Chapter 13 updates

Signed-off-by: Lachlan Evenson <lachlan.evenson@gmail.com>

13-1-dns-service.yaml

@@ -1,7 +0,0 @@
-kind: Service
-apiVersion: v1
-metadata:
-  name: external-database
-spec:
-  type: ExternalName
-  externalName: database.company.com

13-1-my-config.txt

@@ -0,0 +1,3 @@
+# This is a sample config file that I might use to configure an application
+parameter1 = value1
+parameter2 = value2

13-10-mongo-simple.yaml

@@ -1,25 +0,0 @@
-apiVersion: apps/v1
-kind: StatefulSet
-metadata:
-  name: mongo
-spec:
-  serviceName: "mongo"
-  replicas: 3
-  selector:
-    matchLabels:
-      app: mongo
-  template:
-    metadata:
-      labels:
-        app: mongo
-    spec:
-      containers:
-      - name: mongodb
-        image: mongo:3.4.24
-        command:
-        - mongod
-        - --replSet
-        - rs0
-        ports:
-        - containerPort: 27017
-          name: peer

13-11-mongo-service.yaml

@@ -1,11 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: mongo
-spec:
-  ports:
-  - port: 27017
-    name: peer
-  clusterIP: None
-  selector:
-    app: mongo

13-12-mongo-configmap.yaml

@@ -1,51 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: mongo-init
-data:
-  init.sh: |
-    #!/bin/bash
-
-    # Need to wait for the readiness health check to pass so that the
-    # mongo names resolve. This is kind of wonky.
-    until ping -c 1 ${HOSTNAME}.mongo; do
-      echo "waiting for DNS (${HOSTNAME}.mongo)..."
-      sleep 2
-    done
-
-    until /usr/bin/mongo --eval 'printjson(db.serverStatus())'; do
-      echo "connecting to local mongo..."
-      sleep 2
-    done
-    echo "connected to local."
-
-    HOST=mongo-0.mongo:27017
-
-    until /usr/bin/mongo --host=${HOST} --eval 'printjson(db.serverStatus())'; do
-      echo "connecting to remote mongo..."
-      sleep 2
-    done
-    echo "connected to remote."
-
-    if [[ "${HOSTNAME}" != 'mongo-0' ]]; then
-      until /usr/bin/mongo --host=${HOST} --eval="printjson(rs.status())" \
-            | grep -v "no replset config has been received"; do
-        echo "waiting for replication set initialization"
-        sleep 2
-      done
-      echo "adding self to mongo-0"
-      /usr/bin/mongo --host=${HOST} \
-         --eval="printjson(rs.add('${HOSTNAME}.mongo'))"
-    fi
-
-    if [[ "${HOSTNAME}" == 'mongo-0' ]]; then
-      echo "initializing replica set"
-      /usr/bin/mongo --eval="printjson(rs.initiate(\
-          {'_id': 'rs0', 'members': [{'_id': 0, \
-           'host': 'mongo-0.mongo:27017'}]}))"
-    fi
-    echo "initialized"
-
-    while true; do
-      sleep 3600
-    done

13-13-mongo.yaml

@@ -1,37 +0,0 @@
-apiVersion: apps/v1
-kind: StatefulSet
-metadata:
-  name: mongo
-spec:
-  serviceName: "mongo"
-  replicas: 3
-  selector:
-    matchLabels:
-      app: mongo
-  template:
-    metadata:
-      labels:
-        app: mongo
-    spec:
-      containers:
-      - name: mongodb
-        image: mongo:3.4.1
-        command:
-        - mongod
-        - --replSet
-        - rs0
-        ports:
-        - containerPort: 27017
-          name: web
-      - name: init-mongo
-        image: mongo:3.4.1
-        command:
-        - bash
-        - /config/init.sh
-        volumeMounts:
-        - name: config
-          mountPath: /config
-      volumes:
-      - name: config
-        configMap:
-          name: "mongo-init"

13-2-external-ip-service.yaml

@@ -1,7 +0,0 @@
-kind: Service
-apiVersion: v1
-metadata:
-  name: external-ip-database
-spec:
-  ports:
-  - port: 3306

13-2-kuard-config.yaml

@@ -0,0 +1,35 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kuard-config
+spec:
+  containers:
+    - name: test-container
+      image: gcr.io/kuar-demo/kuard-amd64:blue
+      imagePullPolicy: Always
+      command:
+        - "/kuard"
+        - "$(EXTRA_PARAM)"
+      env:
+        # An example of an environment variable used inside the container
+        - name: ANOTHER_PARAM
+          valueFrom:
+            configMapKeyRef:
+              name: my-config
+              key: another-param
+        # An example of an environment variable passed to the command to start
+        # the container (above).
+        - name: EXTRA_PARAM
+          valueFrom:
+            configMapKeyRef:
+              name: my-config
+              key: extra-param
+      volumeMounts:
+        # Mounting the ConfigMap as a set of files
+        - name: config-volume
+          mountPath: /config
+  volumes:
+    - name: config-volume
+      configMap:
+        name: my-config
+  restartPolicy: Never

13-3-external-ip-endpoints.yaml

@@ -1,9 +0,0 @@
-kind: Endpoints
-apiVersion: v1
-metadata:
-  name: external-ip-database
-subsets:
-  - addresses:
-    - ip: 192.168.0.1
-    ports:
-    - port: 3306

13-3-kuard-secret.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kuard-tls
+spec:
+  containers:
+    - name: kuard-tls
+      image: gcr.io/kuar-demo/kuard-amd64:blue
+      imagePullPolicy: Always
+      volumeMounts:
+      - name: tls-certs
+        mountPath: "/tls"
+        readOnly: true
+  volumes:
+    - name: tls-certs
+      secret:
+        secretName: kuard-tls

13-4-kuard-secret-ips.yaml

@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kuard-tls
+spec:
+  containers:
+    - name: kuard-tls
+      image: gcr.io/kuar-demo/kuard-amd64:blue
+      imagePullPolicy: Always
+      volumeMounts:
+      - name: tls-certs
+        mountPath: "/tls"
+        readOnly: true
+  imagePullSecrets:
+  - name:  my-image-pull-secret
+  volumes:
+    - name: tls-certs
+      secret:
+        secretName: kuard-tls

13-4-nfs-volume.yaml

@@ -1,14 +0,0 @@
-apiVersion: v1
-kind: PersistentVolume
-metadata:
-  name: database
-  labels:
-    volume: my-volume
-spec:
-  accessModes:
-  - ReadWriteMany
-  capacity:
-    storage: 1Gi
-  nfs:
-    server: 192.168.0.1
-    path: "/exports"

13-5-nfs-volume-claim.yaml

@@ -1,13 +0,0 @@
-kind: PersistentVolumeClaim
-apiVersion: v1
-metadata:
-  name: database
-spec:
-  accessModes:
-  - ReadWriteMany
-  resources:
-    requests:
-      storage: 1Gi
-  selector:
-    matchLabels:
-      volume: my-volume

13-6-mysql-replicaset.yaml

@@ -1,43 +0,0 @@
-apiVersion: apps/v1
-kind: ReplicaSet
-metadata:
-  name: mysql
-  # labels so that we can bind a Service to this Pod
-  labels:
-    app: mysql
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: mysql
-  template:
-    metadata:
-      labels:
-        app: mysql
-    spec:
-      containers:
-      - name: database
-        image: mysql
-        resources:
-          requests:
-            cpu: 1
-            memory: 2Gi
-        env:
-        # Environment variables are not a best practice for security,
-        # but we're using them here for brevity in the example.
-        # See Chapter 11 for better options.
-        - name: MYSQL_ROOT_PASSWORD
-          value: some-password-here
-        livenessProbe:
-          tcpSocket:
-            port: 3306
-        ports:
-        - containerPort: 3306
-        volumeMounts:
-          - name: database
-            # /var/lib/mysql is where MySQL stores its databases
-            mountPath: "/var/lib/mysql"
-      volumes:
-      - name: database
-        persistentVolumeClaim:
-          claimName: database

13-7-mysql-service.yaml

@@ -1,10 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: mysql
-spec:
-  ports:
-  - port: 3306
-    protocol: TCP
-  selector:
-    app: mysql

13-8-storageclass.yaml

@@ -1,9 +0,0 @@
-apiVersion: storage.k8s.io/v1
-kind: StorageClass
-metadata:
-  name: default
-  annotations:
-    storageclass.beta.kubernetes.io/is-default-class: "true"
-  labels:
-    kubernetes.io/cluster-service: "true"
-provisioner: kubernetes.io/azure-disk

13-9-dynamic-volume-claim.yaml

@@ -1,12 +0,0 @@
-kind: PersistentVolumeClaim
-apiVersion: v1
-metadata:
-  name: my-claim
-  annotations:
-    volume.beta.kubernetes.io/storage-class: default
-spec:
-  accessModes:
-  - ReadWriteOnce
-  resources:
-    requests:
-      storage: 10Gi

14-1-parse.yaml

@@ -1,26 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: parse-server
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      run: parse-server
-  template:
-    metadata:
-      labels:
-        run: parse-server
-    spec:
-      containers:
-      - name: parse-server
-        image: ${DOCKER_USER}/parse-server
-        env:
-        - name: PARSE_SERVER_DATABASE_URI
-          value: "mongodb://mongo-0.mongo:27017,\
-            mongo-1.mongo:27017,mongo-2.mongo\
-            :27017/dev?replicaSet=rs0"
-        - name: PARSE_SERVER_APP_ID
-          value: "my-app-id"
-        - name: PARSE_SERVER_MASTER_KEY
-          value: "my-master-key"

14-10-redis.yaml

@@ -1,40 +0,0 @@
-apiVersion: apps/v1
-kind: StatefulSet
-metadata:
-  name: redis
-spec:
-  replicas: 3
-  serviceName: redis
-  selector:
-    matchLabels:
-      app: redis
-  template:
-    metadata:
-      labels:
-        app: redis
-    spec:
-      containers:
-      - command: [sh, -c, source /redis-config/init.sh ]
-        image: redis:3.2.7-alpine
-        name: redis
-        ports:
-        - containerPort: 6379
-          name: redis
-        volumeMounts:
-        - mountPath: /redis-config
-          name: config
-        - mountPath: /redis-data
-          name: data
-      - command: [sh, -c, source /redis-config/sentinel.sh]
-        image: redis:3.2.7-alpine
-        name: sentinel
-        volumeMounts:
-        - mountPath: /redis-config
-          name: config
-      volumes:
-      - configMap:
-          defaultMode: 420
-          name: redis-config
-        name: config
-      - emptyDir:
-        name: data

14-2-parse-service.yaml

@@ -1,12 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: parse-server
-  namespace: default
-spec:
-  ports:
-  - port: 1337
-    protocol: TCP
-    targetPort: 1337
-  selector:
-    run: parse-server

14-3-ghost-config.js

@@ -1,25 +0,0 @@
-var path = require('path'),
-    config;
-
-config = {
-    development: {
-        url: 'http://localhost:2368',
-        database: {
-            client: 'sqlite3',
-            connection: {
-                filename: path.join(process.env.GHOST_CONTENT,
-                                    '/data/ghost-dev.db')
-            },
-            debug: false
-        },
-        server: {
-            host: '0.0.0.0',
-            port: '2368'
-        },
-        paths: {
-            contentPath: path.join(process.env.GHOST_CONTENT, '/')
-        }
-    }
-};
-
-module.exports = config;

14-4-ghost.yaml

@@ -1,30 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: ghost
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      run: ghost
-  template:
-    metadata:
-      labels:
-        run: ghost
-    spec:
-      containers:
-      - image: ghost
-        name: ghost
-        command:
-        - sh
-        - -c
-        - cp /ghost-config/ghost-config.js /var/lib/ghost/config.js
-          && docker-entrypoint.sh node current/index.js
-        volumeMounts:
-        - mountPath: /ghost-config
-          name: config
-      volumes:
-      - name: config
-        configMap:
-          defaultMode: 420
-          name: ghost-config

14-4-master.conf

@@ -1,4 +0,0 @@
-bind 0.0.0.0
-port 6379
-
-dir /redis-data

14-5-slave.conf

@@ -1,6 +0,0 @@
-bind 0.0.0.0
-port 6379
-
-dir .
-
-slaveof redis-0.redis 6379

14-6-sentinel.conf

@@ -1,7 +0,0 @@
-bind 0.0.0.0
-port 26379
-
-sentinel monitor redis redis-0.redis 6379 2
-sentinel parallel-syncs redis 1
-sentinel down-after-milliseconds redis 10000
-sentinel failover-timeout redis 20000

14-7-init.sh

@@ -1,6 +0,0 @@
-#!/bin/bash
-if [[ ${HOSTNAME} == 'redis-0' ]]; then
-  redis-server /redis-config/master.conf
-else
-  redis-server /redis-config/slave.conf
-fi

14-8-sentinel.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-while ! ping -c 1 redis-0.redis; do
-    echo 'Waiting for server'
-    sleep 1
-done
-
-redis-sentinel /redis-config/sentinel.conf
-

14-9-redis-service.yaml

@@ -1,11 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: redis
-spec:
-  ports:
-  - port: 6379
-    name: peer
-  clusterIP: None
-  selector:
-    app: redis