I have 2 apps servers and 2 WFE servers, I would like to have high availability configuration for SharePoint central admin. So that if one apps server goes down, another apps server will be active. I need to know steps to configure this topology. Do I need to host CA in both the apps server?
You need to follow these steps.
- configure the central admin on both app server
- edit the AAM settings
- make a registry change
- now setup dns record
- configure the load balancer
Read complete blog here, this is valid for 2013. http://www.harbar.net/articles/spca.aspx