1. 按照docker要求系统为64位，系统内核版本为3.10以上，使用此命令查询

[root@localhost ~]# uname -r
3.10.0-1160.118.1.el7.x86_64

2. 查看是否已安装docker列表

[root@localhost ~]# yum list installed | grep docker

3. 安装docker

[root@localhost ~]# yum -y install docker

4. 手动启动docker

[root@localhost ~]# systemctl start docker

5. 查看docker状态

[root@localhost ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2024-06-04 13:43:05 CST; 31min ago
     Docs: http://docs.docker.com
 Main PID: 4791 (dockerd-current)
    Tasks: 49
   Memory: 11.0M
   CGroup: /system.slice/docker.service
           ├─4791 /usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt ...
           ├─4799 /usr/bin/docker-containerd-current -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeo...
           ├─5098 /usr/libexec/docker/docker-proxy-current -proto tcp -host-ip 0.0.0.0 -host-port 18630 -container-ip 172.17.0.2 -container-port 18630...
           └─5105 /usr/bin/docker-containerd-shim-current f34dd9057953cd36f9548c77ff0ec413a40c75ed3be69a46f6a55e4477615565 /var/run/docker/libcontaine...

6. 配置阿里云镜像加速

mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://01sy6s7g.mirror.aliyuncs.com"]
}
EOF
# 刷新系统服务
systemctl daemon-reload
# 重启docker服务
systemctl restart docker

7. 设置docker开机自动启动

[root@localhost streamsets]# systemctl enable docker.service
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.