kubernetes pod一直是ContainerCreating,READY是0/1

男娘i 2022-10-10 09:39 211阅读 0赞

### 目录 ###

*   *  背景
     *  解决方案

## 背景 ##

*  新创建的nginx-deployment，情况如下所示。

[root@localhost software]# kubectl get pods
    NAME                              READY     STATUS              RESTARTS   AGE
    nginx-deployment-94093859-51185   0/1       ContainerCreating   0          11m
    nginx-deployment-94093859-8744s   0/1       ContainerCreating   0          11m
    nginx-deployment-94093859-zvbb1   0/1       ContainerCreating   0          11m

*  状态一直是`ContainerCreating` ,`READY`是`0/1` 。

## 解决方案 ##

*  查看pod详情，使用命令 `kubectl describe pod nginx-deployment-94093859-51185`（`nginx-deployment-94093859-51185`是我pod名称）。

[root@localhost software]# kubectl describe pod nginx-deployment-94093859-51185
    Name:		nginx-deployment-94093859-51185
    Namespace:	default
    Node:		127.0.0.1/127.0.0.1
    Start Time:	Sat, 26 Jun 2021 21:30:06 -0400
    Labels:		app=nginx
    		pod-template-hash=94093859
    		track=stable
    Status:		Pending
    IP:		
    Controllers:	ReplicaSet/nginx-deployment-94093859
    Containers:
      nginx:
        Container ID:	
        Image:		nginx:1.7.9
        Image ID:		
        Port:		80/TCP
        State:		Waiting
          Reason:		ContainerCreating
        Ready:		False
        Restart Count:	0
        Volume Mounts:
          /var/run/secrets/kubernetes.io/serviceaccount from default-token-k3tq8 (ro)
        Environment Variables:	<none>
    Conditions:
      Type		Status
      Initialized 	True 
      Ready 	False 
      PodScheduled 	True 
    Volumes:
      default-token-k3tq8:
        Type:	Secret (a volume populated by a Secret)
        SecretName:	default-token-k3tq8
    QoS Class:	BestEffort
    Tolerations:	<none>
    Events:
      FirstSeen	LastSeen	Count	From			SubObjectPath	Type		Reason		Message
      ---------	--------	-----	----			-------------	--------	------		-------
      12m		12m		1	{default-scheduler }			Normal		Scheduled	Successfully assigned nginx-deployment-94093859-51185 to 127.0.0.1
      12m		1m		7	{kubelet 127.0.0.1}			Warning		FailedSync	Error syncing pod, skipping: failed to "StartContainer" for "POD" with ErrImagePull: "image pull failed for registry.access.redhat.com/rhel7/pod-infrastructure:latest, this may be because there are no credentials on this request.  details: (open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory)"
    
      11m	7s	50	{kubelet 127.0.0.1}		Warning	FailedSync	Error syncing pod, skipping: failed to "StartContainer" for "POD" with ImagePullBackOff: "Back-off pulling image \"registry.access.redhat.com/rhel7/pod-infrastructure:latest\""

有一个错误`"image pull failed for registry.access.redhat.com/rhel7/pod-infrastructure:latest, this may be because there are no credentials on this request. details: (open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory)"`。

*  查看`/etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt`后发现是个软链接。  
    ![在这里插入图片描述][20210627095001773.png]
 *  并且没有 `/etc/rhsm/ca/redhat-uep.pem`文件。
 *  尝试直接`docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest`也拉不下来，也会报找不到文件。
 *  只要我们能生成`/etc/rhsm/ca/redhat-uep.pem`文件，问题也就迎刃而解了。
 *  有的人用`yum install *rhsm*`解决了问题，但是在我的电脑上不行，所以下面是另一个方案。
    
     *  1、下载python-rhsm-certificates-1.19.10-1.el7\_4.x86\_64.rpm文件
        
            wget http://mirror.centos.org/centos/7/os/x86_64/Packages/python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm
     *  2、生成`/etc/rhsm/ca/redhat-uep.pem`文件
        
            rpm2cpio python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm | cpio -iv --to-stdout ./etc/rhsm/ca/redhat-uep.pem | tee /etc/rhsm/ca/redhat-uep.pem
 *  再次拉取`registry.access.redhat.com/rhel7/pod-infrastructure:latest`，执行命令 `docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest`。  
    ![在这里插入图片描述][202106271004063.png]
 *  再次查看pod状态，已经正常了，如下图所示。  
    ![在这里插入图片描述][20210627100610354.png]
 *  docker进程运行状态如下所示。  
    ![在这里插入图片描述][20210627100917938.png]

[20210627095001773.png]: /images/20221005/b022db41cac146db83fe430d7b9a26f5.png
[202106271004063.png]: /images/20221005/e130dda94ec9446882726c54e859730f.png
[20210627100610354.png]: /images/20221005/038aedc2c4a543b9b59da2f19aaf3b5d.png
[20210627100917938.png]: /images/20221005/c3b279ef3f714640b5dc3595ef9e1073.png