Health check for Jira, Confluence and Crowd server

The customer’s operations needs to monitor Jira, Confluence and Crowd health-status. Is it sufficient to monitor the /status page? Does the /status change to Error in case for example the database i down?

I have read the following so far:

https://confluence.atlassian.com/enterprise/jira-data-center-load-balancer-examples-781200827.html?_ga=2.83195542.185652523.1512462055-365099678.1510735244

But neither clearly states when Error is returned.

Found out the following can be used for Jira:
/rest/api/latest/serverInfo?doHealthCheck=true

Haven’t found an equivalent for Confluence or Crowd yet