centos7安装docker

检查docker是否已经安装，如果安装则卸载

yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine \
                  docker-ce

安装yum工具

yum install -y yum-utils \
           device-mapper-persistent-data \
           lvm2 --skip-broken

然后更新本地镜像源：阿里云

yum-config-manager \
    --add-repo \
    https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    
sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo

yum makecache fast

安装docker

yum install -y docker-ce

选择关闭防火墙

# 关闭
systemctl stop firewalld

# 禁止开机启动防火墙
systemctl disable firewalld

启动docker

systemctl start docker  # 启动docker服务

systemctl stop docker  # 停止docker服务

systemctl restart docker  # 重启docker服务

配置阿里云镜像加速器

sudo mkdir -p /etc/docker sudo tee /etc/docker/daemon.json <<-'EOF' { "registry-mirrors": ["https://set5vnje.mirror.aliyuncs.com"] } EOF sudo systemctl daemon-reload sudo systemctl restart docker