Support Questions
Find answers, ask questions, and share your expertise
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.

Where to install Ambari Metrics Collector


Where to install Ambari Metrics Collector

New Contributor



we run a cluster with 2 namenodes in HA mode and some datanodes
and also HBase with 2 HBase master and some regionserver installed on the datanodes.

On a separate master host I have the Ambari Metrics Collector running in distributed mode.


timeline.metrics.service.operation.mode = distributed
hbase.cluster.distributed = true
hbase.rootdir = hdfs://cluster/apps/ams/metrics


I only have "HBase Client" and "HDFS Client" component installed on that node.


Ambari gives me warning that I should install datanode components on that node:

#"It's recommended to install Datanode component on host.domain.tld to speed up IO operations between HDFS and Metrics Collector in distributed mode"#

On I found the following statement:

#"Note: Make sure there is a local Datanode hosted with the Collector, it provides AMS HBase the distinct advantage of write and reads sharded across the data volumes available to the DN."#


What does that mean? Should I install a datanode without
any data disk configured on the node running Ambari Metrics Collector, or should I move the
"Ambari Metrics Collector" on an existing datanode?


I there a best practice how to distribute the services on the cluster hosts?


Regars Elmar


Re: Where to install Ambari Metrics Collector


hi elmar

the best way to distribute your services is using 4 machines  in your case 

just add the services and ambari will distribute them thru the 4 machines.


first machine : primary namenode hbase zookeeper ...

second machine : secondary namenode and any services you want (hive for example)

third machine : ambari metrics collector

forth machine : data node (check client box in installation steps)

answer is tested 

best regards.


Don't have an account?
Coming from Hortonworks? Activate your account here