#17 3rd party services in k8s

k8s/ingress.yml

@@ -7,17 +7,28 @@ metadata:
 spec:
   defaultBackend:
     service:
-      name: ms-admin
+      name: ms-keycloak-service
       port:
-        number: 8081
+        number: 8082
+  ingressClassName: ms-ingress
   rules:
-    - host: microservices.info
+    - host: localhost
       http:
         paths:
-          - path: /applications
+          - path: /
             pathType: ImplementationSpecific
             backend:
               service:
-                name: ms-admin
+                name: ms-keycloak-service
                 port:
-                  number: 8081
+                  number: 8082
+#    - host: microservices.info
+#      http:
+#        paths:
+#          - path: /applications
+#            pathType: ImplementationSpecific
+#            backend:
+#              service:
+#                name: ms-admin
+#                port:
+#                  number: 8081

k8s/kafka/ms-kafka.yml

@@ -0,0 +1,89 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ms-kafka
+  labels:
+    app: ms-kafka
+spec:
+    replicas: 1
+    selector:
+        matchLabels:
+          app: ms-kafka
+    template:
+        metadata:
+          labels:
+            app: ms-kafka
+        spec:
+          containers:
+            - name: ms-kafka
+              image: wurstmeister/kafka
+              ports:
+                  - containerPort: 9092
+              env:
+                  - name: KAFKA_ADVERTISED_HOST_NAME
+                    value: 127.0.0.1
+                  - name: KAFKA_ZOOKEEPER_CONNECT
+                    value: ms-zookeeper-service:2181
+                  - name: KAFKA_AUTO_CREATE_TOPICS_ENABLE
+                    value: 'true'
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ms-kafka-service
+  labels:
+    app: ms-kafka
+spec:
+    selector:
+        app: ms-kafka
+    ports:
+        - protocol: TCP
+          port: 9092
+          targetPort: 9092
+    type: LoadBalancer
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ms-zookeeper
+  labels:
+    app: ms-zookeeper
+spec:
+    replicas: 1
+    selector:
+        matchLabels:
+          app: ms-zookeeper
+    template:
+        metadata:
+          labels:
+            app: ms-zookeeper
+        spec:
+          containers:
+            - name: ms-zookeeper
+              image: wurstmeister/zookeeper
+              ports:
+                  - containerPort: 2181
+              env:
+                  - name: ZOOKEEPER_CLIENT_PORT
+                    value: "2181"
+                  - name: ZOOKEEPER_TICK_TIME
+                    value: "2000"
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ms-zookeeper-service
+  labels:
+    app: ms-zookeeper
+spec:
+    selector:
+        app: ms-zookeeper
+    ports:
+        - protocol: TCP
+          port: 2181
+          targetPort: 2181
+    type: LoadBalancer
+

k8s/keycloak/ms-keycloak.yml

@@ -0,0 +1,79 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ms-keycloak
+  labels:
+    app: ms-keycloak
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: ms-keycloak
+  template:
+    metadata:
+      name: ms-keycloak-pod
+      labels:
+        app: ms-keycloak
+    spec:
+      containers:
+        - name: ms-keycloak-container
+          image: quay.io/keycloak/keycloak:22.0.3
+          command: [ "/opt/keycloak/bin/kc.sh", "start-dev", "--db postgres" ]
+          env:
+            - name: KC_DB_URL
+              value: jdbc:postgresql://ms-postgres-service:5432/keycloak
+            - name: KC_DB_PASSWORD
+              value: postgres
+            - name: KC_DB_USERNAME
+              value: postgres
+            - name: KEYCLOAK_ADMIN
+              value: admin
+            - name: KEYCLOAK_ADMIN_PASSWORD
+              value: admin
+            - name: HOSTNAME
+              value: localhost
+          ports:
+            - containerPort: 8080
+            - containerPort: 8787
+          volumeMounts:
+            - name: ms-keycloak-storage
+              mountPath: /var/lib/keycloak/data
+      volumes:
+        - name: ms-keycloak-storage
+          persistentVolumeClaim:
+            claimName: ms-keycloak-pvc
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ms-keycloak-service
+  labels:
+    app: ms-keycloak
+spec:
+  selector:
+    app: ms-keycloak
+  type: LoadBalancer
+  ports:
+    - name: http
+      protocol: TCP
+      port: 8082
+      targetPort: 8080
+    - name: debug
+      protocol: TCP
+      port: 8787
+      targetPort: 8787
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: ms-keycloak-pvc
+  labels:
+    app: ms-keycloak
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 200Mi

k8s/postgres/init_db_schema.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -e
+set -u
+
+function create_user_and_database() {
+	local database=$1
+	echo "  Creating user and database '$database'"
+	psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+	    CREATE USER $database;
+	    CREATE DATABASE $database;
+	    GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
+EOSQL
+}
+
+if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
+	echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
+	for db in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
+		create_user_and_database $db
+	done
+	echo "Multiple databases created"
+fi

k8s/postgres/ms-postgres.yml

@@ -0,0 +1,119 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ms-postgres
+  labels:
+    app: ms-postgres
+spec:
+    replicas: 1
+    selector:
+        matchLabels:
+          app: ms-postgres
+    template:
+        metadata:
+          name: ms-postgres-pod
+          labels:
+            app: ms-postgres
+        spec:
+          containers:
+          - name: ms-postgres-container
+            image: postgres:15.1-alpine
+            ports:
+                - containerPort: 5432
+            env:
+                - name: POSTGRES_USER
+                  value: postgres
+                - name: POSTGRES_PASSWORD
+                  value: postgres
+                - name: POSTGRES_MULTIPLE_DATABASES
+                  value: stock,cms,keycloak
+            volumeMounts:
+              - name: ms-postgres-storage
+                mountPath: /var/lib/postgresql/data
+              - name: ms-postgres-init
+                mountPath: /docker-entrypoint-initdb.d/init.sh
+                subPath: init_db_schema.sh
+          volumes:
+            - name: ms-postgres-init
+              configMap:
+                name: ms-postgres-init-db-script
+            - name: ms-postgres-storage
+              persistentVolumeClaim:
+                claimName: ms-postgres-pvc
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ms-postgres-service
+  labels:
+    app: ms-postgres
+spec:
+    selector:
+        app: ms-postgres
+    ports:
+        - protocol: TCP
+          port: 5432
+          targetPort: 5432
+    type: NodePort
+
+---
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: ms-postgres-storage
+  labels:
+    app: ms-postgres
+spec:
+    capacity:
+        storage: 500Mi
+    accessModes:
+        - ReadWriteOnce
+    hostPath:
+      path: /var/lib/docker/volumes/microservice-search/postgres
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: ms-postgres-pvc
+  labels:
+    app: ms-postgres
+spec:
+    accessModes:
+        - ReadWriteOnce
+    resources:
+        requests:
+          storage: 500Mi
+
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: ms-postgres-init-db-script
+data:
+  init_db_schema.sh: |
+    #!/bin/bash
+    set -e
+    set -u
+    function create_user_and_database() {
+      local database=$1
+      echo "  Creating user and database '$database'"
+      psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+          CREATE USER $database;
+          CREATE DATABASE $database;
+          GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
+    EOSQL
+    }
+    if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
+      echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
+      for db in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
+        create_user_and_database $db
+      done
+      echo "Multiple databases created"
+    fi
+
+
+
+
+