Docker离线安装部署文档
文档基于centos 7.5; docker 19.03.5
1. 准备linux环境
1.1 先关闭防火墙** sudo systemctl stop firewalld
1.2 关闭selinux策略; vi /etc/selinux/config ; 修改完成后,重启一次系统;可以使用reboot
1.3 检查文件。 检查是否存在/etc/timezone 文件,如果没有,在后面执行docker run 命令的时候,需要删除命令中关于/etc/timezone 的映射,以免报错,只使用/etc/localtime 做时间同步。
准备工作完成。
2. 安装docker
如果没有安装包,在官网下载二进制安装包,下载地址https://download.docker.com/linux/static/stable/x86_64/
下面只需要安官网的步骤执行就可以了,官网安装网址https://docs.docker.com/engine/install/binaries/;
就下面这三步:
2.1 解压:tar xzvf docker-19.03.5.tgz
2.2 拷贝: sudo cp docker/* /usr/bin/
2.3 运行: sudo dockerd &。
这一步可以不用后台执行,即直接执行sudo dockerd,命令行界面会直接打印执行结果,查看执行结果。
如果没有异常,按 ctrl + c 强制退出,Docker 其实已经安装好了,后面会配置开机启动。
官网教程到此结束。
3. 配置docker 开机启动
这里包括两个文件(强调一下必须先执行1.2步骤,即关闭selinux,并且重启了系统)
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
docker.socket:
[Unit]
Description=Docker Socket for the API
PartOf=docker.service
[Socket]
# If /var/run is not implemented as a symlink to /run, you may need to
# specify ListenStream=/var/run/docker.sock instead.
ListenStream=/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=docker
[Install]
WantedBy=sockets.target
执行下列命令,设置docker开机自启;在docker.service, docker.socket所在的文件夹中执行下命令,设置docker开机自启。
sudo cp docker.socket /etc/systemd/system
sudo cp docker.service /etc/systemd/system
sudo systemctl daemon-reload
sudo systemctl start docker
sudo systemctl enable docker
重启一下系统,检验docker是否开机自启
sudo reboot
重启成功后,执行docker ps 检验docker是否启动成功。
到这里docker已经安装完成,并且开机自启。