From 4e7aac7d3341a46450c506459440aae1128fe0e4 Mon Sep 17 00:00:00 2001
From: Edward Viaene <ward.viaene@gmail.com>
Date: Thu, 26 Jul 2018 10:02:10 +0000
Subject: [PATCH] pod affinity and anti-affinity

---
 affinity/pod-affinity.yaml      |  45 ++++++++++++++
 affinity/pod-anti-affinity.yaml | 103 ++++++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+)
 create mode 100644 affinity/pod-affinity.yaml
 create mode 100644 affinity/pod-anti-affinity.yaml

diff --git a/affinity/pod-affinity.yaml b/affinity/pod-affinity.yaml
new file mode 100644
index 0000000..bc9c34e
--- /dev/null
+++ b/affinity/pod-affinity.yaml
@@ -0,0 +1,45 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-1
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-1
+    spec:
+      containers:
+      - name: k8s-demo
+        image: wardviaene/k8s-demo
+        ports:
+        - name: nodejs-port
+          containerPort: 3000
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-2
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-2
+    spec:
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: "app"
+                    operator: In
+                    values:
+                    - pod-affinity-1
+              topologyKey: "kubernetes.io/hostname"
+      containers:
+      - name: redis
+        image: redis
+        ports:
+        - name: redis-port
+          containerPort: 6379
diff --git a/affinity/pod-anti-affinity.yaml b/affinity/pod-anti-affinity.yaml
new file mode 100644
index 0000000..3e76aaa
--- /dev/null
+++ b/affinity/pod-anti-affinity.yaml
@@ -0,0 +1,103 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-1
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-1
+    spec:
+      containers:
+      - name: k8s-demo
+        image: wardviaene/k8s-demo
+        ports:
+        - name: nodejs-port
+          containerPort: 3000
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-2
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-2
+    spec:
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: "app"
+                    operator: In
+                    values:
+                    - pod-affinity-1
+              topologyKey: "kubernetes.io/hostname"
+      containers:
+      - name: redis
+        image: redis
+        ports:
+        - name: redis-port
+          containerPort: 6379
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-3
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-3
+    spec:
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: "app"
+                    operator: In
+                    values:
+                    - pod-affinity-1
+              topologyKey: "kubernetes.io/hostname"
+      containers:
+      - name: k8s-demo
+        image: wardviaene/k8s-demo
+        ports:
+        - name: nodejs-port
+          containerPort: 3000
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: pod-affinity-4
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: pod-affinity-4
+    spec:
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: "app"
+                    operator: In
+                    values:
+                    - pod-affinity-1
+                    - pod-affinity-3
+              topologyKey: "kubernetes.io/hostname"
+      containers:
+      - name: k8s-demo
+        image: wardviaene/k8s-demo
+        ports:
+        - name: nodejs-port
+          containerPort: 3000
+---