Send host name with Alert

Grafana Alerting
1

Hello, I wanted to send the hostname of an alerted host with the e-mail, and I stumbled up on to use something like this in the alert description:
Host: {{ $values.B0.value.labels.host }}

But if an alert triggers, it will just write the literal “{{ $values.B0.value.labels.host }}” instead of the hostname. Trying just $values.B0.labels.host gave me a “<no value”

I heard there are alert templates, but I just want to add one variable and not re-write the whole alert e-mail.

2

Hi @madddogg2406,
If you are using Reduce expression in your alert try this:

{{ $values.B.Labels.host }}

If you are using Classic condition expression try this:

{{ $values.B0.Labels.host }}

Best regards,
ldrascic

3

Ah okay I will try this. Is a Threshold also a B0 or a B?

4

Hi! If it helps the documentation for this can be found here Templating labels and annotations | Grafana documentation, including for Classic Conditions.

To answer the question it is just Classic Conditions that use B0 , B1, etc. Reduce, Threshold and Math expressions do not. This is because each individual Classic Condition can contain multiple conditions.

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