查看linux版本
$ cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
更新yum
$ yum update
安装需要的软件包， yum-util 提供yum-config-manager功能，另外两个是devicemapper驱动依赖的
$ yum install -y yum-utils device-mapper-persistent-data lvm2
添加源
$ yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
查看所有安装包,由于repo中默认只开启stable仓库，故这里安装的是最新稳定版 18.06.0.ce
$ yum list docker-ce --showduplicates | sort -r
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
安装docker,yum install docker-ce-加上版本号,例如:18.03.0.ce
$ yum install docker-ce-18.03.0.ce
关闭防火墙
$ systemctl stop firewalld.service
禁止防火墙开机启动
$ systemctl disable firewalld.service
启动并加入开机启动
$ systemctl start docker
$ systemctl enable docker
验证安装是否成功(有client和service两部分表示docker安装启动都成功了)
$ docker version
Client:
Version: 18.03.0-ce
API version: 1.37
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:09:15 2018
OS/Arch: linux/amd64
Experimental: false
Orchestrator: swarm
Server:
Engine:
Version: 18.03.0-ce
API version: 1.37 (minimum version 1.12)
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:13:03 2018
OS/Arch: linux/amd64
Experimental: false
配置日志大小限制
1.新建/etc/docker/daemon.json，若有就不用新建了。添加log-dirver和log-opts参数，样例如下：
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://3o6lhri3.mirror.aliyuncs.com"],
"log-driver":"json-file",
"log-opts": {"max-size":"50m", "max-file":"5"}
}
EOF
sudo systemctl daemon-reload & systemctl restart docker
2.然后重启docker的守护线程
$ systemctl daemon-reload && systemctl restart docker
懒人脚本
#!/bin/bash -v
yum update -y
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum install -y docker-ce-18.03.0.ce
systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl enable docker
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://3o6lhri3.mirror.aliyuncs.com"],
"log-driver":"json-file",
"log-opts": {"max-size":"50m", "max-file":"5"}
}
EOF
reboot
