Actual alert repeat_interval = group_interval + repeat_interval ?

[Puneet Singh]

Hi All,
I am facing an issue with the latest version of Alert manager.
I have a group_interval which is a perfect divisor of repeat_interval
group_interval: 1h
repeat_interval: 4h

in the aforementioned setting , i get repeated alerts after 5 hours ( if no new alerts are added) which is contrary to what i expected.


After countless keystrokes in google search bar, i came across an issue which mirrors what i am experiencing with Alert manager. - 
https://github.com/prometheus/alertmanager/issues/2320

There is no response from the developers on this post.


Seems i need to try 
group_interval: 1m
repeat_interval: 4h
to get as close as possible (4 hour 1 minute)

 but with this setting i may end up spamming alert receivers -  with updates every 1 minutes in worst case scenario.

Is there a way out ? Please advice.

Thanks , 
Puneet

[Brian Candler]

Not wanting to state the obvious, but have you tried

group_interval: 1h

repeat_interval: 3h

?