OMD with victoriametrics db shows errors in grafana histou panel #240

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1. sni commented on Oct 5, 2026

   

   sni

   on Oct 5, 2026

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   there can only be one default datasource, so i'd assume this will very likely break something.
2. jstark1 commented on Oct 6, 2026

   

   jstark1

   on Oct 6, 2026

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   Yes, there can only be one default data source in the provisioned datasources file.

   here a some screenshots:
   nagflux (influxdb) as default datasource
   

   no configured default datasource
   

   victoriametrics as default datasource
   

   i deleted the old datasource with:
   etc/grafana/provisioning/datasources/delete_old_influx_nagflux.yml

   apiVersion: 1
   
   deleteDatasources:
     - name:  nagflux
       orgId: 1
   

   etc/grafana/provisioning/datasources/delete_old_influx_internal.yml

   apiVersion: 1
   
   deleteDatasources:
     - name:  _internal
       orgId: 1
   

   etc/grafana/provisioning/datasources/delete_old_influx_sakuli.yml

   apiVersion: 1
   
   deleteDatasources:
     - name:  sakuli
       orgId: 1
   

   and set isDefault: true in etc/grafana/provisioning/datasources/victoriametrics.yml

   omd restart grafana
   grafanactl datasource
     name: pnp          type: sni-pnp-datasource database:        access: proxy    url: https://127.0.0.1:5000/test/pnp4nagios
     name: thruk        type: sni-thruk-datasource database:        access: proxy    url: https://127.0.0.1:5000/test/thruk
   * name: victoriametrics type: prometheus database:        access: proxy    url: http://127.0.0.1:8431
   

   so everything looks good from my side.

   In OMD the influxdb datasource i the only one that sets "isDefault: true".
   find /omd/versions/default/skel/ -name "datasource.yml" -exec grep "isDefault" {} +
   /omd/versions/default/skel/etc/victoriametrics/grafana_datasources.yml: isDefault: false
   /omd/versions/default/skel/etc/influxdb/grafana_datasources.yml: isDefault: true
   /omd/versions/default/skel/etc/influxdb/grafana_datasources.yml: isDefault: false
   /omd/versions/default/skel/etc/influxdb/grafana_datasources.yml: isDefault: false
   /omd/versions/default/skel/etc/thruk/grafana_datasource.yml: isDefault: false
   /omd/versions/default/skel/etc/promxy/grafana_datasource.yml: isDefault: false
   /omd/versions/default/skel/etc/prometheus/grafana_datasources.yml: isDefault: false
   /omd/versions/default/skel/etc/loki/grafana_datasource.yml: isDefault: false
   /omd/versions/default/skel/etc/loki/grafana_datasource.yml: isDefault: false
   /omd/versions/default/skel/etc/pnp4nagios/grafana_datasource.yml: isDefault: false

   I dont now i it useful to invest in a "default datasource" trigger in omd.

   We are confident that this issue is a corner case caused by our migration from InfluxDB to Victoriametrics, which did not change the default data source.
   I assume that Grafana 13 uses the default data source for some tasks in scripted dashboards. However, as discussed , we must replace this feature anyway.