I do this test one more time and I got same result with more precisions: When I shutdown network on 2 nodes including the master, master stay alive while the 2 online nodes are fencing the offline non-master node. The cluster goes Inquorate after. When fenced node came back, he joins cluster and cluster becomes quorate. New master is chose and the old master is fenced. # cman_tool status Version: 6.2.0 Config Version: 144 Cluster Name: cluname Cluster Id: 57462 Cluster Member: Yes Cluster Generation: 488 Membership state: Cluster-Member Nodes: 4 Expected votes: 5 Quorum device votes: 1 Total votes: 5 Quorum: 3 Active subsystems: 9 Flags: Dirty Ports Bound: 0 177 Node name: nodename Node ID: 2 Multicast addresses: ZZ.ZZ.ZZ.ZZ Node addresses: YY.YY.YY.YY -- .`'`. GouNiNi : ': : `. ` .` GNU/Linux `'` http://www.geekarea.fr ----- Mail original ----- > De: "emmanuel segura" <emi2fast@xxxxxxxxx> > À: "linux clustering" <linux-cluster@xxxxxxxxxx> > Envoyé: Lundi 30 Juillet 2012 17:35:39 > Objet: Re: Quorum device brain the cluster when master lose network > > > can you send me the ouput from cman_tool status? when the cluster > it's running > > > 2012/7/30 GouNiNi < gounini.geekarea@xxxxxxxxx > > > > > > ----- Mail original ----- > > De: "Digimer" < lists@xxxxxxxxxx > > > À: "linux clustering" < linux-cluster@xxxxxxxxxx > > > Cc: "GouNiNi" < gounini.geekarea@xxxxxxxxx > > > Envoyé: Lundi 30 Juillet 2012 17:10:10 > > Objet: Re: Quorum device brain the cluster when > > master lose network > > > > On 07/30/2012 10:43 AM, GouNiNi wrote: > > > Hello, > > > > > > I did some tests on 4 nodes cluster with quorum device and I find > > > a > > > bad situation with one test, so I need your knowledges to correct > > > my configuration. > > > > > > Configuation: > > > 4 nodes, all vote for 1 > > > quorum device vote for 1 (to hold services with minimum 2 nodes > > > up) > > > cman expected votes 5 > > > > > > Situation: > > > I shut down network on 2 nodes, one of them is master. > > > > > > Observation: > > > Fencing of one node (the master)... Quorum device Offline, Quorum > > > disolved ! Services stopped. > > > Fenced node reboot, cluster is quorate, 2nd offline node is > > > fenced. > > > Services restart. > > > 2nd node offline reboot. > > > > > > My cluster is not quorate for 8 min (very long hardware boot :-) > > > and my services were offline. > > > > > > Do you know how to prevent this situation? > > > > > > Regards, > > > > Please tell us the name and version of the cluster software you are > > using, Please also share your configuration file(s). > > > > -- > > Digimer > > Papers and Projects: https://alteeve.com > > > > Sorry, RHEL5.6 64bits > > # rpm -q cman rgmanager > cman-2.0.115-68.el5 > rgmanager-2.0.52-9.el5 > > > <?xml version="1.0"?> > <cluster alias="cluname" config_version="144" name="cluname"> > <clusternodes> > <clusternode name="node1" nodeid="1" votes="1"> > <fence> > <method name="single"> > <device name="fenceIBM_307" port="12"/> > </method> > </fence> > </clusternode> > <clusternode name="node2" nodeid="2" votes="1"> > <fence> > <method name="single"> > <device name="fenceIBM_307" port="11"/> > </method> > </fence> > </clusternode> > <clusternode name="node3" nodeid="3" votes="1"> > <fence> > <method name="single"> > <device name="fenceIBM_308" port="6"/> > </method> > </fence> > </clusternode> > <clusternode name="node4" nodeid="4" votes="1"> > <fence> > <method name="single"> > <device name="fenceIBM_308" port="7"/> > </method> > </fence> > </clusternode> > </clusternodes> > <fencedevices> > <fencedevice agent="fence_bladecenter" ipaddr="XX.XX.XX.XX" > login="xxxx" name="fenceIBM_307" passwd="yyyy"/> > <fencedevice agent="fence_bladecenter" ipaddr="YY.YY.YY.YY" > login="xxxx" name="fenceIBM_308" passwd="yyyy"/> > </fencedevices> > <rm log_level="7"> > <failoverdomains/> > <resources/> > <service ...> > <...> > </service> > </rm> > <fence_daemon clean_start="0" post_fail_delay="15" > post_join_delay="300"/> > <cman expected_votes="5"> > <multicast addr="ZZ.ZZ.ZZ.ZZ"/> > </cman> > <quorumd interval="7" label="quorum" tko="12" votes="1"/> > </cluster> > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > > > -- > esta es mi vida e me la vivo hasta que dios quiera > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
