Elasticsearch fail-over questions
I am installing Elasticsearch as part of a Peopletools upgrade. Our use case is Peoplesoft CRM application using solutions and ERMS functions. I am following "Implementing Fail-over Mechanism Using PeopleSoft Search Framework’s Multiple Search Instance Feature".
The constraint that I have - two data centers, with only one server at each data center.
Questions I need help with
Is it wise to setup multiple nodes on the same server, or will each node consume high memory?
Do I setup additional nodes by re-running the DPK setup program but specific different ports? Any other changes I need to make?
Given existing one server at each of two data centers, is there a better way to implement failover?