Using MySQL/MariaDB

Start/Stop MySQL/MariaDB service

[RHEL] for MariaDB: :

service mariadb start
service mariadb stop

[RHEL] for MySQL:

service mysqld start
service mysqld stop

[SLES] and [Ubuntu]: :

service mysql start
service mysql stop

[SLE15] : :

systemctl start mariadb
systemctl stop mariadb

Refer to https://www.mariadb.org/ for the latest documentation.

Using mysql, connect to the xcat database: :
```
mysql -u root -p
```
List the hosts and users which managed by this xcat MN: :
```
MariaDB> SELECT host, user FROM mysql.user;
```
List the databases: :
```
MariaDB> SHOW DATABASES;
```
Use the xcatdb: :
```
MariaDB> use xcatdb;
```
List all the tables: :
```
MariaDB [xcatdb]> SHOW TABLES;
```

Show the entries in the nodelist table: :

MariaDB [xcatdb]> select * from nodelist;