Re: [Linux-HA] Lots of configuration changes
The problem seems to be fixed. I have changed nothing in my configuration, but we had a problem in our network (it seems to be a loop in the spanning tree of some vlans). Once the network problem was fixed, the cluster run without problems. El 06/06/13 10:26, Angel L. Mateo escribió: Hello, I have a two node cluster with cman (v3.1.7) and pacemaker (v1.1.6) running in ubuntu 12.04 (as recommended in pacemaker documentation). This cluster has been running without problems for more than a month (since I isntalled it), but I'm having problems since I rebooted one node yesterday (I rebooted the standby node). The problem I'm having is that cman is continously changing its configuration. I can see with cman_tool status that the cluster generation value is continously increased. In the logs there a lot of messages of the form: Jun 6 09:29:49 myotis52 corosync[32048]: [TOTEM ] A processor joined or left the membership and a new membership was formed. Jun 6 09:29:49 myotis52 corosync[32048]: [CPG ] chosen downlist: sender r(0) ip(155.54.211.166) ; members(old:1 left:0) Jun 6 09:29:49 myotis52 corosync[32048]: [MAIN ] Completed service synchronization, ready to provide service. Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] CLM CONFIGURATION CHANGE Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] New Configuration: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] r(0) ip(155.54.211.166) Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Left: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Joined: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] CLM CONFIGURATION CHANGE Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] New Configuration: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] r(0) ip(155.54.211.166) Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Left: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Joined: This is happening even when I run cman in just one node. I have attached my cluster.conf file. In this file I'm using udpu transport protocol because nodes are running in vmware infrastructure where I had problems with multicast. I have checked ip configuration and it is correct: ips are correctly configured in /etc/hosts and interfaces are working without any (apparent) problem. I have also checked this same configuration but without redundant ring (that is, without altname options and dlm control=detect and rrp_mode=none) but with the same problem. Any help? ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868887590 Fax: 86337 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Lots of configuration changes
Hello, I have a two node cluster with cman (v3.1.7) and pacemaker (v1.1.6) running in ubuntu 12.04 (as recommended in pacemaker documentation). This cluster has been running without problems for more than a month (since I isntalled it), but I'm having problems since I rebooted one node yesterday (I rebooted the standby node). The problem I'm having is that cman is continously changing its configuration. I can see with cman_tool status that the cluster generation value is continously increased. In the logs there a lot of messages of the form: Jun 6 09:29:49 myotis52 corosync[32048]: [TOTEM ] A processor joined or left the membership and a new membership was formed. Jun 6 09:29:49 myotis52 corosync[32048]: [CPG ] chosen downlist: sender r(0) ip(155.54.211.166) ; members(old:1 left:0) Jun 6 09:29:49 myotis52 corosync[32048]: [MAIN ] Completed service synchronization, ready to provide service. Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] CLM CONFIGURATION CHANGE Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] New Configuration: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] r(0) ip(155.54.211.166) Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Left: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Joined: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] CLM CONFIGURATION CHANGE Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] New Configuration: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] r(0) ip(155.54.211.166) Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Left: Jun 6 09:29:51 myotis52 corosync[32048]: [CLM ] Members Joined: This is happening even when I run cman in just one node. I have attached my cluster.conf file. In this file I'm using udpu transport protocol because nodes are running in vmware infrastructure where I had problems with multicast. I have checked ip configuration and it is correct: ips are correctly configured in /etc/hosts and interfaces are working without any (apparent) problem. I have also checked this same configuration but without redundant ring (that is, without altname options and dlm control=detect and rrp_mode=none) but with the same problem. Any help? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 86337 ?xml version=1.0? cluster config_version=4 name=pacemaker dlm protocol=sctp/ fence_daemon clean_start=0 post_fail_delay=0 post_join_delay=3/ clusternodes clusternode name=myotis51 nodeid=1 votes=1 altname name=myotis51_backup/ fence method name=pcmk-redirect device name=pcmk port=server1/ /method /fence /clusternode clusternode name=myotis52 nodeid=2 votes=1 altname name=myotis52_backup/ fence method name=pcmk-redirect device name=pcmk port=server2/ /method /fence /clusternode /clusternodes fencedevices fencedevice name=pcmk agent=fence_pcmk/ /fencedevices cman transport=udpu two_node=1 expected_votes=1 / totem rrp_mode=active / logging debug=off to_syslog=yes to_logfile=no / /cluster ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Is CLVM really needed in an active/passive cluster?
Hello, I'm deploying a clustered pop/imap server with mailboxes stored in a SAN connected with fibre channel. The problem I have is that I have firstly configured the cluster with CLVM, but with this I can't create snapshots of my volumes, which is required for backups. But is this CLVM really necessary? Or it is enough to configure LVM with fencing and stonith? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 86337 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Is CLVM really needed in an active/passive cluster?
El 22/04/13 11:20, emmanuel segura escribió: Hello Angel In this thread http://comments.gmane.org/gmane.linux.redhat.release.rhel5/6395 you can find the answer to your question In that thread I can see that cLVM does not support snapshot. There is a link pointing to dd as a workaround for the snapshot (but I have a 10TB FS and dd is not an option). So my question continue, is clvm really needed? Or legacy LVM with fencing and stonich mechanism would be enough? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 86337 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
