Docker

安装docker

下载docker安装包：https://download.docker.com/linux/static/stable/x86_64/，并解压

tar -zxvf docker-19.03.5.tgz
cp docker/* /usr/bin

注册docker为service

vim /etc/systemd/system/docker.service

[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

启动

chmod +x /etc/systemd/system/docker.service

systemctl daemon-reload               #重载unit配置文件
systemctl start docker                #启动Docker
systemctl enable docker.service       #设置开机自启

systemctl status docker  #查看Docker状态
docker -v                #查看Docker版本
docker info