Add host to Ambari Alerts group that is not managed by Ambari

[#1]

Are there API calls or other capability to add a non-Ambari managed instance to an Alert group? For example, I would like to add a Knox instance to the existing Knox Alerts group. I thought I could add by hostname but realized that I cannot.

[#2 · Accepted solution]

No, there's a lot more going on under the hood and Ambari Agent is required for operations. Essentially, bring a node into a cluster (agent is installed) and provision only the services desired (e.g. only Knox).