Tomcat Monitoring

[Bharathu]

Hi,

I need help in TomCat monitoring. I have referred the Zabbix Manual for JMX thing. But i have a basic question as I am very new to Java and tomacat andd stuff. My questions are

1) Can anyone tell me where exactly we need to type these commands given below? What is meant by the so called TomCat environment?? Forgive me for this basic questions!!

Also can any port number be used?

In my tomcat environment, I enable it by setting the following options for the jvm:

-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=xxxxx \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=true \
-Dcom.sun.management.jmxremote.password.file=/path/java/jre/lib/management/jmxremote. password"

2) The next question is where can I type the following command?

With tomcat, I can do the following:

curl -s -u<jmxusername>:<jmxpassword> 'http://<tomcat_hostname>/manager/jmxproxy/?qry=java.lang:type=Threading'

The Zabbix Manual/Post on this topic was very extensive. But for a novice like me, if the above 2 questions can be answered it will be great.

I am also working on a detailed documentation on Zabbix installation. Hope to share with you all once I try all features. My manual is aimed for novice users like me to appreciate this wonderful tool. Please help me with the above 2 doubts

[Bharathu]

plz help

Can anyone give me some idea on the above 2 questions I posted?

[Bharathu]

Some Progress

Greetings!!

I made some changes to the Catalina.bat file of Tomcat. these are the following changes

set JAVA_OPTS=%JAVA_OPTS% -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true -Dcom.sun.management.jmxremote.password.file=C:/Program Files/Java/jdk1.5.0_06/jre/lib/management/jmxremote.password

Please guide me if i am going in the right direction.

I need some help on the usage of CURL. Any advise from anyone??

[Kees Jan Koster]

Dear Bharathu,

I'm not sure if you still have these questions, but I have written a precise howto for Tomcat monitoring with Zabbix and Zapcat on my web site.

http://www.kjkoster.org/zapcat/Tomcat_How_To.html

Kees Jan

[consultorpc]

We are trying to install this agent to interact a Zabbix 1.6 server without luck.

Have you installed on a 1.6 ?

TIA.

[Kees Jan Koster]

What error are you seeing?

[consultorpc]

We have managed to get the Tomcat part working and it's generating the .xml file, but when trying to import to zabbix server doen't seems to be working, it just show nothing.

[Kees Jan Koster]

I haven't tried the XML upload in 1.6. Check the http error logs, make sure you have PHP's XML support module installed.

You can try exporting a host and seeing if the format of the import/export files has changed.

[consultorpc]

I have checked the httpd error logs and it shows :

[error] [client x.x.x.x] PHP Parse error: syntax error, unexpected ')' in /home/html/zabbix/include/import.inc.php on line 510, referer: http://localhost/monitoring/exp_imp....3fb420un090fw2

Also when I checked the item fields between the generated zapcat generated xml and the exported 1.6.3 host xml, there are a lot of new fields in items. Is that stopping the import, because of not having all fields in the importing xml file?

[consultorpc]

php has xml support, because we had imported some templates in past without any issues. The phpinfo shows :

XML Support active
XML Namespace Support active

I have created the host with the available information on the xml and exported it. Here are the difference of xml files:

exported from zapcat:

####################START#########################

<zabbix_export version="1.0" date="08.04.09" time="04.07">
−
<hosts>
−
<host name="tomcat_localhost">
<dns>tomcat_localhost</dns>
<ip>x.x.x.x</ip>
<port>10052</port>
<groups>
</groups>
−
<items>
−
<item type="0" key="jmx[Catalina:type=Server][serverInfo]" value_type="1">
<description>tomcat version</description>
<delay>3600</delay>
<history>90</history>
<trends>365</trends>
<formula>1</formula>
<snmp_community>public</snmp_community>
<snmp_oid>interfaces.ifTable.ifEntry.ifInOctets. 1</snmp_oid>
<snmp_port>161</snmp_port>
</item>
</items>
<triggers>
</triggers>
<graphs>
</graphs>
</host>
</hosts>
</zabbix_export>

######################END########################

Exported from zabbix 1.6.3

#####################START########################

<?xml version="1.0" ?>
- <zabbix_export version="1.0" date="08.04.09" time="04.02">
- <hosts>
- <host name="tomcat_localhost">
<useip>1</useip>
<dns>tomcat_localhost</dns>
<ip>x.x.x.x</ip>
<port>10052</port>
<status>0</status>
<groups />
- <items>
- <item type="0" key="jmx[Catalina:type=Server][serverInfo]" value_type="3">
<description>tomcat version</description>
<ipmi_sensor />
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>3</status>
<units />
<multiplier>0</multiplier>
<delta>0</delta>
<formula>1</formula>
<lastlogsize>0</lastlogsize>
<logtimefmt />
<delay_flex />
<params>DSN=<database source name>\nuser=<user name>\npassword=<password>\nsql=<query></params>
<trapper_hosts />
<snmp_community>public</snmp_community>
<snmp_oid>interfaces.ifTable.ifEntry.ifInOctets. 1</snmp_oid>
<snmp_port>161</snmp_port>
<snmpv3_securityname />
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authpassphrase />
<snmpv3_privpassphrase />
</item>
</items>
</host>
</hosts>
</zabbix_export>

###############END##########################

The sad part is that, I have removed the added host, when I tried to import the exported xml file from zabbix, it shows the same error on httpd error log also there are nothing on zabbix Host list.

Also I did a zabbix_get from the zabbix server :

# zabbix_get -s x.x.x.x -p 10052 -k jmx[Catalina:type=Server][serverInfo]
ZBX_NOTSUPPORTED

The Type of this items are Zabbix_agent right ?

[consultorpc]

Hi,

The import issue was a minor bug in Zabbix 1.6.3 and it is cleare with the patch.

http://www.zabbix.org/forum/showthread.php?t=12069

After the import, now the items shows Error: Not supported by ZABBIX agent for Item : jmx[Catalina:type=Server][serverInfo] .

Is there any other configuration needed on zapcat? I just copied the zapcat.war to webapps folder, added -Dcom.sun.management.jmxremote to the tomcat startup script options and it starts listening on port 10052. Please help me to solve this problem.

Thanks

consultorpc

[consultorpc]

FYI. I have imported the templates coming with zapcat-1.2 (Template_Hibernate.xml, Template_Java.xml and Template_Tomcat.xml)

Now some of the keys are with status active, like jmx[java.lang:type=ClassLoading][TotalLoadedClassCount] and most of the keys are with status not supported.

[mlange]

You should go and create your own templates, maybe the provided ones are not up-to-date.