Chapter 9. Start MariaDB Locally and Setup Accounts

Procedure

1. Start the MariaDB service and set up base accounts ALL controller nodes.

   mysqld_safe --wsrep-provider=none &
   MYSQL_PASSWORD=$(/bin/hiera -c /etc/puppet/hiera.yaml mysql::server::root_password)
   CLUSTERCHECK_PASSWORD=$(/bin/hiera -c /etc/puppet/hiera.yaml mysql_clustercheck_password)
   /usr/bin/mysql -u root -p -e "CREATE USER 'clustercheck'@'localhost';"
   /usr/bin/mysql -u root -p -e "GRANT PROCESS ON *.* TO 'clustercheck'@'localhost' IDENTIFIED BY '$CLUSTERCHECK_PASSWORD';"
   /usr/bin/mysqladmin -u root password $MYSQL_PASSWORD
   mysqladmin -u root -p$MYSQL_PASSWORD shutdown

   The director creates a root password and stores it in /root/.my.cnf.

2. On ALL controller nodes, ensure that the mysql process is not running.

   [root@overcloud-controller-0]# ps -ef | grep mysql
   [root@overcloud-controller-1]# ps -ef | grep mysql
   [root@overcloud-controller-2]# ps -ef | grep mysql

3. Uncomment the wsrep_cluster_address and wsrep_provider settings in /etc/my.cnf.d/galera.cnf on ALL controller nodes.

   wsrep_cluster_address = gcomm://overcloud-controller-0,overcloud-controller-1,overcloud-controller-2
   wsrep_provider = /usr/lib64/galera/libgalera_smm.so

4. On one of the nodes in the cluster, bring the Galera cluster up with Pacemaker.

   [root@overcloud-controller-0]# pcs resource manage galera
   [root@overcloud-controller-0]# pcs resource cleanup galera

5. Make sure that cluster is running.

   [root@overcloud-controller-0]# pcs status | grep -C3 galera

   If the cluster is running, the output should look like this:

   Master/Slave Set: galera-master [galera]
        Masters: [ overcloud-controller-0 overcloud-controller-1 overcloud-controller-2 ]