[Linux-HA] About motion time of Watchdog.
HIDEO YAMAUCHI
renayama19661014 at ybb.ne.jp
Sun Jul 13 21:27:58 MDT 2008
Hi All,
I confirmed it about watchdog of Heartbeat.
The environment that I confirmed has two resources in two nodes(active/standby).
The resource of one eyes checks starting VIP.
The resource of two eyes is VIP(IPaddr).
In the next sequence, a phenomenon happened.
1)I start Heartbeat.(version 2.1.3)
2)Two resources start in the first node.
3)The second node is a DC node.
4)In the first node, I do kill of a master process.
5)The second node detects the death of the first node.
6)And, in the second node, a resource of VIP of a check starts.
but watchdog does not yet exercise it in the first node.
7)Fail in the start of the check resource of VIP in the second node by a delicate timing.
Because the interval of watchdog becomes deadtime+10ms.
I turn on a delay in start time(start_delay) of the first resource, and I solve this problem.
This is delay time to wait for complete of watchdog.
Is not the interval of right watchdog shorter than deadtime?
Best Regards,
Hideo Yamauchi.
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