Mariadb Master-Master replication

Master-1: 150.236.189.166
Master-2: 150.236.189.124

Step 1: Master-1 configuration file add following portion
log-bin
server_id=1
#replicate-do-db=replicate
bind-address=150.236.189.166

Step 2: Restart mariadb
# systemctl restart mariadb

Step 3: Create user and grant user
# Create user 'mst_mst_rep'@'%' identified by 'mst_mst_rep'
# grant replication slave on *.* to 'mst_mst_rep'@'%';
# flush privileges;

Step 4: Show master status
MariaDB [(none)]> show master status;
+--------------------+----------+--------------+------------------+
| File               | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+--------------------+----------+--------------+------------------+
| mariadb-bin.000007 |     1061 |              |                  |
+--------------------+----------+--------------+------------------+
1 row in set (0.000 sec)


Master-2 Server configuration
===============================

Step 5: Add following in configuration file
log-bin
server_id=2
#replicate-do-db=replicate
bind-address=150.236.189.124

Step 6: Create user and grant permission
# Create user 'mst_mst_rep'@'%' identified by 'mst_mst_rep'
# grant replication slave on *.* to 'mst_mst_rep'@'%';
# flush privileges;

Step 7: Execute below command
# stop slave;
# change master to master_host='150.236.189.166', master_user='mst_mst_rep', master_password='mst_mst_rep',
master_log_file='mariadb-bin.000007', master_log_pos=1061;
# start slave;

@ Show slave status
MariaDB [(none)]> show slave status \G;
*************************** 1. row ***************************
                Slave_IO_State: Waiting for master to send event
                   Master_Host: 150.236.189.166
                   Master_User: mst_mst_rep
                   Master_Port: 3306
                 Connect_Retry: 60
               Master_Log_File: mariadb-bin.000007
           Read_Master_Log_Pos: 1061

# Show master status
MariaDB [(none)]> show master status;
+--------------------+----------+--------------+------------------+
| File               | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+--------------------+----------+--------------+------------------+
| mariadb-bin.000006 |     1061 |              |                  |
+--------------------+----------+--------------+------------------+


Step 8: Go to master-1 server and execute below command

# stop slave;
# change master to master_host='150.236.189.124', master_user='mst_mst_rep', master_password='mst_mst_rep',
master_log_file='mariadb-bin.000006', master_log_pos=1061;
# start slave;

# check slave status
MariaDB [(none)]> show slave status \G;
*************************** 1. row ***************************
                Slave_IO_State: Waiting for master to send event
                   Master_Host: 150.236.189.124
                   Master_User: mst_mst_rep
                   Master_Port: 3306

MariaDB Master master replication is done!!