Like the SHD and DS, the MN pushes apps to members of the Index Cluster. The Master Node (MN) is sometimes referred to as the Indexer Cluster Master. This way the search head users can save their own KOs to that app’s local/ folder and it takes precedence over the pushed default/ folder. So the SHD will merge the local/ and default/ folders together and push that merged folder to the default/ folder at the destination client (ie. The SHD pushes apps in a different way because Splunk users need the option to save their own knowledge objects (KOs). It restarts each member one-by-one to keep availability as high as possible since the search heads are customer facing. A rolling restart is a safer restart as it does not restart each member at the same time. This process will also trigger a rolling restart of all the search heads. The Search Head Deployer (SHD) is like a DS in that it pushes apps to all of the Splunk search heads that are included in the search head cluster. The DS has a list of servers and another list of apps that should go to those servers, and then copies those apps (exactly as they are found on the DS) to each of those servers. But if you have a DS, you can push these changes to all 100 servers at the same time and automatically restart each instance of Splunk. If you do this manually, you will have to SCP the new files to the server and then restart all Splunk instances. If you have one app that is installed on 100 splunk servers, you need to push those changes to all those servers. A deployment server comes in handy when your Splunk environment starts growing in size as it saves the average Splunk admin a lot of time. Apps are similar to apps on your phone in that they perform a specific function. BackgroundĪ Deployment Server (DS) is an instance of Splunk that pushes Splunk apps to other Splunk servers or instances. But what happens if you actually do it? Well, I tried it and it turned out to be a lot more complicated than I thought.įor reference, the information presented here is accurate up to Splunk version 7.2.6. It sounds nice in theory and if you listen to Splunk’s official take on the matter, it sounds quite simple. If you’re a splunk administrator, or if you’ve taken the splunk administrator classes, you may have heard of a concept whereby you can use the Deployment Server to push apps to the Search Head Deployer (aka the Deployer) and the Master Node (aka the Indexer Cluster Master).
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