# How to customize slack alert message?

**URL:** <https://forums.percona.com/t/how-to-customize-slack-alert-message/15140>\
**Category:** Percona Monitoring and Management (PMM)\
**Tags:** pmm\
**Created:** [April 7, 2022, 10:22am UTC](https://forums.percona.com/t/how-to-customize-slack-alert-message/15140 "2022-04-07T10:22:00Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Luke03011](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/luke03011/32/16409_2.png) [@Luke03011](https://forums.percona.com/u/Luke03011)\
**Post date:** [April 7, 2022, 10:22am UTC](https://forums.percona.com/t/how-to-customize-slack-alert-message/15140/1 "2022-04-07T10:22:00Z")

</div>

I find the slack alert configuration file is /etc/alertmanager.yml and the heading line saying

```auto
Managed by pmm-managed. DO NOT EDIT

```

So editing this file directly will not work.

And the alert message template is defined in this file as:

```auto
receivers:
    - name: empty
    - name: disabled
    - name: /channel_id/b508fbb6-3479-42ff-b6de-8429a199f36d
      slack_configs:
        - send_resolved: true
          channel: slack-ch2
          title: '[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}]'
          text: |-
            {{ range .Alerts -}}
            *Alert:* {{ if .Labels.severity }}`{{ .Labels.severity | toUpper }}`{{ end }} {{ .Annotations.summary }}
            *Description:* {{ .Annotations.description }}
            *Details:*
            {{ if .Labels.node_name }} • *node_name:* `{{ .Labels.node_name }}`
            {{ end }}{{ if .Labels.node_id }} • *node_id:* `{{ .Labels.node_id }}`
            {{ end }}{{ if .Labels.service_name }} • *service_name:* `{{ .Labels.service_name }}`
            {{ end }}{{ if .Labels.service_id }} • *service_id:* `{{ .Labels.service_id }}`
            {{ end }}{{ if .Labels.service_type }} • *service_type:* `{{ .Labels.service_type }}`
            {{ end }}{{ if .Labels.rule_id }} • *rule_id:* `{{ .Labels.rule_id }}`
            {{ end }}{{ if .Labels.alertgroup }} • *alertgroup:* `{{ .Labels.alertgroup }}`
            {{ end }}{{ if .Labels.template_name }} • *template_name:* `{{ .Labels.template_name }}`
            {{ end }}{{ if .Labels.severity }} • *severity:* `{{ .Labels.severity }}`
            {{ end }}{{ if .Labels.agent_id }} • *agent_id:* `{{ .Labels.agent_id }}`
            {{ end }}{{ if .Labels.agent_type }} • *agent_type:* `{{ .Labels.agent_type }}`
            {{ end }}{{ if .Labels.job }} • *job:* `{{ .Labels.job }}`
            {{ end }}

            {{ end }}

```

How can I customize the “text” field of the slack alert message? Thanks.

---

<div class="post-metadata">

**Author:** ![Luke03011](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/luke03011/32/16409_2.png) [@Luke03011](https://forums.percona.com/u/Luke03011)\
**Post date:** [April 8, 2022, 2:54am UTC](https://forums.percona.com/t/how-to-customize-slack-alert-message/15140/2 "2022-04-08T02:54:52Z")

</div>

I find the alert message is hardcoded in the code services/alertmanager/alertmanager.go::formatSlackText:

```auto
func formatSlackText(labels ...string) string {
	const listEntryFormat = "{{ if .Labels.%[1]s }} • *%[1]s:* `{{ .Labels.%[1]s }}`\n{{ end }}"

	text := "{{ range .Alerts -}}\n" +
		"*Alert:* {{ if .Labels.severity }}`{{ .Labels.severity | toUpper }}`{{ end }} {{ .Annotations.summary }}\n" +
		"*Description:* {{ .Annotations.description }}\n" +
		"*Details:*\n"
	for _, l := range labels {
		text += fmt.Sprintf(listEntryFormat, l)
	}

	text += "\n\n{{ end }}"

	return text
}

```

I can modify this file but I do not know how to rebuild the pmm-managed binary, could someone help me with this or point me to a document that may help? Thanks, I pull the code from GitHub and load it to GoLang IDE, but make failed, as I am a newbie to Go, it’s really complicated for me to build the pmm-managed binary without instructions.

---

<div class="post-metadata">

**Author:** ![Luke03011](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/luke03011/32/16409_2.png) [@Luke03011](https://forums.percona.com/u/Luke03011)\
**Post date:** [April 11, 2022, 1:23am UTC](https://forums.percona.com/t/how-to-customize-slack-alert-message/15140/3 "2022-04-11T01:23:40Z")

</div>

I find a workaround. I can modify the /etc/alertmanager.yml and restart the alertmanager. But the modification will be lost if the docker is restarted.