We have self hosted Jira Software Data Center license and on version 7.12.1.
Our Server set up is Linux based OS with 2 App Servers (Virtual Servers) with Load Balancer and Oracle Db. Currently we are using only single App Server.
Our requirement is to set up server such that both the servers are active and open for traffic and Load balancer routes the user request to either of the server depending on the load.
What can be the best approach to set up the application?
@Sanil Panicker, you should have the ability to which web servers you send traffic too within your load balancer. Not sure what you are using but its there. Assuming you have datacenter installed and configured correctly, it should just work. Make sure you configure sticky sessions on your load balancer too.
We can't provide help on setting up your load balancer without knowing what load balancer you're using (ELB, nginx+, HA Proxy, etc). Some general guidelines are at Jira Data Center Load Balancer examples and Load balancer configuration options.
The home directory for Data Center installations is split up a bit. In Jira Software, it's all one directory. In Data Center, there's a local cache on each node and then a shared NFS location for the attachments and plugins. Details on that are available starting at Step 2 on the Installing Jira Data Center document.
Finally, I'd recommend reaching out to a solution partner if you'd like some hands-on assistance setting up multiple nodes in your Data Center instance. Getting this right the first time can be tricky if you're not familiar with the individual pieces and it sounds like you're already using it in production. We're happy to help on Community, but if uptime is a concern I'd recommend having someone help out in your actual environment to keep things stable while you scale out.