https://docs.splunk.com/Documentation/Splunk/8.2.2/Updating/Aboutdeploymentserver
"The deployment server is the tool for distributing configurations, apps, and content updates to groups of Splunk Enterprise instances."

https://docs.splunk.com/Documentation/Splunk/latest/Data/Configureeventlinebreaking Attribute : SHOULD_LINEMERGE = [true|false] Description : When set to true, the Splunk platform combines several input lines into a single event, with configuration based on the settings described in the next section.

https://www.splunk.com/en_us/blog/tips-and-tricks/what-is-this-fishbucket-thing.html
"Every Splunk instance has a fishbucket index, except the lightest of hand-tuned lightweight forwarders, and if you index a lot of files it can get quite large. As any other index, you can change the retention policy to control the size via indexes.conf" Reference https://community.splunk.com/t5/Archive/How-to-reindex-data-from-a-forwarder/td-p/93310

https://answers.splunk.com/answers/131127/scripted-authentication.html
Scripted Authentication: An option for Splunk Enterprise authentication. You can use an authentication system that you have in place (such as PAM or RADIUS) by configuring authentication.conf to use a script instead of using LDAP or Splunk Enterprise default authentication.

- etc/system/local/ has better precedence at index time - for identical settings in the same file, the last one overwrite others, see : https://community.splunk.com/t5/Getting-Data-In/What-is-the-precedence-for-identical-stanzas-within-a-single/m-p/283566