My Ganglia server host was messed up. After cleaning up that machine, the dashboard works ok now.
Seems like no need to disable IPV6, I have IPV 6 enabled on all hosts in the cluster and dashboard does show metrics and graph. I am using Ambari v1.7 Thanks, -Tao From: João Alves [mailto:j...@5dlab.com] Sent: Tuesday, February 03, 2015 4:49 AM To: user@ambari.apache.org Subject: Re: Ambari dashboard display no data Hey, Have you checked your hosts configuration? Try and disable IPV6. Regards, João On 30 Jan 2015, at 19:19, Yu, Tao <ta...@aware.com<mailto:ta...@aware.com>> wrote: Thanks Yusaku! 1. httpd is running on vm-galaxy04.aware.com<http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1>. 2. curl http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1 fails from Ambari server host, with error message “couldn’t connect to host” 3. http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1 cannot load any page either. Any suggestion? -Tao From: Yusaku Sako [mailto:yus...@hortonworks.com] Sent: Friday, January 30, 2015 1:08 PM To: 'user@ambari.apache.org<mailto:user@ambari.apache.org>' Subject: Re: Ambari dashboard display no data Hi, Is httpd running on vm-galaxy04.aware.com<http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1>? Does this work from the Ambari server host? curl http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1 Also, can you hit http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1 from the browser? Do you see anything? Yusaku From: <Yu>, Tao <ta...@aware.com<mailto:ta...@aware.com>> Reply-To: "'user@ambari.apache.org<mailto:'user@ambari.apache.org>'" <user@ambari.apache.org<mailto:user@ambari.apache.org>> Date: Friday, January 30, 2015 7:04 AM To: "'user@ambari.apache.org<mailto:'user@ambari.apache.org>'" <user@ambari.apache.org<mailto:user@ambari.apache.org>> Subject: RE: Ambari dashboard display no data More info about this dashboard “no metrics” issue: I restarted Ganglia server and monitor from Ambari Web UI (from each host) successfully. On Ganglia server host, I run command “service hdp-gmond status”, and get response like this: ======================================= Checking status of hdp-gmond... ======================================= /usr/sbin/gmond for cluster HDPSlaves running with PID 30136 /usr/sbin/gmond for cluster HDPNimbus running with PID 30164 /usr/sbin/gmond for cluster HDPSupervisor running with PID 30192 So I believe all 3 gmond services are up and running properly. Also on Ganglia server (gmetad) host, I can see all metrics rrd files (like cpu_num.rrd, disk_free.rrd, etc) are under /var/lib/ganglia/rrds. But still, dashboard does not show any graph, instead only display “No Data. There was no data available. Possible reasons include inaccessible Ganglia service.” Any advice? From: Yu, Tao [mailto:ta...@aware.com] Sent: Thursday, January 29, 2015 11:24 AM To: 'user@ambari.apache.org<mailto:'user@ambari.apache.org>' Subject: Ambari dashboard display no data Hi all, I have a newly installed HDP-2.2 on a small cluster (2 hosts). The installation ( via install wizard), including services like Ganglia / Zookeeper / Storm etc, went smoothly (CentOS 6.5) and ambari-server and all desired services are up and running. But when I login to the Ambari web UI, the dashboard shows nothing for any of the standard Metrics (Memory / Network / CPU /Cluster load), instead the UI shows below message: No data There was no data available. Possible reasons include inaccessible Ganglia service I then checked both hosts where Ganglia server daemon (gmetad) and client daemon (gmond) run, all daemons are running: #ps –ef |grep gmetad nobody 31970 1 0 10:38 ? 00:00:02 /usr/sbin/gmetad --conf=/etc/ganglia/hdp/gmetad.conf --pid-file=/var/run/ganglia/hdp/gmetad.pid #ps –ef | grep gmond nobody 13681 1 0 10:38 ? 00:00:19 /usr/sbin/gmond --conf=/etc/ganglia/hdp/HDPSlaves/gmond.core.conf --pid-file=/var/run/ganglia/hdp/HDPSlaves/gmond.pid But when I check the ambari-server.log, got some ERROR message with Java exception: ERROR [qtp1835310612-22] GangliaReportPropertyProvider:153 - Caught exception getting Ganglia metrics : java.net.ConnectException: Connection refused : spec=http://vm-galaxy04.aware.com/ganglia/graph.php?g=cpu_report&json=1 The ERROR message seems like network connection issue, but the hosts look OK in the network. I have tried restarting Ganglia services with no luck, restarted all services but still the same. Does anyone have any ideas how I solve the Java Exception and get the dashboard to work properly? Thank you!
