Grafana 502 with msg="Request Completed" when sending /query or /query_range to Thanos

Grafana
1

Hi,

I’m seeing this 502 errors in Grafana log and would like to understand what is going on:

t=2021-02-04T16:32:10+0000 lvl=info msg=“Request Completed” logger=context userId=86 orgId=1 uname=shen.wan method=POST path=/api/datasources/proxy/45/api/v1/query_range status=502 remote_addr=10.40.44.22 time_ms=598 size=0 referer=“https://grafana.myorg.internal/d/yAZ-vPBMk/grafana?orgId=1&refresh=1m”

There are usually ~10 identical log entries (except the time_ms field) like this within a second.

We deploy Grafana to query Thanos in GKE. In Envoy we do not see 502, just 500 and

DC: Downstream connection termination.

Does Grafana terminate the connection and somehow changed 500 to 502? And why it says “Request Completed”? Does it get full or partial result?

2

Hi,

There some related issues on GitHub like this one :

Can you specify grafana version you are using ?

Good Luck

3

please update to the latest version of grafana

4

Our Grafana version is v7.1.2. Is this a known bug and upgrade would fix it?

5

Hi,

As you can see in GitHub, The issue was closed on November 20 and marked as done, so you should go with newer version to test that.

Good Luck

6

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