Add an example for running rethinkdb cluster on k8s

examples/rethinkdb/gen-pod.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+: ${VERSION:=1.16.0}
+
+readonly NAME=${1-}
+if [[ -z "${NAME}" ]]; then
+  echo -e "\033[1;31mName must be specified\033[0m"
+  exit 1
+fi
+
+ADMIN=""
+if [[ ${NAME} == "admin" ]]; then
+  ADMIN="role: admin"
+fi
+
+NODE=""
+if [[ ! -z "${2-}" ]]; then
+  NODE="nodeSelector: { name: ${2} }"
+fi
+
+cat << EOF
+apiVersion: v1beta1
+namespace: rethinkdb
+kind: Pod
+id: rethinkdb-${NAME}-${VERSION}
+${NODE}
+labels:
+  db: rethinkdb
+  ${ADMIN}
+desiredState:
+  manifest:
+    version: v1beta1
+    id: rethinkdb
+    containers:
+      - name: rethinkdb
+        image: antmanler/rethinkdb:${VERSION}
+        ports:
+          - name: admin-port
+            containerPort: 8080
+          - name: driver-port
+            containerPort: 28015
+          - name: cluster-port
+            containerPort: 29015
+        volumeMounts:
+          - name: rethinkdb-storage
+            mountPath: /data/rethinkdb_data
+    volumes:
+      - name: rethinkdb-storage
+        source:
+          hostDir:
+            path: /data/db/rethinkdb
+    restartPolicy:
+      always: {}
+EOF