init commit

02-etcd.yaml

@@ -0,0 +1,122 @@
+##############################################################################
+# etcd cluster for M3DB placement & topology
+# M3DB requires etcd for cluster coordination
+##############################################################################
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: etcd
+  namespace: m3db
+  labels:
+    app.kubernetes.io/name: etcd
+    app.kubernetes.io/part-of: m3db
+spec:
+  clusterIP: None
+  ports:
+    - name: client
+      port: 2379
+      targetPort: 2379
+    - name: peer
+      port: 2380
+      targetPort: 2380
+  selector:
+    app.kubernetes.io/name: etcd
+
+---
+
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: etcd
+  namespace: m3db
+  labels:
+    app.kubernetes.io/name: etcd
+    app.kubernetes.io/part-of: m3db
+spec:
+  serviceName: etcd
+  replicas: 3
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: etcd
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: etcd
+        app.kubernetes.io/part-of: m3db
+    spec:
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchExpressions:
+                  - key: app.kubernetes.io/name
+                    operator: In
+                    values:
+                      - etcd
+              topologyKey: kubernetes.io/hostname
+      containers:
+        - name: etcd
+          image: quay.io/coreos/etcd:v3.5.15
+          ports:
+            - containerPort: 2379
+              name: client
+            - containerPort: 2380
+              name: peer
+          env:
+            - name: POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+            - name: CLUSTER_SIZE
+              value: "3"
+          command:
+            - /bin/sh
+            - -ec
+            - |
+              PEERS=""
+              for i in $(seq 0 $((${CLUSTER_SIZE} - 1))); do
+                PEERS="${PEERS}${PEERS:+,}etcd-${i}=http://etcd-${i}.etcd.m3db.svc.cluster.local:2380"
+              done
+
+              exec etcd \
+                --name=${POD_NAME} \
+                --listen-peer-urls=http://0.0.0.0:2380 \
+                --listen-client-urls=http://0.0.0.0:2379 \
+                --advertise-client-urls=http://${POD_NAME}.etcd.m3db.svc.cluster.local:2379 \
+                --initial-advertise-peer-urls=http://${POD_NAME}.etcd.m3db.svc.cluster.local:2380 \
+                --initial-cluster=${PEERS} \
+                --initial-cluster-state=new \
+                --data-dir=/var/lib/etcd/data \
+                --auto-compaction-retention=1
+          volumeMounts:
+            - name: etcd-data
+              mountPath: /var/lib/etcd
+          resources:
+            requests:
+              cpu: 200m
+              memory: 256Mi
+            limits:
+              cpu: 500m
+              memory: 512Mi
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 2379
+            initialDelaySeconds: 15
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /health
+              port: 2379
+            initialDelaySeconds: 5
+            periodSeconds: 5
+  volumeClaimTemplates:
+    - metadata:
+        name: etcd-data
+      spec:
+        storageClassName: vultr-block-storage-m3db
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 10Gi