[ClusterLabs] Adding Tomcat as a resource to a Cluster on CentOS 7

Tue Dec 5 04:07:58 EST 2017

On 04/12/17 16:29 +0000, Sean Beeson wrote:
>Thank you for the replay, Oyvind. I gave it plenty of time to start up.
>using  tomcat_name="tomcat" it starts what I can only call a lifeless PID,
>but it never seems to actually start up. The catalina.out file is never
>touched, so it never has anything in it to indicate a problem. Pacemaker
>does seem to be managing it though because, although this PID shows, it
>will report it as not running and then move everything to the other node.
>It will do that a couple times, but that eventually stops as well.
Try "pcs resource disable <resource>" and then "pcs resource
debug-start --full <resource>". The last command will start the
resource and show you which commands are run, so you can troubleshoot
why it's failing.
>
>Kind regards,
>
>Sean
>
>On Thu, Nov 30, 2017 at 10:40 PM Oyvind Albrigtsen <oalbrigt at redhat.com>
>wrote:
>
>> Tomcat can be very slow at startup depending on the modules you use,
>> so you can either disable modules you arent using to make it start
>> faster or set a higher start timeout via "pcs resource <resource> op
>> start interval=".
>>
>> On 30/11/17 13:26 +0000, Sean Beeson wrote:
>> >Hi, list.
>> >
>> >This is a pretty basic question. I have gone through what I could find on
>> >setting up Tomcat service as a resource to a cluster, but did not find
>> >exactly the issue I am having. Sorry, if it has been covered before.
>> >
>> >I am attempting this on centos-release-7-4.1708.el7.centos.x86_64.
>> >The pcs I have installed is pcs-0.9.158-6.el7.centos.x86_64
>> >The resource-agents installed is resource-agents-3.9.5-105.el7_4.2.x86_64
>> >
>> >I have DRBD, MySql, and a virtual IP running spectacularly well and they
>> >failover perfectly and do exactly what I want them. I can add Tomcat as a
>> >resource just fine, but it never starts and I can not fined anything in
>> any
>> >log file that indicates why. Pcs does at some point know to check on it,
>> >but simply says Tomcat is not running. If I run everything manually on in
>> a
>> >cluster I can manually get Tomcat to start with systemctl. Here is how I
>> am
>> >try to configure it.
>> >
>> >[root at centos7-ha-lab-01 ~]# pcs status
>> >Cluster name: ha-cluster
>> >Stack: corosync
>> >Current DC: centos7-ha-lab-02-cr (version 1.1.16-12.el7_4.4-94ff4df) -
>> >partition with quorum
>> >Last updated: Thu Nov 30 21:03:36 2017
>> >Last change: Thu Nov 30 20:53:37 2017 by root via cibadmin on
>> >centos7-ha-lab-01-cr
>> >
>> >2 nodes configured
>> >6 resources configured
>> >
>> >Online: [ centos7-ha-lab-01-cr centos7-ha-lab-02-cr ]
>> >
>> >Full list of resources:
>> >
>> > Master/Slave Set: DRBD_data_clone [DRBD_data]
>> >     Masters: [ centos7-ha-lab-01-cr ]
>> >     Slaves: [ centos7-ha-lab-02-cr ]
>> > fsDRBD_data    (ocf::heartbeat:Filesystem):    Started
>> centos7-ha-lab-01-cr
>> > OuterDB_Service    (systemd:mysqld):    Started centos7-ha-lab-01-cr
>> > OuterDB_VIP    (ocf::heartbeat:IPaddr2):    Started centos7-ha-lab-01-cr
>> > tomcat_OuterWeb    (ocf::heartbeat:tomcat):    Stopped
>> >
>> >Failed Actions:
>> >* tomcat_OuterWeb_start_0 on centos7-ha-lab-01-cr 'unknown error' (1):
>> >call=67, status=Timed Out, exitreason='none',
>> >    last-rc-change='Thu Nov 30 20:56:22 2017', queued=0ms, exec=180003ms
>> >* tomcat_OuterWeb_start_0 on centos7-ha-lab-02-cr 'unknown error' (1):
>> >call=57, status=Timed Out, exitreason='none',
>> >    last-rc-change='Thu Nov 30 20:53:23 2017', queued=0ms, exec=180003ms
>> >
>> >Daemon Status:
>> >  corosync: active/enabled
>> >  pacemaker: active/enabled
>> >  pcsd: active/enabled
>> >
>> >I have tried with and without tomcat_name=tomcat_OuterWeb and tomcat and
>> >root for tomcat_user=. Neither work.
>> >
>> >Here is the command I am using to add it.
>> >
>> >pcs resource create tomcat_OuterWeb ocf:heartbeat:tomcat
>> >java_home="/opt/java/jre1.7.0_80" catalina_home="/opt/tomcat7"
>> >catalina_opts="-Dbuild.compiler.emacs=true -Dfile.encoding=UTF-8
>> >-Djava.util.logging.config.file=/opt/tomcat7/conf/log4j.properties
>> >-Dlog4j.configuration=file:/opt/tomcat7/conf/log4j.properties -Xms1024m
>> >-Xmx1024m -XX:PermSize=256m -XX:MaxPermSize=512m" tomcat_user="root" op
>> >monitor interval="15s" op start timeout="180s"
>> >
>> >I have tried also the most basic.
>> >pcs resource create tomcat_OuterWeb ocf:heartbeat:tomcat
>> >java_home="/opt/java/jre1.7.0_80" catalina_home="/opt/tomcat7"
>> >tomcat_name="tomcat_OuterWeb" tomcat_user="root" op monitor interval="15s"
>> >op start timeout="180s"
>> >
>> >I other examples I have seen they usually use params then the options in
>> >these command to add Tomcat as a resource, but when  I use that it tells
>> me
>> >that is an unrecognized option and it then accepts the options without it
>> >just fine. I was led to think this was a difference in version of the
>> >resource-agents perhaps.
>> >
>> >Any idea why I can not get Tomcat to start or some lead to the logging I
>> >could look at to understand why it is failing would be great. Nothing
>> shows
>> >in messages, catalina.out, pcsd.log, nor the resource
>> >log--tomcat_OuterWeb.log. However, it does make the resource log, but it
>> >only has this in it, which seems to be false:
>> >
>> >2017/11/30 20:50:22: start ===========================
>> >2017/11/30 20:53:22: stop  ###########################
>> >2017/11/30 20:56:22: start ===========================
>> >2017/11/30 20:59:22: stop  ###########################
>> >
>> >The only other thing is: * tomcat_OuterWeb_start_0 on centos7-ha-lab-01-cr
>> >'unknown error' (1): call=67, status=Timed Out, exitreason='none',
>> >
>> >Again, any ideas would be appreciated. Thank you.
>> >
>> >Kind regards,
>> >
>> >Sean
>>
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