2018-07-07 08:22:23   warning: [mariadbmon] The previous master server 'server1' is no longer a valid master because it is in read-only mode. Selecting new master.

2018-07-07 08:22:23   warning: [mariadbmon] 'server1' is not a valid master candidate because it is in read_only mode.

2018-07-07 08:22:23   warning: [mariadbmon] No valid master servers found.

2018-07-07 08:22:23   error  : [mariadbmon] No Master can be determined

2018-07-07 08:22:23   notice : Server changed state: server1[192.168.121.17:3306]: lost_master. [Master, Running] -> [Running]

2018-07-07 08:22:23   notice : Server changed state: server2[192.168.121.246:3306]: lost_slave. [Slave, Running] -> [Running]

2018-07-07 08:22:23   notice : Server changed state: server3[192.168.121.99:3306]: lost_slave. [Slave, Running] -> [Running]

2018-07-07 08:22:23   notice : Server changed state: server4[192.168.121.197:3306]: lost_slave. [Slave, Running] -> [Running]