Zabbix | How to monitor tomcat on remote machine using jmx | Monitor tomcat using JMX in Zabbix

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Link to install Zabbix on ubuntu machine :
https://youtu.be/eao6qjVF17A

Link to install Zabbix agent on windows server:
https://youtu.be/QoXxeFXPLlA

Link to install Zabbix agent on linux server:
https://youtu.be/pSUGLQ6fZ5U

In this session, we will look at how to monitor tomcat running on a remote server using Java gateway and JMX.

For this i am using 2 servers.
Zabbix server : Ubuntu EC2 instance
Tomcat server : Ubuntu EC2 instance

Zabbix server is running the Zabbix monitoring tool
Tomcat server is running the Tomcat application.

Make sure your zabbix server is up and running. You will need to install the java gateway on the zabbix server.

"apt install zabbix-java-gateway -y"

Make sure you have port 10050, 10051 and 10052 are open

"netstat -tulpn"

On the remote machine where tomcat is running, create a setenv.sh file in your bin directory and add the following contents.

export CATALINA_OPTS="$CATALINA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=12345 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=100.25.34.154 -Dcom.sun.management.jmxremote.rmi.port=10052 -Djava.net.preferIPv4Stack=true"

-Djava.rmi.server.hostname=100.25.34.154 ---- change the IP address with the tomcat server IP address.

Github link for the above code snippet :
https://github.com/Dgruploads/Zabbix/blob/master/Catalina_opts_for_jmx_zabbix

Link to install agent on Linux machine:
https://youtu.be/pSUGLQ6fZ5U

Link to download tomcat :
https://mirrors.estointernet.in/apache/tomcat/tomcat-8/v8.5.56/bin/apache-tomcat-8.5.56.tar.gz
https://tomcat.apache.org/download-80.cgi

Link to download sample war package :
https://tomcat.apache.org/tomcat-7.0-doc/appdev/sample/sample.war

stop and restart the tomcat server and make sure port number 10050, 12345 and 10052 are open on the remote machine.

Go back to the zabbix dashboard and add the JMX interface by following the video.

Happy learning!!

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