We have done extensive debugging on this, and our graphite server is not the culprit.
I did not say the Graphite server was the culprit. The graphite server returns "400 BAD REQUEST", which is why I asked you to inspect its logs. Specifically, I would be interested in knowing which request from NAV that caused it to report this.
According to the sysadmin responsible for graphite, the request never reaches the graphite api.
This is the faulty request which generates the errors: https://nav.uio.no/graphite/render?format=json&from=-5min&until=now
The request does not contain a target.
best regards Andreas Dobloug USIT/UiO