Many thanks for your help ! just one question about your mysql ip. Do you use a dedicated ip for mysql ? Why not just refer to localhost ? -- Frédéric LEROY Mobile : +33 6 85 84 49 07
> On 12/30/2009 10:04 AM, f...@fredleroy.com wrote: >> Hi all, >> >> I'm a real newbie to pacemaker and after quite a few reading, I believe >> my >> setup would be the following : >> - 2 node cluster active/passive >> - using debian lenny, 1 nic per node, hard raid1 on each node >> - plan to use the corosync/pacemaker package >> - each node will host drdb (protocol c), ip, apache and mysql services >> - drdb will be used for apache and mysql conf and data files >> - will group ip, apache and mysql >> - will use ms for drdb >> - drdb will be using internal meta data >> - group of services will be collocated on drdb master >> - order group after drdb master. >> >> Is this a workable setup ? > > we're basically doing the same for a couple of customers. > with either 1 or more different drbd devices (for each service). > e.g. > > example crm status output: >> Master/Slave Set: ms_drbd_data >> Masters: [ node1 ] >> Slaves: [ node2 ] >> Resource Group: group_data >> fs_data (ocf::heartbeat:Filesystem): Started node1 >> Resource Group: group_webservice >> wwwip (ocf::heartbeat:IPaddr2): Started node1 >> apache2 (ocf::heartbeat:apache): Started node1 >> Resource Group: group_mysql >> intip_sql (ocf::heartbeat:IPaddr2): Started node1 >> mysql-server (ocf::heartbeat:mysql): Started node1 >> stonith_rackpdu_node1 (stonith:external/rackpdu): Started node2 >> stonith_rackpdu_node2 (stonith:external/rackpdu): Started node1 > > however, i'm still on some old, testing debian packages: > * pacmemaker 1.0.4-2ec1d189f9c23093bf9239a980534b661baf782d with > * openais-legacy 0.80.5+svn20090606-1~bpo50+1 > > thus i cannot directly comment on corosync/pacemaker. > >> I'm a bit worried about performance issues regarding disk latency, >> especially with one nic (lan is gigabit). > > we have 2 nics per server. 1 for external services and 1 with a cross > over cable for fast drbd replication. drbd tuning might be an important > issue for you. > >> Also I would like to monitor operations of all services in the group >> (ip, >> apache and mysql) and drdb so if one fails a switch of node is >> performed. >> I did not understand if this was feasible with lsb (mysqld, for all the >> other services i'll try to use the ofc) ? > > afairc the lsb complient scripts use the "/etc/init.d/lsb-script > status" command to monitor the resource. > > but for each service you mentioned (mysql, apache, ip, drbd) there is a > corresponding ocf compliant resource agent. > > > cheers, > raoul > -- > ____________________________________________________________________ > DI (FH) Raoul Bhatia M.Sc. email. r.bha...@ipax.at > Technischer Leiter > > IPAX - Aloy Bhatia Hava OEG web. http://www.ipax.at > Barawitzkagasse 10/2/2/11 email. off...@ipax.at > 1190 Wien tel. +43 1 3670030 > FN 277995t HG Wien fax. +43 1 3670030 15 > ____________________________________________________________________ > > _______________________________________________ > Pacemaker mailing list > Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > _______________________________________________ Pacemaker mailing list Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker
