From 4b459c1b2671fd2a72cf4011f087bbb6bcf96f9a Mon Sep 17 00:00:00 2001
From: Joseph Hanson <joe@veri.dev>
Date: Thu, 29 Feb 2024 11:53:55 -0600
Subject: [PATCH] Adding alertmanager silencer kubanetics!

---
 .../app/helmrelease.yaml                      | 65 +++++++++++++++++++
 .../app/kustomization.yaml                    |  6 ++
 .../alertmanager-silencer/ks.yaml             | 21 ++++++
 .../apps/observability/kustomization.yaml     |  1 +
 4 files changed, 93 insertions(+)
 create mode 100644 kubernetes/apps/observability/alertmanager-silencer/app/helmrelease.yaml
 create mode 100644 kubernetes/apps/observability/alertmanager-silencer/app/kustomization.yaml
 create mode 100644 kubernetes/apps/observability/alertmanager-silencer/ks.yaml

diff --git a/kubernetes/apps/observability/alertmanager-silencer/app/helmrelease.yaml b/kubernetes/apps/observability/alertmanager-silencer/app/helmrelease.yaml
new file mode 100644
index 0000000..cd9c59c
--- /dev/null
+++ b/kubernetes/apps/observability/alertmanager-silencer/app/helmrelease.yaml
@@ -0,0 +1,65 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/helm.toolkit.fluxcd.io/helmrelease_v2beta2.json
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: alertmanager-silencer
+spec:
+  interval: 30m
+  chart:
+    spec:
+      chart: app-template
+      version: 2.6.0
+      sourceRef:
+        kind: HelmRepository
+        name: bjw-s
+        namespace: flux-system
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    cleanupOnFail: true
+    remediation:
+      retries: 3
+  uninstall:
+    keepHistory: false
+  dependsOn:
+    - name: kube-prometheus-stack
+      namespace: observability
+  values:
+    controllers:
+      main:
+        type: cronjob
+        cronjob:
+          schedule: "@daily"
+        containers:
+          main:
+            image:
+              repository: ghcr.io/onedr0p/kubanetics
+              tag: 2024.2.8@sha256:bcdcb5acd7a8164dda020067aa3177698b914b554364f46ac3d4cef0a8e13064
+            env:
+              SCRIPT_NAME: alertmanager-silencer.sh
+              ALERTMANAGER_URL: http://alertmanager-operated.observability.svc.cluster.local:9093
+              MATCHERS_0: alertname=NodeCPUHighUsage job=node-exporter
+            securityContext:
+              allowPrivilegeEscalation: false
+              readOnlyRootFilesystem: true
+              capabilities: { drop: ["ALL"] }
+            probes:
+              liveness: &noProbes
+                enabled: false
+              readiness: *noProbes
+              startup: *noProbes
+            resources:
+              requests:
+                cpu: 25m
+              limits:
+                memory: 128Mi
+        pod:
+          securityContext:
+            runAsUser: 568
+            runAsGroup: 568
+            runAsNonRoot: true
+    service:
+      main:
+        enabled: false
\ No newline at end of file
diff --git a/kubernetes/apps/observability/alertmanager-silencer/app/kustomization.yaml b/kubernetes/apps/observability/alertmanager-silencer/app/kustomization.yaml
new file mode 100644
index 0000000..2d7deac
--- /dev/null
+++ b/kubernetes/apps/observability/alertmanager-silencer/app/kustomization.yaml
@@ -0,0 +1,6 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./helmrelease.yaml
\ No newline at end of file
diff --git a/kubernetes/apps/observability/alertmanager-silencer/ks.yaml b/kubernetes/apps/observability/alertmanager-silencer/ks.yaml
new file mode 100644
index 0000000..b3981f8
--- /dev/null
+++ b/kubernetes/apps/observability/alertmanager-silencer/ks.yaml
@@ -0,0 +1,21 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/kustomize.toolkit.fluxcd.io/kustomization_v1.json
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: &app alertmanager-silencer
+  namespace: flux-system
+spec:
+  targetNamespace: observability
+  commonMetadata:
+    labels:
+      app.kubernetes.io/name: *app
+  path: ./kubernetes/apps/observability/alertmanager-silencer/app
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: homelab
+  wait: false
+  interval: 30m
+  retryInterval: 1m
+  timeout: 5m
\ No newline at end of file
diff --git a/kubernetes/apps/observability/kustomization.yaml b/kubernetes/apps/observability/kustomization.yaml
index 972a8b0..8b221b3 100644
--- a/kubernetes/apps/observability/kustomization.yaml
+++ b/kubernetes/apps/observability/kustomization.yaml
@@ -6,6 +6,7 @@ resources:
   # Pre Flux-Kustomizations
   - ./namespace.yaml
   # Flux-Kustomizations
+  - ./alertmanager-silencer/ks.yaml
   # - ./gatus/ks.yaml
   # - ./grafana/ks.yaml
   - ./kube-prometheus-stack/ks.yaml