1. 添加mariadb源

cat <<EOF > /etc/yum.repos.d/mariadb.repo
[mariadb]
name = MariaDB
baseurl = http://mirrors.aliyun.com/mariadb/yum/10.4/centos7-amd64/
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
enabled=1
gpgcheck=1
EOF

2. 更新缓存

yum clean all
yum makecache
yum repolist

3.显示可安装的版本

#这个可以看版本号
yum search mariadb --showduplicates
或
yum search mariadb

4. 安装

yum -y install MariaDB-server MariaDB-client

5. 修改数据存储路径

mkdir -p /data/mysql
cp -r /var/lib/mysql/*　/data/mysql/
chown -R mysql:mysql /data/mysql

vim /etc/my.cnf

[client]
socket = /data/mysql/mysql.sock
[mysqld]
datadir = /data/mysql
socket = /data/mysql/mysql.sock

6. 启动

systemctl enable mariadb --now

7. 设置密码

mysql_secure_installation

8. 设置开机启动

systemctl enable mariadb

9. 启动 mariadb

systemctl start mariadb

10. 安装错误时的卸载操作

 rpm -aq|grep Maria*
 yum -y remove Maria*