|
I am trying to understand how these timers interact with
each other. In a RHEL4 cluster the heartbeat defaults are; hello_timer:5 max_retries:5 deadnode_timeout:21 Meaning a heartbeat message is sent every 5 seconds, if it
fails to receive a response it will start a deadnode counter @ 21 seconds. It
will also try to send 5 more heartbeat requests. What is the interval of those retries?
If none of those requests receive a response. 5 seconds pass.. there is 15
seconds left on the deadnode timer and we try upto 5 times to get a response….
This goes on until we hit the 4th iteration of the hellotimer it tries
again upto 5 times and fails… we then hit the 21 second on the deadnode
time.. fenced takes over and wham reboot. Is my understanding of this correct???? Thanks for any help.. Michael |
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