Are you trying to resolve the error message 'Zabbix server can’t connect to java gateway'? 

This guide will help you.

Here at Ibmi Media, as part of our Server Management Services, we regularly help our Customers to fix errors while troubleshooting Zabbix.

In this context, we shall fix this Zabbix error message.

Method to fix the 'Zabbix server can't connect to java gateway' error ?

Recently, one of our customers approached us saying that he has a Zabbix server and java gateway in the same Linux server. 

He tried to start the Zabbix-server and Zabbix-java-gateway service.

Then in the Zabbix web console, he added a host that enabled the JMX interface. 

The host IP address was 192.xx.xx.2xx and the JMX port was 9999.

In jconsole, he was able to connect to the JMX-enabled java application.

But in the Zabbix web console, he came across the below error message:

cannot connect to [[192.xx.xx.2xx]:10052]:[13]Permission denied

Now let us see how our Support Experts resolve this error to our customer.

1. First, we made sure that the SELinux or iptables are not blocking the requests.

2. Next, we edited the Zabbix configuration file i.e. zabbix_server.conf file. 

Here we changed the below code:

JavaGateway=192.xx.xx.2xx

to

JavaGateway=127.0.0.1

3. Then we modified the file java gateway configuration file i.e. zabbix_java_gateway.conf. 

Here we changed the below code:

LISTEN_IP=192.xx.xx.2xx

to

LISTEN_IP=127.0.0.1

4. After that, we restarted the Zabbix server. For that, we ran the below command:

service zabbix-server restart

4. Then we restarted the java gateway as well. For that, we ran the below command:

service zabbix-java-gateway restart

5. Finally, we add the below VM options:

-Djava.net.preferIPv4Stack=true

That's it! This resolved the Zabbix error message to our customer.

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