When a forwarder phones home to a Deployment Server it compares the check-sum value of the forwarder's app to the Deployment Server's app. What…

The Splunk Deployment Server acts as the central, authoritative source for configurations (apps). When a deployment client (forwarder) "phones home," it sends a list of its apps and their corresponding checksums. The Deployment Server compares these checksums against its own master copies. If a checksum for a specific app does not match, the server identifies the client's version as incorrect or outdated. Consequently, the server sends the entire, correct app bundle to the client. The client then replaces its local version with the newly downloaded one, ensuring configuration consistency across all managed instances.

B. Checksum values are cryptographic hashes used for integrity checks, not for version comparison based on magnitude (greater/lesser).

C. The deployment server process is designed for consistency and replaces the entire app; it does not perform a file-level merge of configurations.

D. The update process is automated to manage numerous clients efficiently; requiring manual administrator intervention for each mismatch would defeat its purpose.

1. Splunk Documentation, Updating Splunk Enterprise Instances, Version 9.2.1, "How deployment works".

The documentation states: "The client sends the server information about its current state, including the checksum for each app that it got from the server. The server compares the client's app checksums against its own. If any checksums do not match, the server sends the new content to the client." This confirms the replacement behavior.

2. Splunk Documentation, Administering Splunk Enterprise, Version 9.2.1, "About deployment server and forwarder management".

This section describes the Deployment Server as the tool to "distribute configurations, apps, and content" to other Splunk instances. The mechanism described is a push/pull of entire application bundles to ensure uniformity, not merging or manual intervention.