This could be many things, likely it has to do with the formulation of the
alert. What does it look like in Prometheus? Specifically

- the ALERTS metric shows what is pending or firing over time
- evaluate the alert expression in Prometheus for the given time period.
Are there gaps or does e.g. a label change between before and after the gap?

/MR

On Wed, Nov 25, 2020 at 11:01 AM [email protected] <
[email protected]> wrote:

>
> Hi. I am using Alertmanager 0.21.0. Occasionally, the active alerts go to
> resolved state for a second and then come back to firing state immediately.
> There is no pattern of this happening, it happens randomly. Haven't been
> able to identify why this is happening.
> Any thoughts here? Where should I start to look for this? Checked
> Alertmanager's logs, everything seems normal.
>
> Thanks in advance!
>
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