一、环境准备
1.1 关闭防火墙，并且修改selinux机制。
[root@localhost ~]# systemctl stop firewalld \\停止firewalld服务
[root@localhost ~]# systemctl disable firewalld \\开机不自启
[root@localhost ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
[root@localhost ~]# 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 two values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
[root@localhost ~]# reboot \\重启一下
1.2 配置yum源并且更新rpm包
[root@localhost ~]# mkdir -p /etc/yum.repos.d/bak
[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# mv *.* bak/
[root@localhost yum.repos.d]# ls
bak
[root@localhost yum.repos.d]# wget https://mirrors.aliyun.com/repo/Centos-7.repo
--2022-04-11 13:29:23-- https://mirrors.aliyun.com/repo/Centos-7.repo
Resolving mirrors.aliyun.com (mirrors.aliyun.com)... 39.96.118.189, 39.96.118.196, 39.96.118.195, ...
Connecting to mirrors.aliyun.com (mirrors.aliyun.com)|39.96.118.189|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2523 (2.5K) [application/octet-stream]
Saving to: ‘Centos-7.repo’
******省略******
[root@localhost yum.repos.d]# yum -y clean all && yum makecache \\清楚缓存
Loaded plugins: fastestmirror
Cleaning repos: base extras updates
Cleaning up everything
******省略******
[root@localhost yum.repos.d]#yum update \\更新所有的包
1.3 卸载docker以及依赖包。
[root@localhost ~]# yum -y remove docker docker-client docker-cli
[root@localhost ~]# yum -y remove ent-latest \
> docker-common \
> docker-latest \
> docker-latest-logrotate \
> docker-logrotate \
> docker-selinux \
> docker-engine-selinux \
> docker-engine
1.4 安装gcc和gcc-c++。
[root@localhost ~]# yum -y install gcc gcc-c++
二、安装
2.1 安装依赖包。
[root@localhost ~]# yum install -y yum-utils device-mapper-persistent-data lvm2
2.2 设置镜像仓库
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
或
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
[root@localhost ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
2.3 更新yum索引。
[root@localhost ~]# yum makecache fast
Loaded plugins: fastestmirror
base | 3.6 kB 00:00
docker-ce-stable | 3.5 kB 00:00
extras | 2.9 kB 00:00
updates | 2.9 kB 00:00
(1/2): docker-ce-stable/7/x86_64/primary_db | 75 kB 00:00
(2/2): docker-ce-stable/7/x86_64/updateinfo | 55 B 00:00
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Metadata Cache Created
2.4 安装docker。
[root@localhost ~]# yum -y install docker-ce
2.5 查看docker版本。
[root@localhost ~]# docker -v
Docker version 20.10.14, build a224086 \\后面的20.10.14是docker的版本号
[root@localhost ~]# yum -y list docker-ce
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
Installed Packages
docker-ce.x86_64 @docker-ce-stable 3:20.10.14-3.el7
2.6 配置docker镜像加速。
1、登录阿里云找到容器服务
https://cr.console.aliyun.com/?spm=a2c4g.11186623.2.7.5daa7627kOSW0h
2、找到镜像加速地址
3、配置使用
sudo mkdir -p /etc/docker
#创建一个目录
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://gbdey2h8.mirror.aliyuncs.com"]
}
EOF
#编写配置文件
2.7 配置docker服务。
[root@localhost ~]# ystemctl daemon-reload
[root@localhost ~]# systemctl enable docker \\docker的开机自启服务
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@localhost ~]# systemctl restart docker \\重启服务
[root@localhost ~]# ps -aux |grep docker \\查看docker的进程
root 18424 0.5 5.1 1079024 50052 ? Ssl 13:55 0:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root 18571 0.0 0.1 112664 972 pts/0 R+ 13:55 0:00 grep --color=auto docker
三、docker的命令使用
直接访问bilibili网站里面有更多的命令讲解内容：https://www.bilibili.com/read/cv11960802
