ambari agent health

[#1]

Is there some api / endpoint exposed on the ambari agent that i can use to check if ambari agent is up / healthy & collect some stats

[#2]

@jabir ahmed

I think there is no api for ambari-agent health checkup - only you can see agent installation status using ambari api as mentioned -

https://cwiki.apache.org/confluence/display/AMBARI/Installing+ambari-agent+on+target+hosts

You might need to write custom script for the same.

Monitoring tools like nagios can track this.

[#3 · Accepted solution]

Each host has its own endpoint: api/v1/clusters/<clusterName>/hosts/<hostName>

From this, you can look at various parts of the JSON response:

"host_state": "HEALTHY",
"host_status": "HEALTHY",
"ip": "192.168.64.103",
"last_agent_env": {},
"last_heartbeat_time": 1460383979229,
"last_registration_time": 1460135920315,

The state will move from HEALTHY to HEARTBEAT_LOST (or something else like UNHEALTHY) when an agent can't communicate. Also, there is a host heartbeat alert (called Ambari Agent Heartbeat) which you can leverage to send emails or SNMP traps when the server can't communicate with an agent.