Various MD files for guides & setup
License: GNU General Public License v3.0
Various MD files for guides & setup
Refer to My YouTube channel mini series that I created for this @ https://www.youtube.com/playlist?list=PLb88NRKTvnTycKj7X0GKJ4hPoixVrQ4z6
I will try to record more videos as we move forward. :)
Hi Faisal and thank you so much for this guide. It's very useful.
I follow step by step but I can't successfully replicate it.
In my virtual lab I use CentOS 8 and MariaDB 10.5, maybe something changed and that's why I have errors and I can't achieve the Master, Slave with GTID replication.
That's why I'm asking you if there's a possibility that you can update this guide with the new versions of CentOS and MariaDB.
Thank you very much!
I'm waiting for your answer.
###########################################
This is the guide that i follow:
https://github.com/mariadb-faisalsaeed/documentation/blob/master/MariaDB%20Master%20Slave%20Setup.md
Good morning, Faisal,
I was able to start the cluster on node 1, this is the result:
MariaDB [(none)]> show global status like 'wsrep_cluster_size';
+-----------------------+-------+
| Variable_name | Value |
+-----------------------+-------+
| wsrep_cluster_size | 1 |
+-----------------------+-------+
1 rows in set (0.000 sec)
...and when I execute it in the node 2 and 3 I get the following error that I visualize after executing: journalctl -xe
[root@Galera-02 ~]# systemctl start mariadb
Job for mariadb.service failed because a fatal signal was delivered to the control process.
See "systemctl status mariadb.service" and "journalctl -xe" for details.
[root@Galera-02 ~]# journalctl -xe
-- Support: https://access.redhat.com/support
--
-- Automatic restarting of the unit mariadb.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
ago 13 12:35:50 Galera-02 systemd[1]: Stopped MariaDB 10.5.5 database server.
-- Subject: Unit mariadb.service has finished shutting down
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has finished shutting down.
ago 13 12:35:50 Galera-02 systemd[1]: Starting MariaDB 10.5.5 database server...
-- Subject: Unit mariadb.service has begun start-up
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has begun starting up.
ago 13 12:35:52 Galera-02 sh[34329]: WSREP: Recovered position 00000000-0000-0000-0000-000000000000:-1
ago 13 12:35:52 Galera-02 mariadbd[34410]: 2020-08-13 12:35:52 0 [Note] /usr/sbin/mariadbd (mysqld 10.5.5-MariaDB) starting as process 34410 ...
ago 13 12:35:52 Galera-02 mariadbd[34410]: 2020-08-13 12:35:52 0 [Warning] Could not increase number of max_open_files to more than 16384 (request: 32183)
ago 13 12:35:54 Galera-02 systemd[1]: mariadb.service: Main process exited, code=killed, status=6/ABRT
ago 13 12:35:54 Galera-02 systemd[1]: mariadb.service: Failed with result 'signal'.
ago 13 12:35:54 Galera-02 systemd[1]: Failed to start MariaDB 10.5.5 database server.
-- Subject: Unit mariadb.service has failed
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has failed.
--
-- The result is failed.
ago 13 12:35:59 Galera-02 systemd[1]: mariadb.service: Service RestartSec=5s expired, scheduling restart.
ago 13 12:35:59 Galera-02 systemd[1]: mariadb.service: Scheduled restart job, restart counter is at 308.
-- Subject: Automatic restarting of a unit has been scheduled
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Automatic restarting of the unit mariadb.service has been scheduled, as the result for
-- the configured Restart= setting for the unit.
ago 13 12:35:59 Galera-02 systemd[1]: Stopped MariaDB 10.5.5 database server.
-- Subject: Unit mariadb.service has finished shutting down
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has finished shutting down.
ago 13 12:35:59 Galera-02 systemd[1]: Starting MariaDB 10.5.5 database server...
-- Subject: Unit mariadb.service has begun start-up
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has begun starting up.
ago 13 12:36:01 Galera-02 sh[34436]: WSREP: Recovered position 00000000-0000-0000-0000-000000000000:-1
ago 13 12:36:01 Galera-02 mariadbd[34517]: 2020-08-13 12:36:01 0 [Note] /usr/sbin/mariadbd (mysqld 10.5.5-MariaDB) starting as process 34517 ...
ago 13 12:36:01 Galera-02 mariadbd[34517]: 2020-08-13 12:36:01 0 [Warning] Could not increase number of max_open_files to more than 16384 (request: 32183)
ago 13 12:36:03 Galera-02 systemd[1]: mariadb.service: Main process exited, code=killed, status=6/ABRT
ago 13 12:36:03 Galera-02 systemd[1]: mariadb.service: Failed with result 'signal'.
ago 13 12:36:03 Galera-02 systemd[1]: Failed to start MariaDB 10.5.5 database server.
-- Subject: Unit mariadb.service has failed
-- Defined-By: systemd
-- Support: https://access.redhat.com/support
--
-- Unit mariadb.service has failed.
--
-- The result is failed.
[root@Galera-02 ~]#
I feel a great frustration that I'm doing something wrong in this kind of replication?
My environment is CentOS Core 8 + The latest version of MariaDB Server and Galera Cluster.
Do I need to make any extra modifications to the CentOS servers or to the MariaDB configuration files?
Greetings.
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