PEGA PRPC with WebSphere ODR
I am looking for some feedback as I have not seen anything in the PDN reference this.
I would like to leverage the use of WebSpheres ODR and Dynamic clustering. Has anyone here seen, implemented this with PRPC?
Does PEGA support this configuration?
The reason I want to do this, it redundancy, availability, scalability. We have the ability to simply stop a nodeagent which allows all current sessions connected to it to stay connected, but prevents any new connections form connecting.
I will be happy to elaborate more if you have more questions, but at this point I am only looking for pointers to PEGA support or any known issues doing this.
Pegasystems Inc.
US
I know there are some pega internal posts regarding if we support WAS dynamic cluster or not. The short answer is no, we have not yet tested the configuration nor do we officially supports it. It would be an enhancement request if needed. Personally (not officially), I have tried that in GCS non-critical environment, the basic stuff appears to be working but my tests were very limited.
Cahaba GBA
US
What about using a ODR to help load balance the App Servers?
I have used this configuration a LOT with other applications and would really like to get it implemented with PEGA.
By using the ODR, we are able to still have a loadbalancer (Managed by others), but be able to add/remove nodes at will without having to get a different team involved.
The ODR would allow us to take a node offline for maintenance, without having to notify different teams or cause an outage.
If all this requires an enhancement, how do I request that, and can this be expedited, even if it means we are a development partner?
Cahaba GBA
US
If there is no support for an ODR currently, is there support for using a PROXY/Secure DMZ or even a web server to segment the security risks of allowing users direct access to your WAS servers?
Pegasystems Inc.
US
all of the components you mentioned are part of normal enterprise setup that are proven working with pega applications with many of our customers.
Cahaba GBA
US
Could you provide some links for this?
I have been searching but have not had much luck finding any documentation for this. I know in PEGA 7.2 I found this, but we are running 7.1.6 and currently do not have any plans on upgrading for a bit as we JUST upgraded from PEGA 5.4.2 to 7.1.6 last month.
Pegasystems Inc.
US
Regarding your question, Pega 7.2 documentation should apply for 7.1.6 as well as they are mostly independent of pega platform. Which ones did you refer to? I can review them to make sure.
Cahaba GBA
US
I don't have any links, but looking through the 7.2 documentation there are several references to HA configurations, but not so much in 7.1.6 documentation.
This is what I am wanting to configure, I have been given approval to do a POC build, but I need to be sure PEGA will support this model if I get it working.
Pegasystems Inc.
US
Shaun,
The actual topology varies from enterprise to enterprise. Here is the doc you should follow: https://pdn.pega.com/documents/pega-72-high-availability-guide. Now looking at your chart, besides ODR which I am not aware of any successful deployment, you have a redzone firewall between app server and db server. This should be fine as long as both app server and db server are in the same subnet. Otherwise the performance becomes an issue. One thing you absolutely should avoid (I do not think that is your case, but want to bring out for the benefit of the community) is to host app server and db server in two data centers in spite of 'unlimited' bandwidth.