2021-08-25 13:08:56   error  : Monitor timed out when connecting to server server1[127.0.0.1:3000] : 'Lost connection to server at 'handshake: reading initial communication packet', system error: 110'

2021-08-25 13:08:56   notice : Server changed state: server1[127.0.0.1:3000]: master_down. [Master, Running] -> [Down]

2021-08-25 13:08:56   warning: [mariadbmon] Master has failed. If master does not return in 4 monitor tick(s), failover begins.

2021-08-25 13:09:14   notice : [mariadbmon] Selecting a server to promote and replace 'server1'. Candidates are: 'server2', 'server3', 'server4'.

2021-08-25 13:09:14   warning: [mariadbmon] Slave 'server2' has gtid_strict_mode disabled. Enabling this setting is recommended. For more information, see https://mariadb.com/kb/en/library/gtid/#gtid_strict_mode

2021-08-25 13:09:14   warning: [mariadbmon] Slave 'server3' has gtid_strict_mode disabled. Enabling this setting is recommended. For more information, see https://mariadb.com/kb/en/library/gtid/#gtid_strict_mode

2021-08-25 13:09:14   warning: [mariadbmon] Slave 'server4' has gtid_strict_mode disabled. Enabling this setting is recommended. For more information, see https://mariadb.com/kb/en/library/gtid/#gtid_strict_mode

2021-08-25 13:09:14   notice : [mariadbmon] Selected 'server2'.

2021-08-25 13:09:14   warning: [mariadbmon] The relay log of 'server2' has 5 unprocessed events (Gtid_IO_Pos: 0-3000-34, Gtid_Current_Pos: 0-3000-29). To avoid data loss, failover is postponed until the log has been processed.

2021-08-25 13:09:14   warning: [mariadbmon] Not performing automatic failover. Will keep retrying with most error messages suppressed.

2021-08-25 13:09:47   notice : Server changed state: server1[127.0.0.1:3000]: master_up. [Down] -> [Master, Running]