-849796f7fd-9kfnm 1/1 Running 0 7s
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