Question

Add a node to existing system

Hi,

We are running on a single node for our Pega Platform 7.3. This node is running on a single VM.

Can I add some more nodes to this VM, so that the Pega System can be running more efficiently?

If yes, please share on the detail steps to implement the solution. Any pointer is very much appreciated.

Regards.

***Moderator Edit-Vidyaranjan: Updated Platform Capability***

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Pega
September 6, 2019 - 2:54am

Hi Tawsern,

We cannot run more than one PRPC instance(Tomcat server) in the same JVM also it's not correct approach for the multi node environments.

Pega
September 8, 2019 - 10:29am

You can set up the another Tomcat server as node in your VM but you should be aware of whether the your VM has enough memory and processing power to support more than one node.

Pega
September 10, 2019 - 2:21pm

Hi,

You can make it multinode by changing port of the server for e.g  8080 & 8081.Please make sure that both server is pointing to same database instance.Start both the nodes one by one.After restart you can verify pr_sys_statusnode table.There will be 2 entries with different ip:port.

Please let me know if you need more detail.

 

Thanks,

Abhinav

September 10, 2019 - 9:56pm

Thanks for all the advises.

Can I conclude the following:
1) I need to install another Tomcat instance to support additional node
2) For the new Tomcat instance with the new port, I do not need to expose this new port to the users if it is meant for some Pega Processing.

Is there any readup on what is the CPU and RAM required for the VM to support the various node?

September 11, 2019 - 12:22am
Response to TawSernTan

1) I need to install another Tomcat instance to support additional node? Yes
2) For the new Tomcat instance with the new port, I do not need to expose this new port to the users if it is meant for some Pega Processing.? Yes.

I am not sure on the CPU & the RAM part.

Pega
September 11, 2019 - 1:46am
Response to TawSernTan

Hi,

 

Yes that's correct.One extra point I will add here is please make sure that both the instance are pointing to same database server.Restart node one by one.You will find two entries in pr_sys_statusnode table.

 

Thanks,
Abhinav

September 13, 2019 - 3:25am

Thanks for the input, will explore further on how to do the installation.

By the way, am I correct to say Pega and tomcat should not have any issue running on openJDK Java 8 and 11, and even version 12?

Pega
September 13, 2019 - 3:34am
Response to TawSernTan

Hi,

It depends on the version of pega whether it is supported with that java & tomcat or not .You can check the compatibility of pega versions in below support guide.

https://community.pega.com/knowledgebase/products/platform/deploy?product_version=7101

Thanks,
Abhinav