系统要求

centos 的稳定版本,不支持测试版本.本章节选择的系统是CentOS-7-x86_64-DVD-1708

软件下载

下载地址如下:

wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz
tar zxf docker-18.06.3-ce.tgz
cp docker/* /usr/bin/

cat > /usr/lib/systemd/system/docker.service <<"EOF"
[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 -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
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
EOF

systemctl daemon-reload
systemctl restart docker
systemctl enable docker

确认docker安装成功

docker version

docker-version.png

如图显示,表示正确安装

docker 镜像加速器

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://xthau744.mirror.aliyuncs.com"]
}
EOF

systemctl daemon-reload
systemctl restart docker

输入docker info

docker-info.png

恭喜你,docker 安装成功!