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Configuring Ambari Metrics service in distributed mode

 

since metrics take space on the local disk ,

 

we want to move to distributed mode , so metrics data will be on HDFS and not on local disk

 

we start to work according to the link - https://cwiki.apache.org/confluence/display/AMBARI/AMS+-+distributed+mode

 

we are using ambari cluster 2.6.4 with active/stand by name node

 

Capture.PNG

 

so we start the configuration 

 

first we set in ambari the following 

 

 ams-site, Set timeline.metrics.service.operation.mode = distributed

 

now  we need to Edit ams-hbase-site,

 

hdfs://<nameservice-id>/user/ams/hbase 

 

the question is - how to find the nameservice-id ?

 

since we have active/stand by name node

 

then how to know the - nameservice-id value?

 

 

 

 

 

 

Michael-Bronson
1 ACCEPTED SOLUTION

Mentor

@mike_bronson7 

 

When your cluster is in HA it uses a namespace that acts as a load balancer to facilitate the switch from active to standby and vice versa.

The dfs-site-xml holds these values  filter using  dfs.nameservices  the nameservice-id  should be your namespace or in HA look for dfs.ha.namenodes.[nameservice ID]

 

dfs.ha.namenodes.[nameservice ID]  e.g dfs.ha.namenodes.mycluster

 

And that's the value to set  eg 

 

hdfs://mycluster_namespace/user/ams/hbase

 

The refresh the stale configs , now HBase should sending the metrics  to that directory 

HTH

 

View solution in original post

1 REPLY 1

Mentor

@mike_bronson7 

 

When your cluster is in HA it uses a namespace that acts as a load balancer to facilitate the switch from active to standby and vice versa.

The dfs-site-xml holds these values  filter using  dfs.nameservices  the nameservice-id  should be your namespace or in HA look for dfs.ha.namenodes.[nameservice ID]

 

dfs.ha.namenodes.[nameservice ID]  e.g dfs.ha.namenodes.mycluster

 

And that's the value to set  eg 

 

hdfs://mycluster_namespace/user/ams/hbase

 

The refresh the stale configs , now HBase should sending the metrics  to that directory 

HTH

 

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