chapter8: Update deployment configurations for timeserver and add network-utils deployment

Author: gwarrior01

.gitignore

@@ -1 +1,4 @@
 scratch
+.idea
+/out
+*.iml

Chapter07/7.1_InternalServices/deploy.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: timeserver
 spec:
-  replicas: 4
+  replicas: 2
   selector:
     matchLabels:
       pod: timeserver-pod
@@ -12,6 +12,8 @@ spec:
       labels:
         pod: timeserver-pod
     spec:
+      nodeSelector:
+        minikube.k8s.io/name: minikube-m02
       containers:
       - name: timeserver-container
         image: timeserver-java:5

Chapter08/8.1.1_NodeSelection/deploy_nodeaffinity.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: timeserver
 spec:
-  replicas: 1
+  replicas: 3
   selector:
     matchLabels:
       pod: timeserver-pod
@@ -23,4 +23,17 @@ spec:
                 - arm64
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
+        image: timeserver-java:6
+        resources:
+          requests:
+            cpu: 200m
+            memory: 250Mi
+          limits:
+            cpu: 300m
+            memory: 400Mi
+        env:
+          - name: KUBERNETES_POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+

Chapter08/8.1.1_NodeSelection/deploy_nodeselector.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: timeserver
 spec:
-  replicas: 1
+  replicas: 3
   selector:
     matchLabels:
       pod: timeserver-pod
@@ -12,8 +12,20 @@ spec:
       labels:
         pod: timeserver-pod
     spec:
-      nodeSelector:
-        kubernetes.io/arch: arm64
+#      nodeSelector:
+#        two.pages/type: lucky
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
+        image: timeserver-java:5
+        resources:
+          requests:
+            cpu: 200m
+            memory: 250Mi
+          limits:
+            cpu: 300m
+            memory: 400Mi
+        env:
+          - name: KUBERNETES_POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name

Chapter08/8.1.2_NodeAffinity/deploy_nodeaffinity_multi.yaml

@@ -24,7 +24,4 @@ spec:
                 - amd64
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
-        resources:
-          requests:
-            cpu: 500m
+        image: timeserver-java:5

Chapter08/8.1.2_NodeAffinity/deploy_nodeaffinity_preferred.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: timeserver
 spec:
-  replicas: 6
+  replicas: 3
   selector:
     matchLabels:
       pod: timeserver-pod
@@ -24,7 +24,4 @@ spec:
                 - arm64
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
-        resources:
-          requests:
-            cpu: 500m
+        image: timeserver-java:5

Chapter08/8.1.3_Taints/deploy_tolerate_spot.yaml

@@ -17,4 +17,4 @@ spec:
         value: "true"
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
+        image: timeserver-java:5

Chapter08/8.2.1_TopologySpread/deploy_topology.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: timeserver
 spec:
-  replicas: 3
+  replicas: 2
   selector:
     matchLabels:
       pod: timeserver-pod
@@ -12,17 +12,20 @@ spec:
       labels:
         pod: timeserver-pod
     spec:
-      topologySpreadConstraints:
-      - maxSkew: 1
-        topologyKey: kubernetes.io/hostname
-        whenUnsatisfiable: ScheduleAnyway
-        labelSelector:
-          matchLabels:
-            pod: timeserver-pod
+      nodeSelector:
+        kubernetes.io/hostname: minikube-m02
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
+        image: timeserver-java:5
         resources:
           requests:
             cpu: 200m
             memory: 250Mi
+          limits:
+            cpu: 300m
+            memory: 400Mi
+        env:
+          - name: KUBERNETES_POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name

Chapter08/8.2.1_TopologySpread/network-utils.yaml

@@ -0,0 +1,33 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: network-utils
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: network-utils
+  template:
+    metadata:
+      labels:
+        app: network-utils
+    spec:
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: pod
+                    operator: In
+                    values:
+                      - timeserver-pod
+              topologyKey: kubernetes.io/hostname
+      containers:
+        - name: network-utils
+          image: amouat/network-utils
+          command: ["/bin/bash"]
+          tty: true
+          stdin: true
+          env:
+            - name: TIMESERVER_ENDPOINT
+              value: http://timeserver:8080

Chapter08/8.2.2_Colocation/frontend.yaml

@@ -14,7 +14,7 @@ spec:
     spec:
       containers:
       - name: timeserver-container
-        image: docker.io/wdenniss/timeserver:5
+        image: timeserver-java:5
       affinity:
         podAffinity:
           requiredDuringSchedulingIgnoredDuringExecution: