Hi Brian,
I am a beginner and have minimal knowledge about alertmanager. Could you
please provide me some guidance please.
I tried to add the subject in alertmanager.yml as below. But still no luck.
global:
resolve_timeout: 5m
smtp_smarthost: *********
smtp_auth_username: '*********'
smtp_auth_identity: '********'
smtp_auth_password: '******'
smtp_from: 'x...@gmail.com'
smtp_require_tls: false
route:
group_by: ['alertname']
group_wait: 10s
group_interval: 10s
repeat_interval: 24h
receiver: 'App-Kafka-Support'
receivers:
- name: 'App-Kafka-Support'
email_configs:
- to: 'x...@gmail.com'
send_resolved: true
headers:
subject: '{{ if eq .Status "firing" }} DOWN {{ else if eq .Status
"resolved" }} UP {{end}}'
Best Regards,
Suman
On Tuesday, November 23, 2021 at 2:10:17 PM UTC+5:30 Sri man wrote:
> Hello Brian,
>
> I have edited the default template as below.
>
> {{ define "__subject" }}[{{ if eq .Status "firing" }} "DOWN" {{ else }}
> "UP" {{ end }}] {{ .GroupLabels.SortedPairs.Values | join " " }} {{ if gt
> (len .CommonLabels) (len .GroupLabels) }}({{ with .CommonLabels.Remove
> .GroupLabels.Names }}{{ .Values | join " " }}{{ end }}){{ end }}{{ end }}
> {{ define "__description" }}{{ end }}
>
> But am getting the below error.
> ./amtool check-config /home/sam_r/alertmanager.yml
> Checking '/home/snr_r/alertmanager.yml' SUCCESS
> Found:
> - global config
> - route
> - 0 inhibit rules
> - 2 receivers
> - 1 templates
> FAILED: template: statuspal.tmpl:4: function "DOWN" not defined
>
> amtool: error: failed to validate 1 file(s)
>
> Could you please help me?
>
> Best Regards,
> Suman
>
>
>
> On Friday, November 19, 2021 at 3:03:08 PM UTC+5:30 Brian Candler wrote:
>
>> To replace any header with a new template, follow the documentation of
>> email_config here
>> <https://prometheus.io/docs/alerting/latest/configuration/#email_config>.
>>
>> # Further headers email header key/value pairs. Overrides any headers #
>> previously set by the notification implementation. [ headers: { <string>
>> <https://prometheus.io/docs/alerting/latest/configuration/#string>:
>> <tmpl_string>
>> <https://prometheus.io/docs/alerting/latest/configuration/#tmpl_string>,
>> ... } ]
>>
>> The default value comes from here
>> <https://github.com/prometheus/alertmanager/blob/main/template/default.tmpl#L80>
>> which
>> sets:
>> {{ define "email.default.subject" }}{{ template "__subject" . }}{{ end }}
>> That is, if you don't override it, then it uses the value of the
>> "__subject" variable, the definition of which I pointed you to before.
>>
>> On Friday, 19 November 2021 at 06:58:08 UTC muktha...@gmail.com wrote:
>>
>>>
>>> Hi Brian,
>>>
>>> Thanks for you inputs. Could you please help me where to add in and what
>>> to modify in the below line of code to get the email subject with the
>>> keyword "DOWN" for firing alerts and "UP" for resolved alerts.
>>>
>>> {{ define "__subject" }}[{{ .Status | toUpper }}{{ if eq .Status
>>> "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{
>>> .GroupLabels.SortedPairs.Values | join " " }} {{ if gt (len .CommonLabels)
>>> (len .GroupLabels) }}({{ with .CommonLabels.Remove .GroupLabels.Names }}{{
>>> .Values | join " " }}{{ end }}){{ end }}{{ end }}
>>>
>>> Best Regards,
>>> Suman
>>> On Thursday, November 18, 2021 at 5:24:53 PM UTC+5:30 Brian Candler
>>> wrote:
>>>
>>>> This is already done for you. With the default templates, the subject
>>>> line has a prefix like [FIRING:2] or [RESOLVED].
>>>>
>>>> However if your alerts are being grouped, and let's say one alert
>>>> resolves, then you might then get an E-mail with subject [FIRING:1] which
>>>> shows one alert still firing and one alert resolved. That is: a single
>>>> E-mail may contain both "DOWN" and "UP" notifications.
>>>>
>>>> You can change the templates if you like. There is documentation here
>>>> <https://prometheus.io/docs/alerting/latest/notifications/>. The
>>>> default subject line is created here
>>>> <https://github.com/prometheus/alertmanager/blob/main/template/default.tmpl#L4>
>>>> and
>>>> you can override this with your own template string.
>>>>
>>>> But to be honest, I've switched off all "resolved" notifications now.
>>>> There's a good explanation why here:
>>>>
>>>> https://www.robustperception.io/running-into-burning-buildings-because-the-fire-alarm-stopped
>>>>
>>>> In short: the fact that an alert condition has ceased is not an excuse
>>>> to your staff to say "oh that's OK, the problem has gone; I can ignore it
>>>> now". There *was* a problem and it *still* needs to be investigated. You
>>>> can use an alert to open a ticket, but you should close the ticket
>>>> manually.
>>>>
>>>> This document is also *very* well worth reading:
>>>>
>>>> https://docs.google.com/document/d/199PqyG3UsyXlwieHaqbGiWVa8eMWi8zzAn0YfcApr8Q/edit
>>>>
>>>> On Thursday, 18 November 2021 at 08:54:08 UTC muktha...@gmail.com
>>>> wrote:
>>>>
>>>>> Hi Team,
>>>>>
>>>>> I want to set the subject line in alertmanager based on send_resolved
>>>>> status. I mean before resolving the alert subject line should be "DOWN"
>>>>> and
>>>>> after resolving the alert subject line should be set to "UP".
>>>>>
>>>>> Could someone please guide me how to achieve this or provide me syntax
>>>>> please?
>>>>>
>>>>> Best Regards,
>>>>> Sriman
>>>>>
>>>>
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