JMX monitoring

[Jayshankar]

Hi,


I am configuring the Java gateway

./configure --enable-java --prefix=/usr/local. Then run make command

It doesn't create class file for all the java files. Why is the class files not getting created??. What are the steps required to configure java gateway.

Thanks,
Jayshankar

[Atsushi]

Please check the log messages.
Has an error message been output?

I think that you can judge what correspondence is necessary by that message.
For example, you can not build Java development environment if it is not installed.

[Jayshankar]

java JMX monitoring

C[root@localhost sbin]# which java
/home/jayshankar/jdk1.8.0_131/bin/java
[root@localhost sbin]# which jar
/home/jayshankar/jdk1.8.0_131/bin/jar
which javac
/home/jayshankar/jdk1.8.0_131/bin/javac

Java jdk home is setup properly.Any other package needs to be installled

[Atsushi]

I can not tell by just that information.
Please check the log at make execution.

If JDK is installed, it is the following procedure to build.

$ ./configure --enable-java --prefix=/usr/local
$ make

This builds the following file: (case Zabbix 3.0.9)
src/zabbix_java/bin/zabbix-java-gateway-3.0.9.jar

[Jayshankar]

java JMX monitoring

JAVA Gateway is running successfully.

java -server -classpath lib:lib/android-json-4.3_r3.1.jar:lib/logback-classic-0.9.27.jar:lib/logback-core-0.9.27.jar:lib/slf4j-api-1.6.1.jar:bin/zabbix-java-gateway-3.2.5.jar -Dzabbix.pidFile=/tmp/zabbix_java.pid com.zabbix.gateway.JavaGateway.

What is the next step to start monitoring??.

[ovas]

Configuring server for use with Java gateway, enabling remote JMX monitoring for Java application, configuring JMX interfaces and items in Zabbix GUI, these steps are described in the documentation:

https://www.zabbix.com/documentation/3.2/manual/concepts/java#configuring_server_for_use_with_java_gateway

https://www.zabbix.com/documentation/3.2/manual/config/items/itemtypes/jmx_monitoring

[Jayshankar]

java JMX monitoring

I didn't get the second and third part enabling remote interface for JAVA monitoring. Where can i download Notepad.jar file for jdk8.

[Atsushi]

Notepad.jar is not necessary.
You just start the application you use.
As a option to start Java applications you want to monitor, add a setting to allow access by JMX.

[Jayshankar]

JMX monitoring

I am unable to understand the jmx setup. You can show me a sample configuration. I tried the below script at my end.

java \
> -Dcom.sun.management.jmxremote \
> -Dcom.sun.management.jmxremote.port=12345 \
> -Dcom.sun.management.jmxremote.authenticate=false \
> -Dcom.sun.management.jmxremote.ssl=false \
> -jar ./src/zabbix_java/bin/zabbix-java-gateway-3.2.5.jar
no main manifest attribute, in ./src/zabbix_java/bin/zabbix-java-gateway-3.2.5.jar

[Atsushi]

Do you want to monitor JavaGateway?
Is not it a Java application like Tomcat that you want to monitor?

ex. Tomcat 9

http://tomcat.apache.org/tomcat-9.0-doc/monitoring.html#Enabling_JMX_Remote

[Jayshankar]

JMX monitoring

Hi,

I am still unable to do JMX monitoring. Java 8 is installed on my system. I need help on tomcat setup.

Thanks,
Jayshankar

[allexpetrov]

Hi,

I am still unable to do JMX monitoring. Java 8 is installed on my system. I need help on tomcat setup.

Thanks,
Jayshankar

Hi, Jayshankar!

To make it clear:
Which OSes you are using, where you've installed your Java Gateway(on the Tomcat server or on the Zabbix server) and how did you've installed your Tomcat (apt/yum or self-made from sources) ?

Regards,
Alex

[Jayshankar]

JMX monitoring

Hi,

My os is Fedora 25.
Java gateway is installed on the zabbix server machine. Logs of java gateway are as below:

2017-08-16 01:11:41.689 [main] INFO com.zabbix.gateway.JavaGateway - Zabbix Java Gateway 3.2.5 (revision 67445) has started
2017-08-16 01:11:41.769 [main] INFO com.zabbix.gateway.JavaGateway - listening on 0.0.0.0/0.0.0.0:10052.

Tomcat is not installed yet.

Thanks,
Jayshankar

[allexpetrov]

Hi,

Tomcat is not installed yet.

So am I right that you want to monitor the Tomcat which isn't installed so far ? Then, I'm afraid we couldn't help you until you've installed the Tomcat.

Please install it on the system which you want to monitor, perform some config fix, suggested in his thread, and try to setup the host in Zabbix Frontend.

Regards,
Alex

[Jayshankar]

JMX monitoring

Hi,

I have installed tomcat on linux machine. The port 8080 is currently working. What is the next step i have to do to get java gateway working.

Thanks,
Jayshankar