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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

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

(2)添加并查看 Kubernetes.repo YUM源

[root@centos ~]# cat <<EOF > /etc/yum.repos.d/kubernetes.repo
> [kubernetes]
> name=Kubernetes
> baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
> enabled=1
> gpgcheck=1
> repo_gpgcheck=1
> gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
> EOF
[root@centos ~]# cat /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
[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

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

[root@centos ~]# setenforce 0
[root@centos ~]# getenforce
permissive

编辑/etc/selinux/config配置文件,保存退出,重启生效。

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

(4)安装kubernetes

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

(5)启动kubernetes

[root@centos ~]# systemctl start kubelet
[root@centos ~]# systemctl enable kubelet
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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