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Making search head clustering

Path Finder

Hi,

I need step to step process of adding new search head into my splunk instances. My splunk setup as follows:
1. one search head
2. one deployment server
3. three search peers.

So i am adding another search head that means I have ti create a search head cluster and do the configuration. Can any one help me with the complete step?

Thanks.

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SplunkTrust
SplunkTrust

You must have at least three search heads to create a search head cluster (SHC). You will also need a search head deployer, which possibly can be done by your deployment server.

However, just because you have more than one search head does not mean you need a SHC. You can have two independent search heads, but they won't share capacity and will be harder to manage.

If you still want an SHC, Splunk docs explain how to do it at https://docs.splunk.com/Documentation/Splunk/7.2.4/DistSearch/SHCdeploymentoverview.

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Explorer
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SplunkTrust
SplunkTrust

You must have at least three search heads to create a search head cluster (SHC). You will also need a search head deployer, which possibly can be done by your deployment server.

However, just because you have more than one search head does not mean you need a SHC. You can have two independent search heads, but they won't share capacity and will be harder to manage.

If you still want an SHC, Splunk docs explain how to do it at https://docs.splunk.com/Documentation/Splunk/7.2.4/DistSearch/SHCdeploymentoverview.

---
If this reply helps you, an upvote would be appreciated.

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Path Finder

@richgalloway Hi, I will have only two search head. Don't I need SHC?

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Splunk Employee
Splunk Employee

Not with two search heads, no. Quoting from System requirements and other deployment considerations for search head clusters:

The cluster must contain at a minimum the number of members needed to fulfill both of these requirements:

For example, if your replication factor is either 2 or 3, you need at least three instances.

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Path Finder

@ChrisG Thank you so much.

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Path Finder

@ChrisG @richgalloway I am having trouble in finding the security key when adding the new search head into the cluster. Do you know where I can or how I can get the security key when adding the new search head into clustering.

Thanks,

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Ultra Champion

I think you are refering to the pass4SymmKey. Review to Set up the deployer

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Splunk Employee
Splunk Employee

Have you read the docs already? There is extensive information about search head clustering, starting with About search head clustering in the Distributed Search manual. See also Search head clustering architecture and Deploy a search head cluster, among many other topics in that manual.