2022-08-30

现象：
1、在安装完k8s以后，加载ui面：
kubectl create -f kubernetes-dashboard.yaml
2、查看容器状态：
[root@k8s-master software]# kubectl get pods --namespace kube-system NAME READY STATUS RESTARTS AGE kubernetes-dashboard-3852341777-135gm 0/1 ContainerCreating 0 5m
3、检查报错信息：

`[root@k8s-master software]# kubectl describe pod kubernetes-dashboard-3852341777-135gm --namespace kube-system
Name: kubernetes-dashboard-3852341777-135gm
Namespace: kube-system
Node: 10.1.108.78/10.1.108.78
Start Time: Tue, 27 Jun 2017 17:18:35 +0800
Labels: k8s-app=kubernetes-dashboard

<pre class="prettyprint linenums prettyprinted" style="box-sizing: border-box; margin: 0px 0px 10px; padding: 10px; overflow-wrap: break-word; word-spacing: 0px; font-family: monospace, monospace; font-style: normal; line-height: 1.7; overflow: auto; display: block; word-break: break-all; background-color: rgb(245, 245, 245); border: 1px solid rgb(226, 226, 226); border-radius: 4px; font-size: 14px; color: rgb(51, 51, 51); font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">

  1. pod-template-hash=3852341777

</pre>

Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"kube-system","name":"kubernetes-dashboard-3852341777","uid":"985001e1-5b19-11e7-a...
Status: Pending
IP:
Controllers: ReplicaSet/kubernetes-dashboard-3852341777
Containers:
kubernetes-dashboard:

<pre class="prettyprint linenums prettyprinted" style="box-sizing: border-box; margin: 0px 0px 10px; padding: 10px; overflow-wrap: break-word; word-spacing: 0px; font-family: monospace, monospace; font-style: normal; line-height: 1.7; overflow: auto; display: block; word-break: break-all; background-color: rgb(245, 245, 245); border: 1px solid rgb(226, 226, 226); border-radius: 4px; font-size: 14px; color: rgb(51, 51, 51); font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">

  1. Container ID:
  2. Image: registry.sinosafe.com.cn:5000/sinosafe/kubernetes/kubernetes-dashboard:1.5.1
  3. Image ID:
  4. Port: 9090/TCP
  5. Args:
  6. --apiserver-host=http://10.1.108.77:8080
  7. State: Waiting
  8. Reason: ContainerCreating
  9. Ready: False
  10. Restart Count: 0
  11. Liveness: http-get http://:9090/ delay=30s timeout=30s period=10s #success=1 #failure=3
  12. Environment: <none>
  13. Mounts: <none>

</pre>

Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes: <none>
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node-role.kubernetes.io/master=:NoSchedule
Events:
FirstSeen LastSeen Count From SubObjectPath Type Reason Message

5m 5m 1 default-scheduler Normal Scheduled Successfully assigned kubernetes-dashboard-3852341777-135gm to 10.1.108.78
5m 20s 6 kubelet, 10.1.108.78 Warning FailedSync Error syncing pod, skipping: failed to "CreatePodSandbox" for "kubernetes-dashboard-3852341777-135gm_kube-system(9858b797-5b19-11e7-a69f-842b2b5e0f11)" with CreatePodSandboxError: "CreatePodSandbox for pod "kubernetes-dashboard-3852341777-135gm_kube-system(9858b797-5b19-11e7-a69f-842b2b5e0f11)" failed: rpc error: code = 2 desc = unable to pull sandbox image "gcr.io/google_containers/pause-amd64:3.0": Error response from daemon: {"message":"Get https://gcr.io/v1/_ping: dial tcp 74.125.23.82:443: i/o timeout"}"

5m 7s 7 kubelet, 10.1.108.78 Warning MissingClusterDNS kubelet does not have ClusterDNS IP configured and cannot create Pod using "ClusterFirst" policy. Falling back to DNSDefault policy.
[root@k8s-master software]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.sinosafe.com.cn:5000/sinosafe/jenkins latest 681ef98a247f 5 weeks ago 704 MB
registry.sinosafe.com.cn:5000/sinosafe/centos 7.1.1 d9c3f227207e 3 months ago 605 MB
registry.sinosafe.com.cn:5000/sinosafe/kubernetes/kubernetes-dashboard 1.5.1 1180413103fd 5 months ago 104 MB
daocloud.io/gfkchinanetquest/kubernetes-dashboard-amd64 v1.5.1 1180413103fd 5 months ago 104 MB
daocloud.io/daocloud/google_containers_pause-amd64 3.0 99e59f495ffa 13 months ago 747 kB
gcr.io/google_containers/pause-amd64 3.0 99e59f495ffa 13 months ago 747 kB
[root@k8s-master software]# kubectl describe pod kubernetes-dashboard-3852341777-135gm --namespace kube-system
Name: kubernetes-dashboard-3852341777-135gm
Namespace: kube-system
Node: 10.1.108.78/10.1.108.78
Start Time: Tue, 27 Jun 2017 17:18:35 +0800
Labels: k8s-app=kubernetes-dashboard

<pre class="prettyprint linenums prettyprinted" style="box-sizing: border-box; margin: 0px 0px 10px; padding: 10px; overflow-wrap: break-word; word-spacing: 0px; font-family: monospace, monospace; font-style: normal; line-height: 1.7; overflow: auto; display: block; word-break: break-all; background-color: rgb(245, 245, 245); border: 1px solid rgb(226, 226, 226); border-radius: 4px; font-size: 14px; color: rgb(51, 51, 51); font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">

  1. pod-template-hash=3852341777

</pre>

Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"kube-system","name":"kubernetes-dashboard-3852341777","uid":"985001e1-5b19-11e7-a...
Status: Pending
IP:
Controllers: ReplicaSet/kubernetes-dashboard-3852341777
Containers:
kubernetes-dashboard:

<pre class="prettyprint linenums prettyprinted" style="box-sizing: border-box; margin: 0px 0px 10px; padding: 10px; overflow-wrap: break-word; word-spacing: 0px; font-family: monospace, monospace; font-style: normal; line-height: 1.7; overflow: auto; display: block; word-break: break-all; background-color: rgb(245, 245, 245); border: 1px solid rgb(226, 226, 226); border-radius: 4px; font-size: 14px; color: rgb(51, 51, 51); font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">

  1. Container ID:
  2. Image: registry.sinosafe.com.cn:5000/sinosafe/kubernetes/kubernetes-dashboard:1.5.1
  3. Image ID:
  4. Port: 9090/TCP
  5. Args:
  6. --apiserver-host=http://10.1.108.77:8080
  7. State: Waiting
  8. Reason: ContainerCreating
  9. Ready: False
  10. Restart Count: 0
  11. Liveness: http-get http://:9090/ delay=30s timeout=30s period=10s #success=1 #failure=3
  12. Environment: <none>
  13. Mounts: <none>

</pre>

Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes: <none>
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node-role.kubernetes.io/master=:NoSchedule
Events:
FirstSeen LastSeen Count From SubObjectPath Type Reason Message

10m 10m 1 default-scheduler Normal Scheduled Successfully assigned kubernetes-dashboard-3852341777-135gm to 10.1.108.78
9m 18s 11 kubelet, 10.1.108.78 Warning FailedSync Error syncing pod, skipping: failed to "CreatePodSandbox" for "kubernetes-dashboard-3852341777-135gm_kube-system(9858b797-5b19-11e7-a69f-842b2b5e0f11)" with CreatePodSandboxError: "CreatePodSandbox for pod "kubernetes-dashboard-3852341777-135gm_kube-system(9858b797-5b19-11e7-a69f-842b2b5e0f11)" failed: rpc error: code = 2 desc = unable to pull sandbox image "gcr.io/google_containers/pause-amd64:3.0": Error response from daemon: {"message":"Get https://gcr.io/v1/_ping: dial tcp 74.125.23.82:443: i/o timeout"}"

10m 7s 12 kubelet, 10.1.108.78 Warning MissingClusterDNS kubelet does not have ClusterDNS IP configured and cannot create Pod using "ClusterFirst" policy. Falling back to DNSDefault policy.
4、查看本地镜像（本地gcr.io/google_containers/pause-amd64已经有这个镜像了，镜像是从docker pull daocloud.io/daocloud/google_containers_pause-amd64:3.0下载的）：

[root@k8s-master ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.sinosafe.com.cn:5000/sinosafe/jenkins latest 681ef98a247f 5 weeks ago 704 MB
registry.sinosafe.com.cn:5000/sinosafe/centos 7.1.1 d9c3f227207e 3 months ago 605 MB
daocloud.io/gfkchinanetquest/kubernetes-dashboard-amd64 v1.5.1 1180413103fd 5 months ago 104 MB
registry.sinosafe.com.cn:5000/sinosafe/kubernetes/kubernetes-dashboard 1.5.1 1180413103fd 5 months ago 104 MB
daocloud.io/daocloud/google_containers_pause-amd64 3.0 99e59f495ffa 13 months ago 747 kB
gcr.io/google_containers/pause-amd64 3.0 99e59f495ffa 13 months ago 747 kB
`

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