Upgrade to mongo 3.4 and added volume driver choice

templates/MongoDB/3/README.md

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+# MongoDB
+
+
+### Info:
+
+ This template creates MongoDB replica set on top of Rancher. Replica set size starts with 3 MongoDB instances, the replica set has the ability to scale up automatically when adding new instances. 
+ 
+ 
+### Usage:
+
+ Select MongoDB from catalog. 
+ 
+ Enter the name of the replica set.
+ 
+ Click deploy.
+ 
+ MongoDB can now be accessed over the Rancher network. 
+ 

templates/MongoDB/3/docker-compose.yml

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+version: '2'
+services:
+  mongo-cluster:
+    restart: always
+    environment:
+      MONGO_SERVICE_NAME: mongo-cluster
+      CATTLE_SCRIPT_DEBUG: ${debug}
+    entrypoint: /opt/rancher/bin/entrypoint.sh
+    command:
+    - --replSet
+    - "${replset_name}"
+    image: mongo:3.4
+    labels:
+      io.rancher.scheduler.affinity:host_label: ${host_label}
+      io.rancher.container.hostname_override: container_name
+      io.rancher.sidekicks: mongo-base, mongo-datavolume
+    volumes_from:
+      - mongo-datavolume
+      - mongo-base
+    ports:
+      - 27017:27017/tcp
+  mongo-base:
+    restart: always
+    labels:
+      io.rancher.scheduler.affinity:host_label: ${host_label}
+      io.rancher.container.hostname_override: container_name
+      io.rancher.container.start_once: true
+    image: rancher/mongodb-conf:v0.1.1
+    stdin_open: true
+    entrypoint: /bin/true
+  mongo-datavolume:
+    labels:
+      io.rancher.scheduler.affinity:host_label: ${host_label}
+      io.rancher.container.hostname_override: container_name
+      io.rancher.container.start_once: true
+    volumes:
+      - mongodata:/data/db
+    entrypoint: /bin/true
+    image: busybox
+volumes:
+  mongodata:
+    driver: ${VOLUME_DRIVER}

templates/MongoDB/3/rancher-compose.yml

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+version: '2'
+catalog:
+  name: "MongoDB"
+  version: "3.4-rancher1"
+  description: "MongoDB Replica Set"
+  uuid: mongodb-1
+  minimum_rancher_version: v0.46.0
+  questions:
+    - variable: replset_name
+      description: "Name of the MongoDB replicaSet"
+      label: "ReplicaSet Name"
+      type: "string"
+      required: true
+      default: "rs0"
+    - variable: host_label
+      label: "Host Label to MongoDB Tags"
+      description: |
+        Host label to use as MongoDB 'value' tag.
+        Example: 'database'
+      required: false
+      type: "string"
+    - variable: debug
+      description: "Enable Debug log for Mongo containers"
+      label: "Debug"
+      type: "string"
+      required: false
+      default: ""
+    - variable: "VOLUME_DRIVER"
+      description: "The VOLUME driver to associate with this server"
+      label: "VOLUME Driver"
+      required: true
+      default: "local"
+      type: enum
+      options:
+        - local
+        - rancher-nfs
+        - rancher-efs
+        - rancher-ebs
+    - variable: mongo_scale
+      description: "How many containers the MongoDB will scale to?"
+      label: "mongo scale"
+      type: "int"
+      required: true
+      default: "3"
+services:
+  mongo-cluster:
+    scale: ${mongo_scale}
+    retain_ip: true
+    metadata:
+      mongo:
+        yml:
+          replset.name: "${replset_name}"

templates/MongoDB/config.yml

@@ -1,5 +1,5 @@
 name: MongoDB
 description: |
   MongoDB Replica Set.
-version: 3.2-rancher2
+version: "3.4-rancher1"
 category: Databases