[Pacemaker] Problem with ClusterIP

Wed Nov 26 12:22:42 UTC 2014

Anne,

Are you expecting the eth0 to actually put in the "down" state like using the "ifconfig eth0 down" command? If so the IPaddr2 resource does not do that. What that is used for is to configure a second IP address on the NIC that can be moved around from "eth0" on each node. Can you clearify that? Also, can you paste the output of the "ip addr" command as well? The full configuration of "crm configure show" would also be helpful

Thanks,
Keith

Keith Ouellette

KeithO at fibermountain.com
700 West Johnson Avenue
Cheshire, CT06410
www.fibermountain.com
P. (203) 806-4046
C. (860) 810-4877
F. (845) 358-7882

Disclaimer: The information contained in this communication is confidential, may be privileged and is intended for the exclusive use of the above named addressee(s). If you are not the intended recipient(s), you are expressly prohibited from copying, distributing, disseminating, or in any other way using any information contained within this communication. If you have received this communication in error, please contact the sender by telephone or by response via mail. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on this message, as well as any attachments. We cannot accept liability for any loss or damage caused by software viruses.

-----Original Message-----
From: Anne Nicolas [mailto:ennael1 at gmail.com]
Sent: Wednesday, November 26, 2014 6:54 AM
To: pacemaker at oss.clusterlabs.org
Subject: Re: [Pacemaker] Problem with ClusterIP

Le 26/11/2014 12:23, Michael Schwartzkopff a écrit :
> Am Mittwoch, 26. November 2014, 12:01:36 schrieb Anne Nicolas:
>> Hi !
>>
>> I've been using clusterip for a while now without any problem in
>> Active/Passive clusters (2 nodes).
>
> Could you please explain, how could you use the ClusterIP in a
> active/passive cluster? ClusterIP ist for the use in an active/active
> cluster. See man iptables and look for the CLUSTERIP target.

>
> Please explain more detailed.
> What is your config?
> What do you expect the cluster to do?
> What really happens?
> Where is  the problem?

Maybe my explanation was not that clear. Here is my configuration

crm configuration show

node $id="17435146" pogcupsvr
node $id="34212362" pogcupsvr2
primitive apache ocf:heartbeat:apache \
         params configfile="/etc/httpd/conf/httpd.conf" \
         op start interval="0" timeout="40s" \
         op stop interval="0" timeout="60s"
primitive clusterip ocf:heartbeat:IPaddr2 \
         params ip="172.16.16.11" cidr_netmask="24" nic="eth0" \
         meta target-role="Started"
...
property $id="cib-bootstrap-options" \

dc-version="1.1.7-2.mga1-ee0730e13d124c3d58f00016c3376a1de5323cff" \
         cluster-infrastructure="corosync" \
         stonith-enabled="false" \
         no-quorum-policy="ignore"
rsc_defaults $id="rsc-options" \
         resource-stickiness="100"

So I've started primary node (pogcupsvr). Configuration was checked and ok. Then started the second node (pogcupsvr2). This time all the configuration looked ok, no error but when I checked the network configuration, eth0 was up on both nodes with same IP address of course, instead of having it up only on primary node.

What I was expected (and in all other tests it was ok ) is that eth0 was up only on primary node and used by apache server.
>
>> I'm looking for ideas to investigate the causes for such a problem.
>> If anybody can help me on this, I would be gratefull
>
> Yes, I think I can help ;-)

Thanks for that :)
>
>
> Mit freundlichen Grüßen,
>
> Michael Schwartzkopff
>
>
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org Getting started:
> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org
>

--
Anne
http://mageia.org

_______________________________________________
Pacemaker mailing list: Pacemaker at oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker

Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org