Kubernetes部署要求Centos7.5以上版本，否则会出现kubelet无法启动或某些服务端口访问异常等问题（同时要求内核版本要升级到4.4.x以上）。
1）查看当前centos系统版本和内核版本
| 1 2 3 4 | [root@k8s-vm01 ~]# cat /etc/redhat-release CentOS Linux release 7.4.1902 (Core)
[root@k8s-vm01 ~]# uname -r |
2）备份原来的CentOS-base.repo
| 1 2 | [root@k8s-vm01 ~]# cd /etc/yum.repos.d/ [root@k8s-vm01 yum.repos.d]# cp CentOS-base.repo CentOS-base.repo_bak |
3）修改yum源。
要保证更换的yum源地址可以正常访问。如下使用阿里云的yum源，
Index of /centos/7.7.1908/http://mirrors.aliyun.com/centos/7.7.1908
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | [root@k8s-vm01 yum.repos.d]# cat /etc/yum.repos.d/CentOS-base.repo [base] name=CentOS-$releasever enabled=1 failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/7.7.1908/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.cloud.aliyuncs.com/centos/RPM-GPG-KEY-CentOS-7 [updates] name=CentOS-$releasever enabled=1 failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/7.7.1908/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 [extras] name=CentOS-$releasever enabled=1 failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/7.7.1908/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7 |
4）执行更新yum
确保下面更新操作没有报错。
| 1 | [root@k8s-vm01 yum.repos.d]# yum update -y |
5）重启系统
| 1 | [root@k8s-vm01 yum.repos.d]# init 6 |
重启后查看系统版本
| 1 2 | [root@k8s-vm01 ~]# cat /etc/redhat-release CentOS Linux release 7.7.1908 (Core) |
