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As you are using Multcast (MCAST) - could it be the case that the
switch/LAN dropped all Multicast packages for some time? As lot of
switches which are managed are dropping MCAST by default (at least
I got that feedback from customers) it could be that your switch was
either reconfigured for a time period or there was a fireware update?
Just my thoughts abou things happened at customer side.
Fabian Herschel
On 12/14/2012 06:31 AM, Muhammad Sharfuddin wrote:
> node1(ailprd1) IP:192.168.7.11 node2(ailprd2) IP:192.168.7.12
>
> Its a two node active/passive cluster, running perfectly since last
> two months, but yesterday both nodes were fenced(rebooted).
> Network connectivity b/w both nodes is perfect, and cluster is
> running fine again.
>
> Help me know the reason behind the following situation, and how can
> I avoid it happening next time:
>
> on node1(active node): Dec 13 12:31:06 ailprd1 corosync[7274]:
> [TOTEM ] A processor failed, forming new configuration. Dec 13
> 12:31:12 ailprd1 corosync[7274]: [CLM ] CLM CONFIGURATION CHANGE
> Dec 13 12:31:12 ailprd1 corosync[7274]: [CLM ] New Configuration:
> Dec 13 12:31:13 ailprd1 corosync[7274]: [CLM ] r(0)
> ip(192.168.7.11) Dec 13 12:31:13 ailprd1 corosync[7274]: [CLM ]
> Members Left: Dec 13 12:31:13 ailprd1 corosync[7274]: [CLM ] r(0)
> ip(192.168.7.12)
>
> on node2(passive node): Dec 13 12:31:05 ailprd2 corosync[7021]:
> [TOTEM ] A processor failed, forming new configuration. Dec 13
> 12:31:11 ailprd2 corosync[7021]: [CLM ] CLM CONFIGURATION CHANGE
> Dec 13 12:31:11 ailprd2 corosync[7021]: [CLM ] New Configuration:
> Dec 13 12:31:11 ailprd2 corosync[7021]: [CLM ] r(0)
> ip(192.168.7.12) Dec 13 12:31:11 ailprd2 corosync[7021]: [CLM ]
> Members Left: Dec 13 12:31:11 ailprd2 corosync[7021]: [CLM ] r(0)
> ip(192.168.7.11)
>
> for node1(ailprd1) node2 left, likewise node2(ailprd2) thinks that
> node1 left. then node2 tries to start the resources which were
> already running on node1, and both nodes were fenced.
>
> corosync.conf : totem { rrp_mode: none join: 60 max_messages:
> 20
> vsftype: none consensus: 6000 secauth: off
> token_retransmits_before_loss_const: 10 token: 5000 version: 2
>
> interface { bindnetaddr: 192.168.7.0 mcastaddr: 224.0.0.116
> mcastport: 51234 ringnumber: 0 } clear_node_high_bit: yes }
> logging
> { to_logfile: no to_syslog: yes debug: off timestamp: off
> to_stderr: no fileline: off syslog_facility: daemon
>
> }
>
> Regards, Muhammad Sharfuddin
>
>
> _______________________________________________ Linux-HA mailing
> list [email protected]
> http://lists.linux-ha.org/mailman/listinfo/linux-ha See also:
> http://linux-ha.org/ReportingProblems
>
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