k8s_gossip deployment

Author: antonmi

k8s_gossip/app-a-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: app-a-deployment
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      component: app-a
+  template:
+    metadata:
+      labels:
+        component: app-a
+        cluster: beam
+    spec:
+      containers:
+        - name: app-a
+          image: app-a
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 4001
+            - containerPort: 9000
+          env:
+            - name: LIBCLUSTER_STRATEGY
+              value: "gossip"
+            - name: PORT
+              value: "4001"
+            - name: START_SERVER
+              value: "true"
+            - name: ERLANG_COOKIE
+              value: "secret"
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+            - name: MY_POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+          command: [ "elixir" ]
+          args: [
+            "--name",
+            "app-a@$(POD_IP)",
+            "--cookie","$(ERLANG_COOKIE)",
+            "--erl",
+            "-kernel inet_dist_listen_min 9000 inet_dist_listen_max 9000",
+            "--no-halt",
+            "-S","mix",
+            "run"
+          ]

k8s_gossip/app-b-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: app-b-deployment
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      component: app-b
+  template:
+    metadata:
+      labels:
+        component: app-b
+        cluster: beam
+    spec:
+      containers:
+        - name: app-b
+          image: app-b
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 4002
+            - containerPort: 9000
+          env:
+            - name: LIBCLUSTER_STRATEGY
+              value: "gossip"
+            - name: PORT
+              value: "4002"
+            - name: START_SERVER
+              value: "true"
+            - name: ERLANG_COOKIE
+              value: "secret"
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+            - name: MY_POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+          command: [ "elixir" ]
+          args: [
+            "--name",
+            "app-b@$(POD_IP)",
+            "--cookie","$(ERLANG_COOKIE)",
+            "--erl",
+            "-kernel inet_dist_listen_min 9000 inet_dist_listen_max 9000",
+            "--no-halt",
+            "-S","mix",
+            "run"
+          ]

k8s_gossip/livebook-deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: livebook-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      component: livebook
+  template:
+    metadata:
+      labels:
+        component: livebook
+        cluster: beam
+    spec:
+      containers:
+        - name: livebook
+          image: antonmi/livebook
+          ports:
+            - containerPort: 8080
+            - containerPort: 8081
+          env:
+            - name: LIBCLUSTER_STRATEGY
+              value: "kubernetes.dns"
+            - name: LIVEBOOK_PASSWORD
+              value: "securesecret"
+            - name: LIVEBOOK_COOKIE
+              value: "secret"
+            - name: ERLANG_COOKIE
+              value: "secret"
+            - name: LIVEBOOK_DISTRIBUTION
+              value: "name"
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+            - name: LIVEBOOK_NODE
+              value: "livebook@$(POD_IP)"
+            - name: LIVEBOOK_DEFAULT_RUNTIME
+              value: "attached:$(LIVEBOOK_NODE):$(LIVEBOOK_COOKIE)"

k8s_gossip/livebook-service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: livebook-service
+spec:
+  type: LoadBalancer
+  ports:
+    - name: http
+      port: 8080
+      targetPort: 8080
+#    - name: web-socket
+#      port: 8081
+#      targetPort: 8081
+  selector:
+    component: livebook

k8s_gossip/service-a.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: service-a
+spec:
+  type: LoadBalancer
+  ports:
+    - port: 4001
+      targetPort: 4001
+  selector:
+    component: app-a

k8s_gossip/service-b.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: service-b
+spec:
+  type: LoadBalancer
+  ports:
+    - port: 4002
+      targetPort: 4002
+  selector:
+    component: app-b