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Create an Atlas Cluster Using a Configuration File

On this page

  • Prerequisites
  • Create an Atlas Cluster From a Configuration File
  • Export Existing Cluster Configuration Settings to a File
  • (Optional) Edit the Configuration File for the new Cluster
  • Create a New Cluster Using the Configuration File

This tutorial demonstrates how to use Atlas CLI commands to create a new Atlas cluster from a configuration file. Specifically, it demonstrates how to:

  1. Get the configuration settings of an existing Atlas cluster and save the settings to a configuration file using the atlas clusters describe command.

  2. Create an Atlas cluster from the configuration file using the atlas clusters create command.

Prerequisites

Before you begin, you must have the following:

  • An Atlas cluster

  • Atlas CLI

  • A profile that contains the IDs of the Atlas organization and project from where you wish to retrieve existing cluster settings and where you wish to create the new cluster.

Create an Atlas Cluster From a Configuration File

You can use the procedures in this section to easily create a new cluster by exporting settings from an existing cluster instead of manually creating a configuration file yourself.

Export Existing Cluster Configuration Settings to a File

1

Connect to your Atlas account for programmatic access if you haven't connected yet.

To learn more, see Connect from the Atlas CLI.

2

Run the following command to export the details of an existing cluster to a JSON configuration file named myCluster.

atlas clusters describe <cluster-name> --output json > myCluster.json

Replace <cluster-name> in the preceding command with the name of the existing cluster that you wish to clone.

(Optional) Edit the Configuration File for the new Cluster

1

Open the JSON file in a text editor to view the configuration settings.

Example

The following example uses the vi editor to view the replica set settings for an M10 cluster named mySandbox in the myCluster.json file.

vi myCluster.json
1{
2  "backupEnabled": true,
3  "biConnector": {
4    "enabled": false,
5    "readPreference": "secondary"
6  },
7  "clusterType": "REPLICASET",
8  "connectionStrings": {
9    "standard": "<connection-string>"
10  },
11  "diskSizeGB": 10,
12  "encryptionAtRestProvider": "NONE",
13  "groupId": "<group-id>",
14  "id": "<64403dd1f2a6b45e71527d5a>",
15  "mongoDBMajorVersion": "6.0",
16  "mongoDBVersion": "6.0.5",
17  "name": "mySandbox",
18  "paused": false,
19  "pitEnabled": true,
20  "stateName": "IDLE",
21  "replicationSpecs": [
22    {
23      "numShards": 1,
24      "id": "64403dbb0a052449df3d04ae",
25      "zoneName": "Zone 1",
26      "regionConfigs": [
27        {
28          "analyticsAutoScaling": {
29            "diskGB": {
30              "enabled": true
31            },
32            "compute": {
33              "enabled": true,
34              "scaleDownEnabled": true,
35              "minInstanceSize": "M10",
36              "maxInstanceSize": "M40"
37            }
38          },
39          "analyticsSpecs": {
40            "diskIOPS": 3000,
41            "ebsVolumeType": "STANDARD",
42            "instanceSize": "M10",
43            "nodeCount": 0
44          },
45          "electableSpecs": {
46            "diskIOPS": 3000,
47            "ebsVolumeType": "STANDARD",
48            "instanceSize": "M10",
49            "nodeCount": 3
50          },
51          "readOnlySpecs": {
52            "diskIOPS": 3000,
53            "ebsVolumeType": "STANDARD",
54            "instanceSize": "M10",
55            "nodeCount": 0
56          },
57          "autoScaling": {
58            "diskGB": {
59              "enabled": true
60            },
61            "compute": {
62              "enabled": true,
63              "scaleDownEnabled": true,
64              "minInstanceSize": "M10",
65              "maxInstanceSize": "M40"
66            }
67          },
68          "priority": 7,
69          "providerName": "AWS",
70          "regionName": "US_EAST_1"
71        }
72      ]
73    }
74  ],
75  "createDate": "2023-04-19T19:15:29Z",
76  "rootCertType": "ISRGROOTX1",
77  "versionReleaseSystem": "LTS",
78  "terminationProtectionEnabled": false
79}
2

(Optional) Make changes to the settings in the configuration file as needed.

To learn more about the optional and required settings, see Cluster Configuration File.

3

Save and close the configuration file.

Create a New Cluster Using the Configuration File

1

Connect to your Atlas account for programmatic access if you aren't already connected to your Atlas account.

To learn more, see Connect from the Atlas CLI.

2

Run the following command to create an Atlas cluster using the configuration file.

atlas clusters create <new-cluster-name> -f myCluster.json

Replace <new-cluster-name> in the preceding command with the name of the new cluster you wish to create.

3

Run the following command to check the status of the cluster.

atlas clusters watch <new-cluster-name>

Replace <new-cluster-name> in the preceding command with the name of the new cluster.

This command checks the cluster's status periodically until it reaches an IDLE state. Once the cluster reaches the expected state, the command prints "Cluster available."

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