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When the hostname is mixed like: GRAFANA-hdp253-s1.openstacklocal GRAFANA-hdp253-s1 GRAFANA-hdp253-s2.openstacklocal GRAFANA-hdp253-s2 GRAFANA-hdp253-s3.openstacklocal GRAFANA-hdp253-s3 

Ambari creates the datasource with a lower case hostname:


Once you enter the hostname with mixed case, Grafana works:



Grafana 2.6.0 backend uses Go 1.5. Go's DNS lookup had a bug where the look up is case sensitive:

We can manual workaround by using the original casing in the Grafana Data Source URL as mentioned in the description. Another workaround is to update the /etc/hosts file to have all lowercase patterns as well. This bug was fixed in Go 1.6, so we will no longer have this issue once we upgrade Grafana to a later version (say 4.1.x) in a future version of Ambari.

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Last update:
‎09-16-2022 01:40 AM
Updated by:
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