A simple licensing question.
let's assume the environment is like this:
Q. In this case above, do I need 2 different indexer license / or can I have 1 large indexer license seeded into both indexers?
Q. In the case above, Does the search head need a license too? Is there such thing as search head license?
Thanks for your help in advance~!
Splunk is licensed by how much data you ingest daily. There is no specific licensing for individual servers. You should designate one Splunk instance, often a search head or a deployment server, as the license master and install your Enterprise license onto it. In all other Splunk Enterprise instances, you should point at that server's splunkd port for remote license. This can be accomplished by distributing the correct server.conf snippet from the deployment server, or through manual configuration in splunkweb.
A typical choice for a search head license is the splunk-forwarder.license which is a 1MB enterprise license that you are welcome to use on any search heads and forwarders. This is in $SPLUNK_HOME/etc, just waiting for you to copy/symlink it to splunk.license.