Avoid pagerduty alerts duplication

[helgharbi]

Enhancement Proposal

When using pagerduty_configs with alert manager alertmanager.

Raised pagerduty alerts are not using dedupication key to correlating triggers and resolves.
Causing a new alerts to be trigered every interval and alerts are never resolved.

See dedup_key usage here:

dedup_key (String): Deduplication key for correlating triggers and resolves

[sed-i]

In order to avoid duplicating alerts, the repeat interval key needs to be set to a large value to suppress additional messages.
As for dedup_key and resolution - these could be raised as a feature request for cos-alerter to add native pagerduty support.

[simskij]

In order to avoid duplicating alerts, the repeat interval key needs to be set to a large value to suppress additional messages.

This is not a viable solution.

As for dedup_key and resolution - these could be raised as a feature request for cos-alerter to add native pagerduty support.

However, this is :)