创建单机Kubenetes集群环境后，Pod一直处于ContainerCreating状态：
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[root@VM_0_3_centos]# kubectl get pods
NAME READY STATUS RESTARTS AGE
myweb-pgn80 0/1 ContainerCreating 0 10m
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查看Pod的Event记录
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[root@VM_0_3_centos]# kubectl describe pod myweb-pgn80
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问题
无法创建的原因提示：
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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)" |
查找缺失的文件，显示是一个软连接，链接目标是/etc/rhsm:
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[root@VM_0_3_centos conf.d]# ll /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt
lrwxrwxrwx 1 root root 27 Jun 10 11:37 /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt -> /etc/rhsm/ca/redhat-uep.pem
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尝试手动拉取镜像
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[root@VM_0_3_centos]# docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest
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提示：
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open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory |
依据google的解决办法，尝试使用
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[root@VM_0_3_centos]# yum install *rhsm*
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package python-rhsm-1.19.10-1.el7_4.x86_64 is obsoleted by subscription-manager-rhsm-1.20.11-1.el7.centos.x86_64 which is already installed
Package subscription-manager-rhsm-1.20.11-1.el7.centos.x86_64 already installed and latest version
Package python-rhsm-certificates-1.19.10-1.el7_4.x86_64 is obsoleted by subscription-manager-rhsm-certificates-1.20.11-1.el7.centos.x86_64 which is already installed
Package subscription-manager-rhsm-certificates-1.20.11-1.el7.centos.x86_64 already installed and latest version
Nothing to do
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问题出在目标的两个包被subscription-manager-rhsm-certificates-1.20.11-1.el7.centos.x86_64 和subscription-manager-rhsm-1.20.11-1.el7.centos.x86_64替代。
解决办法
删除已经安装的这两个包，手动安装目标包
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[root@VM_0_3_centos]# yum remove *rhsm*
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下载目标包，注意版本
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#wget ftp://ftp.icm.edu.pl/vol/rzm6/linux-scientificlinux/7.4/x86_64/os/Packages/python-rhsm-certificates-1.19.9-1.el7.x86_64.rpm
#wget ftp://ftp.icm.edu.pl/vol/rzm6/linux-scientificlinux/7.4/x86_64/os/Packages/python-rhsm-1.19.9-1.el7.x86_64.rpm
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然后执行安装命令
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[root@VM_0_3_centos centos]# rpm -ivh *.rpm
warning: python-rhsm-1.19.9-1.el7.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 192a7d7d: NOKEY
Preparing... ################################# [100%]
Updating / installing...
1:python-rhsm-certificates-1.19.9-1################################# [ 50%]
2:python-rhsm-1.19.9-1.el7 ################################# [100%]
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重新拉取镜像
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[root@VM_0_3_centos centos]#docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest
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查看POD状态
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[root@VM_0_3_centos centos]# kubectl get pods
NAME READY STATUS RESTARTS AGE
mysql-m4n1g 1/1 Running 0 9h
myweb-pgn80 1/1 Running 0 9h
myweb-z7q4v 1/1 Running 0 9h
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解决问题