1 首先更新系统包到最新
yum -y update
# cat >/etc/yum.repos.d/docker.repo <<-EOF
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
3 安装Docker
yum install -y docker-engine
4 启动 和设置开机自动启动
systemctl start docker.service
systemctl enable docker.service
5验证 docker安装完成
docker run hello-world
看到hello from docker 就表明安装成了!
坑:
1 运行 docker info 报如下错误:
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
设置机器开机启动的时候执行下面两条命令
编辑vim /etc/rc.d/rc.local添加下面两条命令
echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
echo 1 > /proc/sys/net/bridge/bridge-nf-call-ip6tables
vim /etc/sysctl.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-arptables = 1
重启解决
参考:https://docs.docker.com/engine/installation/linux/centos/