Parent Service resource doesn't exist

[mikehomee]

Hi!

I'm having an issue using it, it's prompting me error below.

From WebUI
Parent Service resource doesn't exist.
Service not found, clusterName=MyCluster, serviceName=undefined.
Service not found, clusterName=MyCluster, serviceName=undefined.

From Grafana Logs
2016/05/19 10:00:08 [I] Completed 192.168.242.10 - "GET /api/v1/clusters/MyCluster/services/undefined/components/undefined HTTP/1.1" 404 Not Found 201 bytes in 11404us
2016/05/19 10:00:11 [I] Completed 192.168.242.10 - "GET /api/v1/clusters/MyCluster/services/undefined/components/undefined HTTP/1.1" 404 Not Found 201 bytes in 10980us
2016/05/19 10:00:13 [I] Completed 192.168.242.10 - "GET /api/v1/clusters/MyCluster/services/undefined/components/undefined HTTP/1.1" 404 Not Found 201 bytes in 11137us

Please help.
Thank you!

[mikehomee]

BTW, I'm trying to display graphs from Kafka Component.
Namenode seems to be working though. :)

Please help.

Thank you!

[prajwalrao]

@mikehomee What version of Ambari are you running?

[mikehomee]

Hi @prajwalrao

I'm using Ambari 2.2.0 via HDP-2.3.2

[prajwalrao]

Do you see anything when you try accessing this endpoint via browser?

http://ambari-host:port/api/v1/clusters/MyCluster/services/KAFKA/components/KAFKA_BROKER

[mikehomee]

Yes.

{
"href": "http://myserver.local.com:8080/api/v1/clusters/MyCluster/services/KAFKA/components/KAFKA_BROKER",
"ServiceComponentInfo": {
"category": "MASTER",
"cluster_name": "MyCluster",
"component_name": "KAFKA_BROKER",
"installed_count": 0,
"service_name": "KAFKA",
"started_count": 1,
"state": "STARTED",
"total_count": 1
},
"host_components": [
{
"href": "http://myserver.local.com:8080/api/v1/clusters/MyCluster/hosts/mykafka.local.com/host_components/KAFKA_BROKER",
"HostRoles": {
"cluster_name": "MyCluster",
"component_name": "KAFKA_BROKER",
"host_name": "mykafka.local.com"
}
}
]
}

[prajwalrao]

@mikehomee As you can see, there are no metrics being emitted, which is why you see an error in Grafana logs.

http://ambari-host:port/api/v1/clusters/MyCluster/services/HDFS/components/NAMENODE

For example will show you the list of Namenode metrics (see the object array after "ServiceComponentInfo") that are exposed to the Ambari API, and therefore can be visualized via Grafana

[mikehomee]

I see the differences now. Will check the ambari-metrics on kafka brokers.

Thank you, @prajwalrao

[prajwalrao]

No problem @mikehomee Glad I could help :) You could use Ambari 2.2.2 (which comes with an AMS Datasource for Grafana ) and use it to visualize Kafka Metrics. » Ambari 2.2.2