Why Alertmanager failed to send alerts to slack

Question

I have created alerts, that fires and can be seen in Alertmanager. So previously I was able to get notifications to the Slack channel. I don't know what caused the issue, now unable to get notifications. I have gone through this Prometheus alert manager doesnt send alert k8s, but didn't find a way. Any help would be appreciated.

alertmanager.yaml

global:
  slack_api_url: 'https://hooks.slack.com/services/some-dummy'
route:
  group_by: [Alertname]
  # Send all notifications to me.
  receiver: 'slack notifications'
receivers:
  - name: 'slack notifications'
    slack_configs:
      - channel: '#alerts'
        text: "{{ .Annotations.summary }}\n{{ .Annotations.description }}\n{{ end }}"

Prometheus UI enter image description here

log says issue with {{ .Annotations.summary }} and {{ .Annotations.description}}. failed to parse. @JensBaitinger — Aksahy Awate, Feb 03 '21 at 02:52
Totally not related, but might be helpful. YAML supports multiline strings: https://yaml-multiline.info/. You won't need to put everything in a single line and use `\n` as new-line character. — Evaldas Buinauskas, Feb 05 '21 at 08:11

score 0 · Answer 1 · answered Feb 05 '21 at 07:57

0

remove the {{ end }}, there mighte have been a {{ range .Alerts }} in the begining, but withot that, the {{ end }} does not make sense.

answered Feb 05 '21 at 07:57

Jens Baitinger

449
2
8

score 0 · Answer 2 · answered May 12 '22 at 17:18

0

receivers:
  - name: 'default-receiver'
    slack_configs:
    - channel: 'alerts'
    - title: "{{ range .Alerts }}{{ .Annotations.summary }}\n{{ end }}"
    - text: "{{ range .Alerts }}{{ .Annotations.description }}\n{{ end }}"

answered May 12 '22 at 17:18

yan

1,382
14
11

Why Alertmanager failed to send alerts to slack

2 Answers2