[Pacemaker] cloned ping ressource with multiple target hosts fails

[Moritz Krinke]

Hello,

found the problem myself, if anyone wonders what the problem was:
having the timeout value for the ping resource set to 5 seconds and the number of pings per host set to "default - 4", the probe needs at least 4 seconds per node to complete, so it got always killed by the lrm :-)


Thanks anyway! ;)

Moritz
Am 26.01.2010 um 17:01 schrieb Dejan Muhamedagic:

> Hi,
> 
> On Tue, Jan 26, 2010 at 03:55:16PM +0100, Moritz Krinke wrote:
>> Hello,
>> 
>> i'm trying to configure a 2-node cluster with one resource (ClusterIP) which should only be allowed to run if a cloned ping resource succeeds.
>> After reading the pacemaker configuration explained document and some WIKI entries i came up with the following configuration:
>> 
>> node centos5srv1
>> node centos5srv2
>> primitive ClusterIP ocf:heartbeat:IPaddr2 \
>>        meta target-role="started" is-managed="true" \
>>        operations $id="ClusterIP-operations" \
>>        op monitor interval="1s" timeout="5s" start-delay="0" \
>>        params ip="192.168.0.65" cidr_netmask="32" nic="eth0"
>> primitive ping ocf:pacemaker:ping \
>>        params dampen="5s" multiplier="1000" host_list="192.168.0.60 10.100.64.50" name="pingval" \
>>        operations $id="ping-operations" \
>>        op monitor interval="10s" timeout="5s"
>> clone Connected ping
>> location ClusterIP_on_Connected ClusterIP \
>>        rule $id="ClusterIP_on_Connected-rule" -inf: pingval lt 2000
>> property $id="cib-bootstrap-options" \
>>        dc-version="1.0.7-d3fa20fc76c7947d6de66db7e52526dc6bd7d782" \
>>        cluster-infrastructure="openais" \
>>        expected-quorum-votes="2" \
>>        no-quorum-policy="ignore" \
>>        stonith-enabled="false"
>> rsc_defaults $id="rsc_defaults-options" \
>>        resource-stickiness="100"
>> 
>> 
>> but this does not work, the ClusterIP resource wont get started at all.
>> after i removed all but one ping-target from the configuration, (and the constraint accordingly) it works.
>> 
>> primitive ping ocf:pacemaker:ping \
>>        params dampen="5s" multiplier="1000" host_list="192.168.0.60" name="pingval" \
>>        operations $id="ping-operations" \
>>        op monitor interval="10s" timeout="5s"
>> clone Connected ping
>> location ClusterIP_on_Connected ClusterIP \
>>        rule $id="ClusterIP_on_Connected-rule" -inf: pingval lt 1000
> 
> Not sure, but perhaps you ran into a string/integer issue, i.e.
> by default the comparison is done as strings. That may have
> changed later, but don't know when. At any rate, you can try
> with "number:lt" instead of lt. 
> 
> Thanks,
> 
> Dejan
> 
>> as i understand the documentation i am allowed to put multiple targets into the "host_list" directive, and the value of "pingval" contains the number of reached hosts multiplied with the value of "multiplier"?
>> 
>> in the log i see errors complaining about a failing ping:
>> Jan 26 15:42:15 centos5srv2 lrmd: [21076]: WARN: ping:0:monitor process (PID 885) timed out (try 1).  Killing with signal SIGTERM (15).
>> Jan 26 15:42:15 centos5srv2 ping[885]: INFO: They use TERM to bring us down. No such luck.
>> Jan 26 15:42:15 centos5srv2 ping[885]: ERROR: Unexpected result for 'ping -n -q -W 5 -c 5  10.100.64.50' 143: 
>> Jan 26 15:42:15 centos5srv2 attrd_updater: [909]: info: Invoked: attrd_updater -n pingval -v 1000 -d 5s 
>> Jan 26 15:42:15 centos5srv2 lrmd: [21076]: info: RA output: (ping:0:monitor:stderr) 2010/01/26_15:42:15 INFO: They use TERM to bring us down. No such luck. 2010/01/26_15:42:15 ERROR: Unexpected result for 'ping -n -q -W 5 -c 5  10.100.64.50' 143:  
>> 
>> 
>> when i issue the stated ping cmd "ping -n -q -W 5 -c 5  10.100.64.50" myself, it succeeds.
>> 
>> 
>> i probably could create a cloned ping resource for every host i want to have checked and than write corresponding rules for the location constraint, but this would result in a much more complex configuration that is needed as far as i understood the docs.
>> 
>> Any Help/Suggestions are appreciated :-)
>> 
>> Using:
>> centos5.4 x86_64
>> corosync-1.2.0-1.el5
>> openais-1.1.0-1.el5
>> pacemaker-1.0.7-2.el5
>> 
>> 
>> Thanks & Regards,
>> Moritz
>> _______________________________________________
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>> Pacemaker at oss.clusterlabs.org
>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> 
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