离线环境安装docker和docker-compose

下载软件包

• docker软件包下载地址
• docker-compose软件包下载地址

  本次安装下载的软件包版本:

  • docker-19.03.9.tgz
  • docker-compose 1.24.1

关闭防火墙

本次安装使用centos7.5操作系统.

# 关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
# 查看防火墙状态
systemctl status firewalld

# 关闭selinux
setenforce 0
vim /etc/selinux/config
# 查看selinux状态
/usr/sbin/sestatus -v

安装docker

• 准备docker.service，docker服务化配置文件

  [Unit]
  Description=Docker Application Container Engine
  Documentation=https://docs.docker.com
  After=network-online.target firewalld.service
  Wants=network-online.target
  

[Service]
Type=notify

the default is not to use systemd for cgroups because the delegate issues still

exists and systemd currently does not support the cgroup feature set required

for containers run by docker

ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID

Having non-zero Limit*s causes performance problems due to accounting overhead

in the kernel. We recommend using cgroups to do container-local accounting.

LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

Uncomment TasksMax if your systemd version supports it.

Only systemd 226 and above support this version.

#TasksMax=infinity
TimeoutStartSec=0

set delegate yes so that systemd does not reset the cgroups of docker containers

Delegate=yes

kill only the docker process, not all processes in the cgroup

KillMode=process

restart the docker process if it exits prematurely

Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

- 依次执行命令安装
```bash
# 解压tar包
tar -xvf docker-19.03.9.tgz
# 将docker目录移到/usr/bin目录下
cp docker/* /usr/bin/
# 将docker.service 移到/etc/systemd/system/ 目录
cp docker.service /etc/systemd/system/
# 添加文件权限
chmod +x /etc/systemd/system/docker.service
# 重新加载配置文件
systemctl daemon-reload
# 启动docker
systemctl start docker
# 设置开机自启
systemctl enable docker.service
# 验证docker安装是否成功
docker -v

安装docker-compose

# 添加文件权限
chmod +x /xxx/docker-compose
# 创建软链接
ln -s /xxx/docker-compose /usr/bin/docker-compose
# 验证安装是否成功
docker-compose --version

配置普通用户可以使用docker命令

# 创建用户组,默认安装docker可能已经创建了
sudo groupadd docker
# 示例
sudo usermod -aG docker testuser
# 重新服务再登录即可使用docker命令
sudo systemctl restart docker