Home Assistant Grafana dashboard refresh rate

Third party integrations
1

I am searching a way to reduce the auto refresh rate in Grafana.
The lowest possible refresh rate you could choose is 5s.
I would like to refresh the Grafana dashboard inside Home Assistant every second.
Normally there is the /etc/grafana/grafana.ini file, where you can add the 1s refresh rate.
I searched it via SSH Addon but did not find anything. Does anyone know where this grafana.ini File is located inside Home Assistant (Hassio)? Thank you very mush in advance!

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2

You can change grafana settings in the addon configuration page environmental variables section. e.g. I have this to override the US date format:

env_vars:
  - name: GF_DATE_FORMATS_INTERVAL_HOUR
    value: DD/MM HH:mm
  - name: GF_DATE_FORMATS_INTERVAL_DAY
    value: DD/MM

You may be able to find the variables you need here:

https://grafana.com/docs/grafana/v7.5/administration/configuration/

However…Why do you need a 1s update?

That could put quite a load on your system.

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3

Thank you for your replay Tom!
I’ve tried it but it didn’t work.

I´ve changed it to

env_vars:
  - name: GF_MIN_REFRESH_INTERVAL
    value: 1s

as described in the documentation, but nothing changed after restart. I also tried out value: 10s, but nothing changed.

I would like to see directly the change of an temperature sensor in my system in Grafana.

4

Try:

env_vars:
  - name: GF_DASHBOARDS_MIN_REFRESH_INTERVAL
    value: 1s
5

Same thing, nothing changed.

6

Maybe you can only make it larger than 5s. Try 10s just to see what happens.

GF_<SectionName>_<KeyName> is the right format.

1 Like
7

You are right! it can’t be reduced lower than 5s (tried 1-4s). If it set to 10s it will change. what a pity.

8

I’m curious, what’s the use case and what kind of sensor do you use that has an update interval of 1 second?

9

I was able to get a 1s refresh interval with adding both settings

env_vars:
  - name: GF_MIN_REFRESH_INTERVAL
    value: 1s
  - name: GF_DASHBOARDS_MIN_REFRESH_INTERVAL
    value: 1s

And then also adding 1s to the list of intervals available in the dashboard:
image

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