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

zulucloud zulucloud at mailbox.org
Wed Oct 7 11:13:40 EDT 2015

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...

>> 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?


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