feat(alertmanager): 🎉 Enable managed configuration for alerts

Updates the Alertmanager configuration to use managed settings, enabling streamlined alert handling. Removes outdated configurations and introduces a new email receiver for Grafana alerts.

template/stacks/observability/victoria-k8s-stack/values.yaml

@@ -536,108 +536,29 @@ alertmanager:
   # If you're migrating existing config, please make sure that `.Values.alertmanager.config`:
   # - with `useManagedConfig: false` has structure described [here](https://prometheus.io/docs/alerting/latest/configuration/).
   # - with `useManagedConfig: true` has structure described [here](https://docs.victoriametrics.com/operator/api/#vmalertmanagerconfig).
-  useManagedConfig: false
+  useManagedConfig: true
   # -- (object) Alertmanager configuration
   config:
     route:
-      receiver: "blackhole"
-    #   group_by: ["alertgroup", "job"]
-    #   group_wait: 30s
-    #   group_interval: 5m
-    #   repeat_interval: 12h
-    #   routes:
-    #
-    #     # Duplicate code_owner routes to teams
-    #     # These will send alerts to team channels but continue
-    #     # processing through the rest of the tree to handled by on-call
-    #     - matchers:
-    #         - code_owner_channel!=""
-    #         - severity=~"info|warning|critical"
-    #       group_by: ["code_owner_channel", "alertgroup", "job"]
-    #       receiver: slack-code-owners
-    #
-    #     # Standard on-call routes
-    #     - matchers:
-    #         - severity=~"info|warning|critical"
-    #       receiver: slack-monitoring
-    #       continue: true
-    #
-    # inhibit_rules:
-    #   - target_matchers:
-    #       - severity=~"warning|info"
-    #     source_matchers:
-    #       - severity=critical
-    #     equal:
-    #       - cluster
-    #       - namespace
-    #       - alertname
-    #   - target_matchers:
-    #       - severity=info
-    #     source_matchers:
-    #       - severity=warning
-    #     equal:
-    #       - cluster
-    #       - namespace
-    #       - alertname
-    #   - target_matchers:
-    #       - severity=info
-    #     source_matchers:
-    #       - alertname=InfoInhibitor
-    #     equal:
-    #       - cluster
-    #       - namespace
-
+      receiver: "outlook"
+      routes: 
+        - matchers:
+            - alertname=~".*"
+          receiver: outlook
     receivers:
-      - name: blackhole
-    # - name: "slack-monitoring"
-    #   slack_configs:
-    #     - channel: "#channel"
-    #       send_resolved: true
-    #       title: '{{ template "slack.monzo.title" . }}'
-    #       icon_emoji: '{{ template "slack.monzo.icon_emoji" . }}'
-    #       color: '{{ template "slack.monzo.color" . }}'
-    #       text: '{{ template "slack.monzo.text" . }}'
-    #       actions:
-    #         - type: button
-    #           text: "Runbook :green_book:"
-    #           url: "{{ (index .Alerts 0).Annotations.runbook_url }}"
-    #         - type: button
-    #           text: "Query :mag:"
-    #           url: "{{ (index .Alerts 0).GeneratorURL }}"
-    #         - type: button
-    #           text: "Dashboard :grafana:"
-    #           url: "{{ (index .Alerts 0).Annotations.dashboard }}"
-    #         - type: button
-    #           text: "Silence :no_bell:"
-    #           url: '{{ template "__alert_silence_link" . }}'
-    #         - type: button
-    #           text: '{{ template "slack.monzo.link_button_text" . }}'
-    #           url: "{{ .CommonAnnotations.link_url }}"
-    # - name: slack-code-owners
-    #   slack_configs:
-    #     - channel: "#{{ .CommonLabels.code_owner_channel }}"
-    #       send_resolved: true
-    #       title: '{{ template "slack.monzo.title" . }}'
-    #       icon_emoji: '{{ template "slack.monzo.icon_emoji" . }}'
-    #       color: '{{ template "slack.monzo.color" . }}'
-    #       text: '{{ template "slack.monzo.text" . }}'
-    #       actions:
-    #         - type: button
-    #           text: "Runbook :green_book:"
-    #           url: "{{ (index .Alerts 0).Annotations.runbook }}"
-    #         - type: button
-    #           text: "Query :mag:"
-    #           url: "{{ (index .Alerts 0).GeneratorURL }}"
-    #         - type: button
-    #           text: "Dashboard :grafana:"
-    #           url: "{{ (index .Alerts 0).Annotations.dashboard }}"
-    #         - type: button
-    #           text: "Silence :no_bell:"
-    #           url: '{{ template "__alert_silence_link" . }}'
-    #         - type: button
-    #           text: '{{ template "slack.monzo.link_button_text" . }}'
-    #           url: "{{ .CommonAnnotations.link_url }}"
-    #
+      - name: outlook
+        email_configs:
+          - smarthost: 'mail.mms-support.de:465'
+            auth_username: 'ipcei-cis-devfw@mms-support.de'
+            auth_password: 
+              name: email-user-credentials
+              key: connection-string
+            from: '"IPCEI CIS DevFW" <ipcei-cis-devfw@mms-support.de>'
+            to: 'f9f9953a.mg.telekom.de@de.teams.ms'
+            headers:
+              subject: 'Grafana Mail Alerts'
+            require_tls: false
+
   # -- Better alert templates for [slack source](https://gist.github.com/milesbxf/e2744fc90e9c41b47aa47925f8ff6512)
   monzoTemplate:
     enabled: true