本文主要是介绍centos 系统yum 安装 mariadb，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
安装很简单 直接执行命令就行了
yum -y install mariadb-server mariadb
但是之前已经在这里安装了mariadb 这个数据库了，现在一直无法启动，那么又重新安装
发现还是无法启动，那肯定是因为没有卸载干净，现在我们就来说说如何将原来的mariadb卸载干净然后再重新安装
第一步：移除相关的安装包，先执行 yum remove mariadb
[root@openstack2 my.cnf.d]# yum remove mariadb
Loaded plugins: fastestmirror
Resolving Dependencies
--> Running transaction check
---> Package mariadb.x86_64 3:10.1.20-2.el7 will be erased
--> Processing Dependency: mysql(x86-64) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Processing Dependency: mysql-compat-client(x86-64) for package: 3:mariadb-server-10.1.20-2.el7.x86_64
--> Running transaction check
---> Package mariadb-server.x86_64 3:10.1.20-2.el7 will be erased
--> Finished Dependency Resolution第二步：查询mariadb 相关的数据包，然后删除 rpm -qa | grep 'mariadb'
[root@openstack2 my.cnf.d]# rpm -qa | grep 'mariadb'
mariadb-config-10.1.20-2.el7.x86_64
mariadb-libs-10.1.20-2.el7.x86_64
mariadb-common-10.1.20-2.el7.x86_64
mariadb-errmsg-10.1.20-2.el7.x86_64
[root@openstack2 my.cnf.d]# rm -f mariadb-config-10.1.20-2.el7.x86_64
[root@openstack2 my.cnf.d]# rm -f mariadb-libs-10.1.20-2.el7.x86_64
[root@openstack2 my.cnf.d]# rm -f mariadb-common-10.1.20-2.el7.x86_64
[root@openstack2 my.cnf.d]# rm -f mariadb-errmsg-10.1.20-2.el7.x86_64
第三步：删除相关的 /etc/my.cnf 文件 和 /etc/my.cnf.d 文件夹
[root@openstack2 my.cnf.d]# rm -f /etc/my.cnf
[root@openstack2 my.cnf.d]# rm -rf /etc/my.cnf.d/
第四步：安装数据库 yum -y install mariadb-server mariadb
[root@openstack2 etc]# yum -y install mariadb-server mariadb
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
epel | 4.7 kB 00:00:00
extras | 2.9 kB 00:00:00
openstack | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package mariadb.x86_64 3:10.1.20-2.el7 will be installed
---> Package mariadb-server.x86_64 3:10.1.20-2.el7 will be installed
--> Finished Dependency Resolution第四步：启动mariadb
systemctl start mariadb
systemctl status mariadb
[root@openstack2 etc]# systemctl status mariadb
● mariadb.service - MariaDB 10.1 database serverLoaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled)Active: active (running) since Mon 2024-08-26 23:40:03 EDT; 12min agoProcess: 12864 ExecStartPost=/usr/libexec/mysql-check-upgrade (code=exited, status=0/SUCCESS)Process: 12787 ExecStartPre=/usr/libexec/mysql-prepare-db-dir %n (code=exited, status=0/SUCCESS)Process: 12764 ExecStartPre=/usr/libexec/mysql-check-socket (code=exited, status=0/SUCCESS)Main PID: 12823 (mysqld)Status: "Taking your SQL requests now..."CGroup: /system.slice/mariadb.service└─12823 /usr/libexec/mysqld --basedir=/usr
上面就是mariadb 卸载的全过程，和安装的过程
希望对你有所帮助！
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