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Forwarding logs to Splunk Cloud

This guide would cover configuring your app builder application to forward application logs to your Splunk Cloud account.


  1. An index on your Splunk Cloud account. To create a new index, you can follow Splunk's guide here.
  2. Local development setup for your App Builder application.
  3. The latest version of AIO CLI. Check your version by running aio --version. To update run npm install -g @adobe/aio-cli.

Steps to configure Log Forwarding#

1. Set up Splunk HTTP Event Collector#

  1. Go to your Splunk Cloud account home and select Settings from the ribbon on top. On the Settings pane, select Data Inputs.

  2. Click on the + Add New button corresponding to the HTTP Event Collector input type.

  3. On the Select Source screen:

    1. Type in an input name. For example: My App Builder Application
    2. Ensure that the Enable Indexer Acknowledgment checkbox is not ticked.
    3. Click the Next button on top.
  4. On the Input Settings screen:

    1. Set the source type to automatic. The forwarded logs would be sent with the sourcetype field set to _json.
    2. From the list of indexes, only select the index on which you wish to receive logs from your App Builder application.
    3. Click the Review button on top.
  5. On the Done screen:

    1. Copy the value of the token value to be used later.

2. Getting Splunk Host and Port#

  1. To find out your hostname and port number, read the Send data to HTTP Event Collector on Splunk Cloud Platform section on Splunk's documentation here.

  2. Confirm whether you have got the correct hostname and port number by executing the following cURL request. If you get a 200 OK response, you are good to proceed.

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    1curl -X POST 'https://<hostname>:<port>/services/collector' \
    2-H "Authorization: Splunk <token>" \
    3-d '{"event": "hello world"}'

    Note: The token value is from step 1.5.1

3. Set up Log Forwarding in App Builder#

  1. Open terminal and navigate to the App Builder project directory on your machine.

  2. Run the following command and supply the values from previous steps

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    1aio app config set log-forwarding
    2? select log forwarding destination: Splunk HEC
    3? host: <hostname>
    4? port: <port_number>
    5? index: <index>
    6? hec_token: <token>


    • Make sure to not prefix the protocol (http:// or https://) before the hostname.
    • Replace the value of hostname and port as ascertained in step 2.2.1.
    • Replace the value of token from step 1.5.1.
  1. Verify that the config change has taken effect

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    aio app config get log-forwarding
  2. Execute an action in your App Builder application workspace to generate logs.

  3. Go to Splunk Home > Search and run the query

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  4. If you don't see any logs in Splunk, please check the log forwarding errors.

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    aio app config get log-forwarding errors

    Note: If you are unable to set up log forwarding correctly, please visit our App Builder forums for support.

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