Configuring multiple JVMs in a single physical Linux box
We already have two separate JVMs i.e. peginfwlasv01, peginfwlasv02 - one on each separate Linux box
We are merging another application in same instance so thinking from scalability perspective....we are evaluating if it's possible to create multiple JVMs on each node.
The question is in each of these Linux box… let’s say peginfwlasv01, how we could still configure multiple JVMs using different ports? Is it possible and will it improve performance?
How should we select the port number to be used for each JVM assuming these ports are not already in use? Your help is appreciated.
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Infosys Technologies
NL
Hi Vipin,
Pega Application is a Java application with high memory requirements. You can maintain multiple JVMs in a single linux box, provided you have enough memory for all the JVMs, please refer the link below which provides information on the best practices to configure a JVM.
Link: https://docs-previous.pega.com/performance/jvm-configuration-best-practices
Configuring Application on a specific port:
To verify if a selected port is in use or not, linux commands can be used. "netstat" is one such command which can be used for this purpose.
Kindly let us know if you have any queries on this.
Regards,
Krishna Kondu
Pegasystems Inc.
IN
Hi Vipin,
Adding to the above-suggested solutions, In case if you are using any external load balancer like F5, you can use NATing to assigned different IP addresses to each node. Read more about NATing in the following article.
http://linux-ip.net/html/nat-stateless.html
Note: - While doing the NATing, try all the IPs should be in the same network otherwise you might face some issue with Full-Text search and other HA features in case of network issues whilst application try to join the cluster.