[Linux-HA] Change in hostname

[Andrew Beekhof]

On 6/13/07, Jaime Medrano <overflow5 at gmail.com> wrote:
> Hi.
>
> I'm having problems when a one of the nodes changes its hostname (uname -n).
>
> In first place, if the hostname is changed the cib doesn't get updated so
> the '#uname' attribute is still seen as the old one in all the nodes of the
> cluster. This is a minor problem, since the cluster keeps working as if the
> hostname wasn't been changed.
>
> The major problem arises when the node with the hostname changed reboots (a
> heartbeat reload causes the same effect).
>
> When this happens, that node can't see the others and no one can see it
> either. In the logs there are messages like these:
>
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_slave_all message (84)
> from i300b: not in our membership
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (86)
> from i300b: not in our membership
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_replace message (88) from
> i300b: not in our membership
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (8a)
> from i300b: not in our membership
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (8b)
> from i300b: not in our membership
> Jun 13 16:25:44 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (8c)
> from i300b: not in our membership
> Jun 13 16:25:45 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (8f)
> from i300b: not in our membership
> Jun 13 16:25:45 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (90)
> from i300b: not in our membership
> Jun 13 16:25:46 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (92)
> from i300b: not in our membership
> Jun 13 16:25:46 p8100 cib: [19345]: WARN:
> cib_peer_callback:callbacks.cDiscarding cib_apply_diff message (93)
> from i300b: not in our membership
> (i300b is the new hostname)
>
> Shouldn't be the uuid used instead the hostname in every places to avoid
> this kind of problems?

it wont help much if the machine isn't reported as being part of the
cluster which is what the CIB is complaining about here

>
> Regards,
> Jaime Medrano.
> _______________________________________________
> Linux-HA mailing list
> Linux-HA at lists.linux-ha.org
> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
>