How to get a health status of splund (via GUI) and basics of troubleshooting it.

[SamHTexas]

How to get a health status (via GUI) and basics of troubleshooting it. Also please advise on how to check Splunk Ent. & ES heart beats making sure they are alive & kicking? For my daily checks.Thanks

[richgalloway]

Start with 

| rest /services/server/health

What would tell you that Splunk and ES are "alive and kicking"?