basics

kubernetes/kustomize/application/configmap.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: example-config
+data:
+  config.json: |
+    {
+      "environment" : "dev"
+    }

kubernetes/kustomize/application/deployment.yaml

@@ -0,0 +1,36 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: example-deploy
+  namespace: example
+  labels:
+    app: example-app
+  annotations:
+spec:
+  selector:
+    matchLabels:
+      app: example-app
+  replicas: 2
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+  template:
+    metadata:
+      labels:
+        app: example-app
+    spec:
+      containers:
+      - name: example-app
+        image: aimvector/python:1.0.0
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 5000
+        volumeMounts:
+        - name: config-volume
+          mountPath: /configs/
+      volumes:
+      - name: config-volume
+        configMap:
+          name: example-config

kubernetes/kustomize/application/kustomization.yaml

@@ -0,0 +1,5 @@
+resources:
+  - namespace.yaml
+  - deployment.yaml
+  - service.yaml
+  - configmap.yaml

kubernetes/kustomize/application/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: example

kubernetes/kustomize/application/service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: example-service
+  namespace: example
+  labels:
+    app: example-app
+spec:
+  type: LoadBalancer
+  selector:
+    app: example-app
+  ports:
+    - protocol: TCP
+      name: http
+      port: 80
+      targetPort: 5000

kubernetes/kustomize/environments/development/kustomization.yaml

@@ -0,0 +1,7 @@
+bases:
+  - ../../application
+patches:
+  - replica_count.yaml
+images:
+- name: aimvector/python
+  newTag: 1.0.1

kubernetes/kustomize/environments/development/replica_count.yaml

@@ -0,0 +1,6 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: example-deploy
+spec:
+  replicas: 4

kubernetes/kustomize/environments/production/configs/config.json

@@ -0,0 +1,4 @@
+{
+    "environment" : "prod",
+    "new" : "123"
+  }

kubernetes/kustomize/environments/production/env.yaml

@@ -0,0 +1,12 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: example-deploy
+spec:
+  template:
+    spec:
+      containers:
+      - name: example-app
+        env:
+        - name: ENVIRONMENT
+          value: Production

kubernetes/kustomize/environments/production/kustomization.yaml

@@ -0,0 +1,13 @@
+bases:
+  - ../../application
+patches:
+  - replica_count.yaml
+  - resource_limits.yaml
+configMapGenerator:
+- name: example-config
+  namespace: example
+  behavior: replace
+  files:
+    - configs/config.json
+patchesStrategicMerge:
+  - env.yaml

kubernetes/kustomize/environments/production/replica_count.yaml

@@ -0,0 +1,6 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: example-deploy
+spec:
+  replicas: 6

kubernetes/kustomize/environments/production/resource_limits.yaml

@@ -0,0 +1,16 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: example-deploy
+spec:
+  template:
+    spec:
+      containers:
+      - name: example-app
+        resources:
+          requests:
+            memory: "64Mi"
+            cpu: "50m"
+          limits:
+            memory: "256Mi"
+            cpu: "500m"

kubernetes/kustomize/kustomization.yaml

@@ -0,0 +1,5 @@
+resources:
+  - application/namespace.yaml
+  - application/deployment.yaml
+  - application/service.yaml
+  - application/configmap.yaml

kubernetes/kustomize/readme.md

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+
+# The Basics
+```
+
+kubectl apply -f kubernetes/kustomize/application/namespace.yaml
+kubectl apply -f kubernetes/kustomize/application/configmap.yaml
+kubectl apply -f kubernetes/kustomize/application/deployment.yaml
+kubectl apply -f kubernetes/kustomize/application/service.yaml
+
+# OR 
+
+kubectl apply -f kubernetes/kustomize/application/
+
+kubectl delete ns example
+
+```
+
+# Kustomize
+
+## Build
+```
+kubectl kustomize .\kubernetes\kustomize\ | kubectl apply -f -
+# OR
+kubectl apply -k .\kubernetes\kustomize\
+
+kubectl delete ns example
+```
+
+## Overlays
+
+```
+kubectl kustomize .\kubernetes\kustomize\environments\production | kubectl apply -f -
+# OR
+kubectl apply -k .\kubernetes\kustomize\environments\production
+
+kubectl delete ns example
+```
+
+
+