[ClusterLabs] Antw: group resources not grouped ?!?

Dejan Muhamedagic dejanmm at fastmail.fm
Thu Oct 8 04:37:17 EDT 2015

On Wed, Oct 07, 2015 at 05:13:40PM +0200, zulucloud wrote:
> On 10/07/2015 04:46 PM, Ulrich Windl wrote:
> >>>>zulucloud <zulucloud at mailbox.org> schrieb am 07.10.2015 um 16:12 in Nachricht
> ><5615284E.8050406 at mailbox.org>:
> >>Hi,
> >>i got a problem i don't understand, maybe someone can give me a hint.
> >>
> >>My 2-node cluster (named ali and baba) is configured to run mysql, an IP
> >>for mysql and the filesystem resource (on drbd master) together as a
> >>GROUP. After doing some crash-tests i ended up having filesystem and
> >>mysql running happily on one host (ali), and the related IP on the other
> >>(baba) .... although, the IP's not really up and running, crm_mon just
> >>SHOWS it as started there. In fact it's nowhere up, neither on ali nor
> >>on baba.
> >
> >Then it's most likely a bug in the resource agent. To make sure, try "crm resource reprobe" and be patient after that for some seconds. Then recheck the displayed status.
> In the meantime i already did a "resource cleanup res_hamysql_ip".
> The failcounts etc. disappeared. After that a "start gr_mysqlgroup"
> started everything without a hassle on the correct node.
> >>
> >>crm_mon shows that pacemaker tried to start it on baba, but gave up
> >>after fail-count=1000000.
> >
> >This could mean: Multiple start attempty failed, as did stop attempts, so the cluster thinks it might be running. It looks very much like a configuration problem to me.
> >
> >>
> >>Q1: why doesn't pacemaker put the IP on ali, where all the rest of it's
> >>group lives?
> >
> >See the log files in detail.
> Well, they're quite verbose and a little bit cryptic...;) I didn't
> find anything what could enlighten that for me...

If you're using crmsh, you can at least let history filter out
the stuff you don't want to look at. There's an introduction on
the feature here:




> >
> >>Q2: why doesn't pacemaker try to start the IP on ali, after max
> >>failcount had been reached on baba?
> >
> >Do you have fencing enabled?
> No. These are 2 virtual machines running together with some other
> vm's on 2 physical VMWare servers. Could you give me a suggestion on
> how to implement fencing in that situation?
> thx
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