Jeevan,
Jeevan Patnaik napsal(a):
Hi,
Also, both are physical machines.
On Fri, Aug 30, 2019 at 7:23 PM Jeevan Patnaik <[email protected]> wrote:
Hi,
We see the following messages almost everyday in our 2 node cluster and
resources gets migrated when it happens:
[16187] node1 corosyncwarning [MAIN ] Corosync main process was not scheduled
for 2889.8477 ms (threshold is 800.0000 ms). Consider token timeout increase.
[16187] node1 corosyncnotice [TOTEM ] c.
[16187] node1 corosyncnotice [TOTEM ] A new membership (192.168.0.1:1268) was
formed. Members joined: 2 left: 2
[16187] node1 corosyncnotice [TOTEM ] Failed to receive the leave message.
failed: 2
After setting the token timeout to 6000ms, at least the "Failed to
receive the leave message" doesn't appear anymore. But we see corosync
timeout errors:
[16395] node1 corosyncwarning [MAIN ] Corosync main process was not
scheduled for 6660.9043 ms (threshold is 4800.0000 ms). Consider token
timeout increase.
1. Why is the set timeout not in effect? It's 4800ms instead of 6000ms.
It is in effect. Threshold for pause detector is set as 0.8 * token timeout.
2. How to fix this? We have not much load on the nodes, the corosync is
already running with RT priority.
There must be something wrong. If you increase token timeout even higher
(let's say 12sec) is it still appearing or not? If so, isn't the machine
swapping (for example) or waiting for IO? If you try to run it without
RT priority, does it help?
Regards,
Honza
The following is the details of OS and packages:
Kernel: 3.10.0-957.el7.x86_64
OS: Oracle Linux Server 7.6
corosync-2.4.3-4.el7.x86_64
corosynclib-2.4.3-4.el7.x86_64
Thanks in advance.
--
Regards,
Jeevan.
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