Thanks for reply,
am new to jira data center. before installing jira in jira data center. i need to know how is jira data center working. how to set nodes and load balancer before installing jira. and in my client we have already jira data center working on 1 node. i need to setup new server in node 1 and i need to setup node2 also and i have replicate to node 2 from node 1.
thanks.
Have a look at https://confluence.atlassian.com/adminjiraserver/installing-jira-data-center-938846870.html and focus on step 5 for adding more nodes.