grafana failed to start

[#1]

grafana can not start and made an alert in ambari.

[root@compute-1-0 ~]# /usr/sbin/ambari-metrics-grafana restartStopping Ambari Metrics Grafana ...OK

Starting Ambari Metrics Grafana: .... FAILED

and metrics collector process failed in ambari: (see this.)

Connection failed: [Errno 111] Connection refused to compute-1-6.local:6188

[#2]

@Daniel Allardice

Grafana fetches data from AMS collector which runs n default port 6188. So can you please check if From the Grafana Host ambari Metrics Collector Host&port is reachable or not?

Example: From Grafana Host run the following, It will help in isolating two things

1. Grafana Host is able to resolve the hostname "compute-1-6.local" properly. (checking the /etc/hosts entry will help)

2. There is no Firewall issue which is restricting access on port 6188

telnet  compute-1-6.local    6188

.

And from Ambari Metrics Collector Host check if it has the correct hostname and port is opened?

# echo "On AMS host"
hostname -f
netstat -tnlpa | grep 6188