[MXS-1438] Enhance the master down detection logic of MySQL Monitor based upon the findings of MXS-1436 Created: 2017-09-18  Updated: 2018-03-28  Resolved: 2017-10-31

Status: Closed
Project: MariaDB MaxScale
Component/s: mariadbmon
Affects Version/s: None
Fix Version/s: 2.2.0

Type: Task Priority: Major
Reporter: Johan Wikman Assignee: markus makela
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
Blocks
is blocked by MXS-1436 Investigate Replication Manager and e... Closed
Epic Link: MaxScale MRM
Sprint: 2017-43, 2017-44

 Description   

The robustness and reliability of the master down detection logic of MySQL Monitor should be at least on the level as that of the Replication Manager (this with the assumption that it currently indeed is better).

 Comments   
Comment by markus makela [ 2017-10-23 ]

Configure slave heartbeat to one second

stop slave;
 
change master to master_heartbeat_period=1;
 
start slave;

Monitor that slave heartbeat count is not increasing

show status like 'slave_received_heartbeats';

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