Hi Andrew. I've followed your tutorial, but as I'm using ocfs2 and shared disk, I really got some doubts about mysql config been cloned or not. So, I've set up the mysql service without clone and I guess it's ok now.
I'll try to configure the STONITH, now. And latter I make another test with apache and tomcat and generate hb_report if the problem persists. Thanks a lot for your help. []s Glauber On Tue, Feb 16, 2010 at 6:53 PM, Andrew Beekhof <and...@beekhof.net> wrote: > On Thu, Feb 11, 2010 at 4:07 PM, Glauber Cabral <glauber...@gmail.com> wrote: >> Hi people. >> I've been reading about cluster for some time and trying to configure >> a 2-node cluster with shared storage. >> I've already used the IRC channel, but these questions were to big to >> ask there and I though the list should be a better place to make these >> questions. >> I would appreciate a lot if you can help me. >> >> I've created the configuration showed in the end of this message. >> I've still not included STONITH and I'm not sure if this is causing problems. >> I think the cluster behavior should be like this: >> OCFS2: partition with database files and some files that tomcat will >> access ( the application guarantees that a file will not be accessed >> by both tomcat instances, at least to our needs at the moment). >> Mysql: only one node running and accessing datadir inside the shared storage. >> Tomcat: both nodes running tomcat and accessing mysql by a virtual IP >> apache: will run only on one node and will load balance connections to >> both tomcats by ajp protocol. >> tomcat needs to start after mysql and filesystem >> apache will start after tomcat (but I'm not sure if it's necessary) >> >> The first question if about mysql. It's running only on one node at a >> time, > > You cloned it though, so it thinks it should be able to run more than once. > >> but the logfile has a warn message showing that the other mysqld >> process cannot run anywehere. I'm not sure if this warn is correct or >> if I did something wrong configuring mysql service. Should it be >> configured as master/slave? > > If they're supposed to run on both hosts with one of them r/o and > syncing from the other, yes. > >> I didn't understand this correctly because >> all the tutorials I've found use DRDB and not a shared partition. >> >> Another question is about migrating apache from one node to other. >> When I migrate apache, the tomcat service is restarted and I guess it >> shouldn't be. >> I think it's being restarted because of the colocation rule. Is this >> correct? Should I remove that rule? > > Probably not. > You should create a hb_report for that. > >> >> The third question. I tried to shutdown a node by powering it off, and >> the services didn't turned on in the other node. Does it occurred >> because I don't have STONITH configured? > > No, its because they're already there. You cloned them all, they're > always running there. > Although OCFS2 with no STONITH is insanely dangerous. > >> I know there are few >> information here to answer this question, but I just want to have >> ideas about what kind of error I must look for. >> >> Thank you in advance for any suggestions and help. >> Cheers, >> Glauber >> >> The crm configuration: >> >> node erytheia >> node panopea >> primitive apache ocf:heartbeat:apache \ >> params configfile="/etc/httpd/conf/httpd.conf" \ >> op monitor interval="1min" \ >> meta target-role="Started" is-managed="true" >> primitive dlm ocf:pacemaker:controld \ >> op monitor interval="120s" >> primitive fs ocf:heartbeat:Filesystem \ >> params device="/dev/xvdb1" directory="/tidia" fstype="ocfs2" \ >> op monitor interval="120s" >> primitive ip ocf:heartbeat:IPaddr2 \ >> params ip="143.106.157.26" cidr_netmask="25" \ >> op monitor interval="30s" >> primitive ip_mysql ocf:heartbeat:IPaddr2 \ >> params ip="192.168.128.10" cidr_netmask="25" \ >> op monitor interval="30s" timeout="30s" start-delay="0" depth="0" >> primitive mysqld ocf:heartbeat:mysql \ >> params binary="/usr/bin/mysqld_safe" >> datadir="/tidia/mysql/datadir" pid="/home/sakai/mysql/mysqld.pid" >> socket="/home/sakai/mysql/mysqld.sock" >> log="/home/sakai/mysql/mysqld.log" user="sakai" group="tidia" \ >> meta target-role="Started" \ >> op monitor interval="120s" >> primitive o2cb ocf:ocfs2:o2cb \ >> op monitor interval="120s" >> primitive tomcat ocf:heartbeat:tomcat \ >> params statusurl="http://127.0.0.1:8080"; >> java_home="/usr/java/jdk1.5.0_22" tomcat_name="tomcat" >> tomcat_user="sakai" tomcat_stop_timeout="120" >> tomcat_start_opts="-server -Xms512m -Xmx1024m -XX:+UseParallelGC >> -XX:PermSize=256m -XX:MaxPermSize=512m -XX:NewSize=256m >> -XX:MaxNewSize=486m -Djava.awt.headless=true -Duser.language=pt >> -Duser.region=BR -Dsakai.demo=false" >> catalina_home="/usr/lib/apache-tomcat-5.5.23" >> catalina_pid="/usr/lib/apache-tomcat-5.5.23/logs/catalina.pid" >> catalina_opts="-Xmx512M -XX:MaxPermSize=256M >> -Duser.timezone=America/Sao_Paulo -Duser.language=pt -Duser.region=BR" >> \ >> op start interval="0" timeout="240s" \ >> op stop interval="0" timeout="240s" \ >> op status interval="0" timeout="60s" \ >> op monitor interval="10s" timeout="30s" start-delay="0" depth="0" \ >> meta target-role="Started" >> clone dlm-clone dlm \ >> meta globally-unique="false" interleave="true" target-role="Started" >> clone fs-clone fs \ >> meta interleave="true" ordered="true" target-role="Started" >> clone mysql-clone mysqld \ >> meta interleave="true" target-role="Started" >> clone o2cb-clone o2cb \ >> meta globally-unique="false" interleave="true" target-role="Started" >> clone tomcat-clone tomcat \ >> meta ordered="false" interleave="true" globally-unique="false" >> is-managed="true" >> location cli-prefer-apache apache \ >> rule $id="cli-prefer-rule-apache" inf: #uname eq erytheia >> location cli-prefer-ip ip \ >> rule $id="cli-prefer-rule-ip" inf: #uname eq erytheia >> location cli-prefer-mysql-clone mysql-clone \ >> rule $id="cli-prefer-rule-mysql-clone" inf: #uname eq erytheia >> colocation apache-with-ip inf: apache ip >> colocation fs-with-o2cb inf: fs-clone o2cb-clone >> colocation mysql_with_fs inf: mysql-clone fs-clone >> colocation mysql_with_ip_mysql inf: mysql-clone ip_mysql >> colocation o2cb-with-dlm inf: o2cb-clone dlm-clone >> colocation tomcat_with_fs inf: tomcat-clone fs-clone >> order start-apache-after-ip inf: ip apache >> order start-fs-after-o2cb inf: o2cb-clone fs-clone >> order start-o2cb-after-dlm inf: dlm-clone o2cb-clone >> order start_mysql_after_fs inf: fs-clone mysql-clone >> order start_mysql_after_ip_mysql inf: ip_mysql mysql-clone >> order start_tomcat_after_fs inf: fs-clone tomcat-clone >> order start_tomcat_after_ip inf: ip tomcat-clone >> order start_tomcat_before_apache inf: tomcat-clone apache >> property $id="cib-bootstrap-options" \ >> last-lrm-refresh="1265892279" \ >> expected-quorum-votes="2" \ >> dc-version="1.0.5-ee19d8e83c2a5d45988f1cee36d334a631d84fc7" \ >> cluster-infrastructure="openais" \ >> stonith-enabled="false" \ >> no-quorum-policy="ignore" >> rsc_defaults $id="rsc-options" \ >> resource-stickiness="100" >> >> _______________________________________________ >> 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 > _______________________________________________ Pacemaker mailing list Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker
