Docker安装

windows

从官网下载安装包：https://docs.docker.com/docker-for-windows/install/

区分win10和win10以下，win7使用旧版程序：http://mirrors.aliyun.com/docker-toolbox/windows/docker-toolbox/?spm=5176.8351553.0.0.4bc61991tQpsnV

linux

在 CentOS 7安装docker要求系统为64位、系统内核版本为 3.10 以上

可使用uname -r命令查看系统内核信息

使用lsb_release -a查看CentOS的版本

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#查看是否已安装dicker列表
yum list installed | grep docker

#安装docker
yum -y install docker

#启动docker
systemctl start docker

#查看docker服务状态
systemctl status docker

离线安装

在官方网站下载tar压缩包：

可以先下载到本地，然后通过ftp工具上传到服务器上，或者在服务器上使用命令下载：

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wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz
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#解压
tar -zxvf docker-18.06.3-ce.tgz
#将解压出来的docker文件复制到 /usr/bin/ 目录下
cp docker/* /usr/bin/

#在/etc/systemd/system/目录下新增docker.service文件，内容如下，这样可以将docker注册为service服务

#给docker.service文件添加执行权限
chmod +x /etc/systemd/system/docker.service 

#重新加载配置文件
systemctl daemon-reload   
#启动docker
systemctl start docker
#设置开机启动
systemctl enable docker.service

#查看docker服务状态
systemctl status docker

docker.service文件内容：

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[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 --selinux-enabled=false --insecure-registry=127.0.0.1
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

–insecure-registry=127.0.0.1 此处可修改为自己的私服ip，是针对有搭建了自己私服Harbor时允许docker进行不安全的访问，否则访问将会被拒绝。