配置环境

若未配置，需要执行如下

$ cat < /etc/sysctl.d/docker.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 net.ipv4.ip_forward=1 EOF

$ sysctl -p /etc/sysctl.d/docker.conf

安装配置docker

下载阿里源repo文件

$ curl -o /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo $ curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo $ yum clean all && yum makecache

yum安装

$ yum install docker-ce-20.10.12 -y

查看源中可用版本

$ yum list docker-ce --showduplicates | sort -r

安装指定版本

$ yum install -y docker-ce-18.09.9

配置源加速

https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors mkdir -p /etc/docker vi /etc/docker/daemon.json { "registry-mirrors" : [ "https://8xpk5wnt.mirror.aliyuncs.com" ] }

设置开机自启

systemctl enable docker systemctl daemon-reload

启动docker

systemctl start docker

查看docker信息

docker info

docker-client

which docker

docker daemon

ps aux |grep docker

containerd

ps aux|grep containerd systemctl status containerd