Upgrade the Splunk Add-on for Windows in a distributed deployment

For optimized use of your Splunk license, upgrade the Splunk Add-on for Windows by installing it on your Splunk platform components in the following order:

1. Search heads
2. Search head clusters
3. Nonclustered indexers, Windows heavy forwarders, and intermediate forwarders
4. Clustered indexers
5. Deployment servers

Upgrade the Splunk Add-on for Windows on a search head

Follow these steps to install your upgraded version of the Splunk Add-on for Windows on each search head:

1. Download the upgraded version of the Splunk Add-on for Windows from Splunkbase.
2. Expand your downloaded file.
3. On each search head, copy the expanded folder into the $SPLUNK_HOME/etc/apps directory.
4. Restart each search head.

Upgrade the Splunk Add-on for Windows on a search head cluster

To upgrade an add-on on a search head cluster, remove the previous version and push the upgraded version to the cluster:

1. Remove the existing Splunk_TA_Windows folder from the $SPLUNK_HOME/etc/shcluster/apps directory.
2. Push this change to the cluster using the splunk apply shcluster-bundle command.
3. Download the upgraded version of the Splunk Add-on for Windows from Splunkbase.
4. Expand your downloaded file.
5. Copy the expanded folder into the $SPLUNK_HOME/etc/shcluster/apps directory.
6. Push the upgraded version to the cluster using the splunk apply shcluster-bundle command.

Upgrade the Splunk Add-on for Windows on nonclustered indexers, Windows heavy forwarders, and intermediate forwarders

Complete the following steps to upgrade these components:

1. Download the upgraded version of the Splunk Add-on for Windows from Splunkbase.
2. Expand your downloaded file to a temporary location.
3. Remove the following files:
   1. <app>/bin
   2. <app>/default/eventgen.conf
   3. <app>/default/inputs.conf
   4. <app>/default/wmi.conf
   5. <app>/default/indexes.conf
4. Copy the expanded Splunk_TA_Windows folder to the $SPLUNK_HOME/etc/apps directory.

Upgrade the Splunk Add-on for Windows on an indexer cluster

Follow these steps to upgrade the Splunk add-on for Windows on each of your indexer clusters:

1. Download the upgraded version of the Splunk Add-on for Windows from Splunkbase.
2. Expand your downloaded file.
3. Review the use of index in all inputs associated with the Splunk Add-on for Windows and identify all indexes
4. Ensure each index has been defined in indexes.conf in the appropriate location under $SPLUNK_HOME/etc/master_apps
5. Copy the expanded Splunk_TA_Windows folder to the $SPLUNK_HOME/etc/master_apps directory on the cluster master.
6. Apply the cluster bundle

Upgrade the Splunk Add-on for Windows using a deployment server

You can use a deployment server to upgrade the Splunk Add-on for Windows in your distributed deployment:

1. Download the upgraded version of the Splunk Add-on for Windows from Splunkbase.
2. Expand your downloaded file.
3. Copy the expanded Splunk_TA_Windows folder to the $SPLUNK_HOME/etc/deployment-apps directory.
4. Restart the deployment server.