It's clear that the config
- service=~"mysql|cassandra"
does not match the rule.
This was just an example.
But this question is still open:
What must the alertmanager config be for this rule?
groups:
- name: general.rules
rules:
- alert: TargetDown
annotations:
message: '{{ printf "%.4g" $value }}% of the {{ $labels.job }}/{{
$labels.instance
}} instances are down.'
expr: 100 * (count(up == 0) BY (job, instance) / count(up) BY (job,
instance)) > 10
for: 10m
labels:
severity: warning
Brian Candler schrieb am Donnerstag, 2. September 2021 um 19:18:37 UTC+2:
> Remove the match on service=~"mysql|cassandra" in your routing rule.
>
> I'm not saying with 100% certainty that your alert *doesn't* have a
> service=xxx label; it's possible that it was added via other means, such as
> external_labels or alert_relabel_configs. If you go into the prometheus or
> alertmanager web interface, you can see active alerts and their labels, so
> you'll know what you have.
>
> There was a nice web-based interface for testing alerting rules here:
> https://prometheus.io/webtools/alerting/routing-tree-editor/
> but it doesn't seem to work properly any more.
>
> On Thursday, 2 September 2021 at 15:48:57 UTC+1 [email protected] wrote:
>
>> What should be the configuration in alertmanager.yml to match to the rule?
>>
>> Brian Candler schrieb am Donnerstag, 2. September 2021 um 15:22:55 UTC+2:
>>
>>> Correct, that expression will only give "job" and "instance" labels.
>>>
>>> I don't think your alertmanager rule will ever match on this alert.
>>>
>>> On Thursday, 2 September 2021 at 14:05:22 UTC+1 [email protected] wrote:
>>>
>>>> Hello,
>>>>
>>>> I have defined several rule files, e.g. this general.rules.yml:
>>>> groups:
>>>> - name: general.rules
>>>> rules:
>>>> - alert: TargetDown
>>>> annotations:
>>>> message: '{{ printf "%.4g" $value }}% of the {{ $labels.job }}/{{
>>>> $labels.instance
>>>> }} instances are down.'
>>>> expr: 100 * (count(up == 0) BY (job, instance) / count(up) BY (job,
>>>> instance)) > 10
>>>> for: 10m
>>>> labels:
>>>> severity: warning
>>>>
>>>> However, I don't see the correlation to service.
>>>>
>>>> Brian Candler schrieb am Donnerstag, 2. September 2021 um 13:58:11
>>>> UTC+2:
>>>>
>>>>> It looks like "service" is a label that you have set in the prometheus
>>>>> alerting rule.
>>>>>
>>>>> On Thursday, 2 September 2021 at 11:52:20 UTC+1 [email protected]
>>>>> wrote:
>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> can you please advise what is represented by a service in
>>>>>> alertmanager configuration, e.g.
>>>>>> routes:
>>>>>> # All alerts with service=mysql or service=cassandra
>>>>>> # are dispatched to the database pager. - receiver: 'database-pager'
>>>>>> group_wait: 10s matchers:
>>>>>> - service=~"mysql|cassandra"
>>>>>>
>>>>>> Where do I find the service in the rules or in Prometheus -> Alerts?
>>>>>>
>>>>>> THX
>>>>>>
>>>>>
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