Scale a MongoDB Cluster Vertically

MongoDB Business

DBaaS allows you to scale up and down the size of your database instances. Database instance sizes are managed similarly to Cubes; each template exposes a combination of resource sizes that can be assigned to any of your clusters.

Note: You can get a list of available MongoDB Templates through the API.

curl --include \
    --user "[email protected]:Mb2.r5oHf-0t" \
    --header "Content-Type: application/json" \
    https://api.ionos.com/databases/mongodb/templates

To change the template, issue a PATCH request containing the MongoDB templateID.

Endpoint

Use the following endpoint to change the template: https://api.ionos.com/databases/mongodb/clusters/{clusterId}

Note: The sample cluster UUID is d02de413-d5af-4104-a6f9-3a3c2766ee61.

Request

curl --include \
    --request PATCH \
    --user "[email protected]:Mb2.r5oHf-0t" \
    --header "Content-Type: application/json" \
    --data-binary '{
      "properties": {
        "templateID": "6b78ea06-ee0e-4689-998c-fc9c46e781f6"
      }
    }' 

Response

{
  "type": "cluster",
  "id": "d02de413-d5af-4104-a6f9-3a3c2766ee61",
  "metadata": {
    "state": "BUSY",
    "health": "DEGRADED",
    "createdDate": "2020-12-10T12:37:50.000Z",
    "createdBy": "[email protected]",
    "createdByUserId": "012342f-411f-1eeb-9d07-046c59cc737e"
  },
  "properties": {
    "type": "replicaset",
    "edition": "business",
    "displayName": "Represents database name",
    "location": "de/fra",
    "connections": [
      {
        "datacenterId": "b1432c51-c20a-4f83-876f-c3a8a9e1fbec",
        "lanId": "28",
        "cidrList": [
          "10.1.1.3/24",
          "10.1.1.4/24",
          "10.1.1.5/24"
        ]
      }
    ],
    "templateID": "15c6dd2f-02d2-4987-b439-9a58dd59ecc3",
    "instances": 3,
    "maintenanceWindow": {
      "time": "16:30:59",
      "dayOfTheWeek": "Monday"
    },
    "connectionString": "mongodb+srv://m-65f4a879f126e3c4.mongodb.de-fra.ionos.com"
  }
}

The provisioning engine will delete a secondary replica and create a new server of the desired size. Once ready, it will replicate the existing data to this new server via the MongoDB Replication mechanism. During this procedure, the cluster should operate normally. When the provisioning engine identifies the new server is complete and healthy, it will continue the rollout for every remaining secondary replica up to the primary.

Note: Be prepared for possible downtime in case of a cluster with only one replica.

MongoDB Enterprise