利用docker搭建MySQL集群

一 准备好虚拟机，安装docker

1 关闭防火墙和SELINUX

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0

2 添加docker的repo源，并下载docker

[root@localhost ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
-bash: yum-config-manager: 未找到命令 //一直显示找不到命令可以用wget解决



[root@localhost ~]# wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

[root@localhost yum.repos.d]# mv /root/docker-ce.repo ./

[root@localhost yum.repos.d]# yum install docker-ce -y

二  安装mysql镜像

1 启动docker

[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl status docker

2 拉去mysql镜像(mysql 8.0版本)

镜像连接  https://docker.aityp.com/image/docker.io/mysql:8.0（里面含有多个镜像）

[root@localhost ~]# docker pull swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/mysql:8.0

查看镜像 

[root@localhost ~]# docker images
REPOSITORY                                                 TAG       IMAGE ID       CREATED        SIZE
swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/mysql   8.0       1eba4c9bcaa8   3 months ago   567MB

[root@localhost ~]# docker tag  swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/mysql:8.0  docker.io/mysql:8.0

[root@localhost ~]# docker rmi swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/mysql:8.0

[root@localhost ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
mysql        8.0       1eba4c9bcaa8   3 months ago   567MB

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