docker安装

1.版本

1. 选择的版本是17.03.2，
2. 安装包为ce和selinux，这俩即可。docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch.rpm和docker-ce-17.03.2.ce-1.el7.centos.x86_64.rpm
3. 下载地址为清华源
4. 系统版本为CentOS-7.4

2.安装方式

1. 由于需要，采用离线安装，所以需要很多依赖，具体离线依赖的安装方式，请参考我的博客
   yum离线安装

2. 安装所需要的依赖库之后，开始安装docker。

yum install docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch.rpm
yum install docker-ce-17.03.2.ce-1.el7.centos.x86_64.rpm

3. 安装成功之后，修改配置文件

vim /etc/systemd/system/docker.service

4. docker.service内容

[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

5. docker启动

chmod +x /etc/systemd/system/docker.service             # 添加文件权限并启动docker

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

6. 检查

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