How to set up HIGH AVAILABLITY for applications

Question

I am currently trying to build high availability for all the applications that my company is building..

all the applications are currently in AWS..

I want to use ELB to do this..

For example.. Confluence

So far.. I have exact same configuration files (installation directories and Home-directories) in 2 servers

I was using one server until now..

When i try to access to the second server.. it is asking me to rebuild (even with all the same files)..

in this case.. do i have to create another database for it?

how does Load Balancer work for this applications?

Nic Brough -Adaptavist- · Answer

Two options
1) Go to Confluence Data Centre instead ( See https://www.atlassian.com/enterprise/data-center/ )
2) Accept that you can NOT cluster/load balance Confluence and build a system that is as close as you can get.

On point 2, the best you can do is to have an active/passive config.  One active Confluence server running normally, and a second *offline*.  You can replicate the database behind them, and a lot of the data so that your failover process is "stop broken Confluence, flip the database from passive to activer, start second Confluence and re-index it", but you can't do active-active  (You can, of course stick this behind a load balancer to handle traffic during failover)

Young Hahn · Answer

@Nic Brough [Adaptavist] I am using the server.. 
so what will be the best way to do Confluence HA?

Nic Brough -Adaptavist- · Answer

Really simple question to get us started - are you using Confluence Server, or Confluence Data Centre?

(And a partial answer - if it's Confluence server, you can NOT do load balancing...)