From 86b465422f935b3587e64aaa68d2cec7149b27a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Josef=20=C5=A0im=C3=A1nek?= <josef.simanek@gmail.com>
Date: Sat, 6 Sep 2025 12:04:32 +0200
Subject: [PATCH] Add initial K8s web HPA.

---
 config/deploy/production/web-hpa.yaml.erb |  1 +
 config/deploy/staging/web-hpa.yaml.erb    |  1 +
 config/deploy/web-hpa.yaml.erb            | 38 +++++++++++++++++++++++
 config/deploy/web.yaml.erb                |  1 +
 4 files changed, 41 insertions(+)
 create mode 120000 config/deploy/production/web-hpa.yaml.erb
 create mode 120000 config/deploy/staging/web-hpa.yaml.erb
 create mode 100644 config/deploy/web-hpa.yaml.erb

diff --git a/config/deploy/production/web-hpa.yaml.erb b/config/deploy/production/web-hpa.yaml.erb
new file mode 120000
index 00000000000..f5f3c200bcf
--- /dev/null
+++ b/config/deploy/production/web-hpa.yaml.erb
@@ -0,0 +1 @@
+../web-hpa.yaml.erb
\ No newline at end of file
diff --git a/config/deploy/staging/web-hpa.yaml.erb b/config/deploy/staging/web-hpa.yaml.erb
new file mode 120000
index 00000000000..f5f3c200bcf
--- /dev/null
+++ b/config/deploy/staging/web-hpa.yaml.erb
@@ -0,0 +1 @@
+../web-hpa.yaml.erb
\ No newline at end of file
diff --git a/config/deploy/web-hpa.yaml.erb b/config/deploy/web-hpa.yaml.erb
new file mode 100644
index 00000000000..d9def7fc6f8
--- /dev/null
+++ b/config/deploy/web-hpa.yaml.erb
@@ -0,0 +1,38 @@
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: web-hpa
+  labels:
+    app: web
+    environment: <%= environment %>
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: web
+  minReplicas: <%= environment == 'production' ? 3 : 2 %>
+  maxReplicas: <%= environment == 'production' ? 10 : 5 %>
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 75
+  behavior:
+    scaleDown:
+      stabilizationWindowSeconds: 300
+      policies:
+      - type: Percent
+        value: 50
+        periodSeconds: 60
+    scaleUp:
+      stabilizationWindowSeconds: 60
+      policies:
+      - type: Percent
+        value: 100
+        periodSeconds: 60
+      - type: Pods
+        value: 2
+        periodSeconds: 60
+      selectPolicy: Max
diff --git a/config/deploy/web.yaml.erb b/config/deploy/web.yaml.erb
index 3c81247120f..3c839a790d2 100644
--- a/config/deploy/web.yaml.erb
+++ b/config/deploy/web.yaml.erb
@@ -5,6 +5,7 @@ metadata:
   annotations:
     shipit.shopify.io/restart: 'true'
 spec:
+  replicas: <%= environment == 'production' ? 3 : 2 %>
   strategy:
     type: RollingUpdate
     rollingUpdate: