From 3586309c4e8e6342d128730510f6ec78f38196db Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lauri=20V=C3=B5sandi?= <lauri@k-space.ee>
Date: Wed, 21 Dec 2022 14:13:57 +0200
Subject: [PATCH] prometheus-operator: Post only critical alerts to Slack

---
 prometheus-operator/application.yml | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/prometheus-operator/application.yml b/prometheus-operator/application.yml
index e97ce0f..9a7462c 100644
--- a/prometheus-operator/application.yml
+++ b/prometheus-operator/application.yml
@@ -7,7 +7,14 @@ metadata:
     app.kubernetes.io/name: alertmanager
 spec:
   route:
-    receiver: 'slack-notifications'
+    routes:
+      - continue: false
+        receiver: slack-notifications
+        matchers:
+          - matchType: "="
+            name: severity
+            value: critical
+    receiver: 'null'
   receivers:
   - name: 'slack-notifications'
     slackConfigs:
@@ -33,9 +40,12 @@ kind: Alertmanager
 metadata:
   name: alertmanager
 spec:
-  alertmanagerConfigSelector:
-    matchLabels:
-      app.kubernetes.io/name: alertmanager
+  alertmanagerConfigMatcherStrategy:
+    type: None
+  alertmanagerConfigNamespaceSelector: {}
+  alertmanagerConfigSelector: {}
+  alertmanagerConfiguration:
+    name: alertmanager
   secrets:
     - slack-secrets
   nodeSelector: