- Production Ready OpenStack：Recipes for Successful Environments
- Arthur Berezin
- 263字
- 2021-07-09 21:45:14
Installing MariaDB database
Most OpenStack projects and their components keep their persistent data and objects' status in a database. MySQL and MariaDB are the most used and tested databases with OpenStack. In our case, and in the most commonly deployed layout, controller-Neutron-compute, the database is installed on the controller node.
Run the following commands on the controller node!
How to do it...
Proceed with the following steps:
- Install MaridaDB packages as follows:
[root@controller ~]# yum install mariadb-galera-serverYum might deploy additional packages after resolving MariaDB's dependencies. A successful installation should output as follows:
Installed: mariadb-galera-server.x86_64 1:5.5.37-7.el7ost Dependency Installed: mariadb.x86_64 1:5.5.37-1.el7_0 mariadb-galera-common.x86_64 1:5.5.37-7.el7ost mariadb-libs.x86_64 1:5.5.37-1.el7_0 perl-DBD-MySQL.x86_64 0:4.023-5.el7 Complete!
- Start MariaDB database service using
systemctlcommand as a root:[root@controller ~]# systemctl start mariadb.serviceIf no output is returned, this means the command is completed successfully.
- Enable it, so it starts automatically after reboot:
[root@controller ~]# systemctl enable mariadb.serviceMariaDB maintains its own user accounts and passwords;
rootis the default administrative user name account that MariaDB uses. We should change the default password for the root account as keeping the default password is a major security treat. - Change the database root password as follows, where
new_passwordis the password we want to set:[root@controller ~]# mysqladmin -u root password new_passwordKeep this in the passwords' list; we will need to create databases for the services we will deploy in the following parts of the chapter.