Monitoring Java applications using JMX

[rimelalami]

Hello everyone!
I found problems to monitor tomcat installed in a centos7 server.
I have zabbix-server installed in an ubuntu server and I want to monitor tomcat server installed in centos using JMX.
I've installed java gateway in my zabbix-server machine, because there isn't enought documentation about this part, I don't know what to do next.
Please if it works for anyone what are the steps that you followed.
I work with zabbix for my internship; so I'm new at zabbix.
Thank you

[rv_overseer]

Configuring Zabbix server

Have you edited the Zabbix Server config file and added the JavaGateway details as in the documentation:
https://www.zabbix.com/documentation...oncepts/java?s[]=java&s[]=gateway&s[]=configuration

12.5.4 Configuring server for use with Java gateway

Now that Java gateway is running, you have to tell Zabbix server where to find Zabbix Java gateway. This is done by specifying JavaGateway and JavaGatewayPort parameters in server configuration file. If the host on which JMX application is running is monitored by Zabbix proxy, then you specify the connection parameters in proxy configuration file instead.

JavaGateway=192.168.3.14
JavaGatewayPort=10052

[allexpetrov]

Hello everyone!
I found problems to monitor tomcat installed in a centos7 server.
I have zabbix-server installed in an ubuntu server and I want to monitor tomcat server installed in centos using JMX.
I've installed java gateway in my zabbix-server machine, because there isn't enought documentation about this part, I don't know what to do next.
Please if it works for anyone what are the steps that you followed.
I work with zabbix for my internship; so I'm new at zabbix.
Thank you

Hi, rimelalami!

You need to configure server to use Java Gateway:

Open zabbix_server.config , and add few strings
JavaGateway=127.0.0.1
StartJavaPollers=5

also don't forget to add few lines in tomcat.conf(/etc/tomcat/tomcat.conf) file:
JAVA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=12345 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false"

Regards,
Alex

[rimelalami]

Thank you Alex !
I did what you said & I've also added the jmx template but it still doesn't work; I don't know where I went wrong or if I missed any configuration ! Do you have any idea

[allexpetrov]

Thank you Alex !
I did what you said & I've also added the jmx template but it still doesn't work; I don't know where I went wrong or if I missed any configuration ! Do you have any idea

rimelalami,
we can't help you without information from you.

First of all, lets start with reading and pasting log files ( don't forget to wrap them in [CODE] tag) :

1. Paste your server logs here. If server can't perform checks - it should be in log. You can open log file using tail -f /var/log/zabbix/zabbix_server.log

2. Paste, as a screenshot, your host configuration (which you want to monitor).

Lets start with those two points and then we will see what we can do next!

P.S. -And please, don't start threadbombing - it looks disrespectful