[Ambari 1.6.1, HDP 2.1, CentOS 6.5, multi-node cluster]On a fresh install, not
all metrics are getting populated in Ambari. Some of the missing metrics
include:Dashboard: Namenode CPU WIO (displays "n/a" instead)HDFS: All metrics
except HDFS I/O (displays "No Data. There was no data available Possible
reasons include inaccessible Ganglia service")YARN: All metrics (displays "No
Data. There was no data available Possible reasons include inaccessible Ganglia
service")The ideas suggested in the following two threads have not helped to
resolve the issue:Hortonworks forum post Ambari mailing list post
ambari-server.log shows the following warnings and errors (/var/log/messages
has no Ganglia specific errors):16:12:52,905 WARN [Thread-1]
HeartbeatMonitor:126 - Heartbeat lost from host
localhost.localdomain16:13:28,435 ERROR [pool-1-thread-6163]
JMXPropertyProvider:540 - Caught exception getting JMX metrics : Server
returned HTTP response code: 500 for URL:
http://namenode.localdomain:8745/api/cluster/summaryAny suggestions on how to
identify the cause and resolve this issue ?Thanks.Note: Cross-posted to
Hortonworks forums.
