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Kubernetes 镜像简介

Kubernetes 是一个开源系统，用于容器化应用的自动部署、扩缩和管理。它将构成应用的容器按逻辑单位进行分组以便于管理和发现。

下载地址：https://mirrors.aliyun.com/kubernetes/

Kubernetes 镜像配置方法

基于CentOS / RHEL / Fedora系统配置方法

（1）查看系统版本信息

  1. [root@centos ~]# hostnamectl
  2.    Static hostname: centos
  3.          Icon name: computer-vm
  4.            Chassis: vm
  5.         Machine ID: f6fc8fb7991c4c518238af7c75f16046
  6.            Boot ID: baa5dae1c7614a0790ac9c3b5c0a9b7b
  7.     Virtualization: vmware
  8.   Operating System: CentOS Linux 7 (Core)
  9.        CPE OS Name: cpe:/o:centos:centos:7
  10.             Kernel: Linux 3.10.0-1160.el7.x86_64
  11.       Architecture: x86-64

（2）添加并查看 Kubernetes.repo YUM源

  1. [root@centos ~]# cat <<EOF > /etc/yum.repos.d/kubernetes.repo
  2. > [kubernetes]
  3. > name=Kubernetes
  4. > baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
  5. > enabled=1
  6. > gpgcheck=1
  7. > repo_gpgcheck=1
  8. > gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
  9. > EOF
  10. [root@centos ~]# cat /etc/yum.repos.d/kubernetes.repo
  11. [kubernetes]
  12. name=Kubernetes
  13. baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
  14. enabled=1
  15. gpgcheck=1
  16. repo_gpgcheck=1
  17. gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
  18. [root@centos ~]#

PS：由于官网未开放同步方式, 可能会有索引gpg检查失败的情况, 这时请用 yum install -y --nogpgcheck kubelet kubeadm kubectl 安装

（3）关闭或允许SELINUX安全模式

① 执行setenforce 0命令，暂时允许SELINUX安全模式放行通过。重启失效。

  1. [root@centos ~]# setenforce 0
  2. [root@centos ~]# getenforce
  3. permissive

② 编辑/etc/selinux/config配置文件，保存退出，重启生效。

  1. [root@centos ~]# vim /etc/selinux/config
  2. [root@centos ~]# cat /etc/selinux/config
  4. # This file controls the state of SELinux on the system.
  5. # SELINUX= can take one of these three values:
  6. #     enforcing - SELinux security policy is enforced.
  7. #     permissive - SELinux prints warnings instead of enforcing.
  8. #     disabled - No SELinux policy is loaded.
  9. SELINUX=disabled
  10. # SELINUXTYPE= can take one of three values:
  11. #     targeted - Targeted processes are protected,
  12. #     minimum - Modification of targeted policy. Only selected processes are protected.
  13. #     mls - Multi Level Security protection.
  14. SELINUXTYPE=targeted
  16. [root@centos ~]# getenforce
  17. Disabled

（4）安装kubernetes

  1. [root@centos ~]# yum install -y kubelet kubeadm kubectl
  2. Loaded plugins: fastestmirror
  3. Loading mirror speeds from cached hostfile
  4.  * base: mirrors.aliyun.com
  5.  * extras: mirrors.aliyun.com
  6.  * updates: mirrors.aliyun.com
  7. Package kubelet-1.22.4-0.x86_64 already installed and latest version
  8. Package kubeadm-1.22.4-0.x86_64 already installed and latest version
  9. Package kubectl-1.22.4-0.x86_64 already installed and latest version
  10. Nothing to do
  11. [root@centos ~]#

file

（5）启动kubernetes

  1. [root@centos ~]# systemctl start kubelet
  2. [root@centos ~]# systemctl enable kubelet
  3. Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.

本文转自：xuyebao

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