查看centos内核版本
[root@VM-24-14-centos ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
CentOS 7 (使用yum进行安装)
# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# Step 3: 更新并安装 Docker-CE
sudo yum makecache fast
sudo yum -y install docker-ce
# Step 4: 开启Docker服务
sudo service docker start
注意：其他注意事项在下面的注释中
# 官方软件源默认启用了最新的软件，您可以通过编辑软件源的方式获取各个版本的软件包。例如官方并没有将测试版本的软件源置为可用，你可以通过以下方式开启。同理可以开启各种测试版本等。
# vim /etc/yum.repos.d/docker-ce.repo
# 将 [docker-ce-test] 下方的 enabled=0 修改为 enabled=1
#
# 安装指定版本的Docker-CE:
# Step 1: 查找Docker-CE的版本:
# yum list docker-ce.x86_64 --showduplicates | sort -r
# Loading mirror speeds from cached hostfile
# Loaded plugins: branch, fastestmirror, langpacks
# docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
# docker-ce.x86_64 17.03.1.ce-1.el7.centos @docker-ce-stable
# docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
# Available Packages
# Step2 : 安装指定版本的Docker-CE: (VERSION 例如上面的 17.03.0.ce.1-1.el7.centos)
# sudo yum -y install docker-ce-[VERSION]
# 注意：在某些版本之后，docker-ce安装出现了其他依赖包，如果安装失败的话请关注错误信息。例如 docker-ce 17.03 之后，需要先安装 docker-ce-selinux。
# yum list docker-ce-selinux- --showduplicates | sort -r
# sudo yum -y install docker-ce-selinux-[VERSION]
# 通过经典网络、VPC网络内网安装时，用以下命令替换Step 2中的命令
# 经典网络：
# sudo yum-config-manager --add-repo http://mirrors.aliyuncs.com/docker-ce/linux/centos/docker-ce.repo
# VPC网络：
# sudo yum-config-manager --add-repo http://mirrors.could.aliyuncs.com/docker-ce/linux/centos/docker-ce.repo
版本安装校验: docker version
[root@VM-24-14-centos ~]# docker version
Client: Docker Engine - Community #客户端的版本
Version: 20.10.11
API version: 1.41
Go version: go1.16.9
Git commit: dea9396
Built: Thu Nov 18 00:38:53 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community #服务端的版本
Engine:
Version: 20.10.11
API version: 1.41 (minimum version 1.12)
Go version: go1.16.9
Git commit: 847da18
Built: Thu Nov 18 00:37:17 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.12
GitCommit: 7b11cfaabd73bb80907dd23182b9347b4245eb5d
runc:
Version: 1.0.2
GitCommit: v1.0.2-0-g52b36a2
docker-init:
Version: 0.19.0
GitCommit: de40ad0
查看网络信息: ip addr
[root@VM-24-14-centos ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 52:54:00:0f:a8:71 brd ff:ff:ff:ff:ff:ff
inet 10.0.24.14/22 brd 10.0.27.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fe0f:a871/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default #docker0 虚拟网桥
link/ether 02:42:ec:fc:73:db brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
设置开启启动
查看是否加入开机启动项 systemctl list-unit-files |grep xxx
[root@VM-24-14-centos ~]# systemctl list-unit-files |grep docker
docker.service disabled
docker.socket disabled
[root@VM-24-14-centos ~]# systemctl enable docker.service #设置为自启动服务
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@VM-24-14-centos ~]# systemctl status docker #查看状态
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2021-11-22 11:19:19 CST; 9min ago
Docs: https://docs.docker.com
Main PID: 14752 (dockerd)
CGroup: /system.slice/docker.service
└─14752 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.062613511+08:00" level=info msg="scheme \"unix\...e=grpc
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.062630573+08:00" level=info msg="ccResolverWrap...e=grpc
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.062640973+08:00" level=info msg="ClientConn swi...e=grpc
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.112754837+08:00" level=info msg="Loading contai...tart."
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.210498195+08:00" level=info msg="Default bridge...dress"
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.246340397+08:00" level=info msg="Loading contai...done."
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.272172619+08:00" level=info msg="Docker daemon"....10.11
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.272271775+08:00" level=info msg="Daemon has com...ation"
Nov 22 11:19:19 VM-24-14-centos systemd[1]: Started Docker Application Container Engine.
Nov 22 11:19:19 VM-24-14-centos dockerd[14752]: time="2021-11-22T11:19:19.298526658+08:00" level=info msg="API listen on ....sock"
Hint: Some lines were ellipsized, use -l to show in full.
配置加速镜像
1. 安装／升级Docker客户端
推荐安装1.10.0以上版本的Docker客户端，参考文档docker-ce
2. 配置镜像加速器
针对Docker客户端版本大于 1.10.0 的用户
您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器
# xxxx 替换成自己的加速地址，加速页面：https://cr.console.aliyun.com/cn-beijing/instances/mirrors
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://xxxx.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
升级和卸载docker
# 升级
yum -y upgrade docker-ce
# 卸载
yum remove docker-ce
# 删除Images, containers, volumes, or customized configuration files
rm -rf /var/lib/docker
第一种、安装docker-compose
- 安装epel源
yum install -y epel-release
2.安装docker-compose
yum install -y docker-compose
第二种、安装docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
docker-compose --version
