# Local Configuration File Management for Existing Collectors and Sources

With local configuration file management, all configuration is done through a configuration file. This approach allows you to create scripts to configure multiple Collectors and Sources or to create configuration backups.

## Step 1. Get a configuration file

The Sumo web application can generate ready-to-use JSON for the Sources that are already configured for the Collector. For additional details, see View or Download Collector or Source JSON Configuration

To get the JSON configuration and create a configuration file

1. In the Sumo web app select Manage Data > Collection > Collection
2. Select the information icon to the right of the Collector.
3. Copy and paste the displayed JSON into a new text file. Name the text file sources.json, or any other name that makes sense. The file must have a .json extension
4. Save the file to a location accessible by the Collector and make a note of the file path.

For more information on the configuration file see Options for Specifying Sources in Local Configuration Files.

## Step 2. Update user.properties

When a Collector starts it reads the syncSources parameter from the user.properties configuration file to determine the file path of the JSON file or folder with the Source configurations. The user.properties file is located in the Collector's config folder.

 Parameter Type Description syncSources String Sets the JSON file describing sources to configure on registration, which will be continuously monitored and synchronized with the Collector's configuration.

1. Open or create the user.properties file located at <CollectorInstallationFolder>/config.
syncSources=/path/to/sources.json
On Windows systems, use a double-backslash for the file path:
syncSources=C:\\path\\to\\sources.json
3. Save and close the file.

## Step 3. Make the switch

You can now move to the local configuration file management option, using the Sumo web application or the Collector Management API.

Do one of the following:

• In the Sumo web app, choose Local Configuration File in the Edit Collector dialog box.
• In the Collector Management API, use the PUT method to update the Collector's sourceSyncMode to "Json". For more information, see Collector API Methods and Examples. The following example shows the sourceSyncMode of a Collector using UI mode:

"sourceSyncMode":"UI",

## Step 4. Restart the Collector

Restart the Collector for the changes to take effect.

To restart the Collector:

• Mac/Linux: sudo ./collector restart
Windows: net restart sumo-collector

## Step 5. Verify the Sources are configured properly

Examine the Collector log file to verify that the Collector is ingesting data from all Sources.

## Editing the configuration file

You can edit the JSON configuration file at any time to edit Source attributes or add new Sources. When you delete Sources from the file they are deleted from the Collector.

After you finalize changes to the sources.json file, test the changes by deploying this configuration file to a Collector on a host that is NOT in production. After the file is validated, deploy the file to each host with Sources that need to be modified by overwriting the existing sources.json file. Collectors continually watch for updates to the sources.json file for changes. Any edits are immediately processed.