![]() By running the btool and troubleshooting commands, we came to know t. Now the issue is few of the logs from a folder are missing on Indexers. These Universal Forwarders are managed by Deployment Server. create a file: nf in /opt/splunkforwarder/etc/apps/search/local/. If you use ' CRCSALTSaves you from using a really large initCrcLength (performance hit) but you don't get stuck with unread files due to similar CRCs. Step 4: Enable Receiving input on the Index Server Configure the Splunk Index. ![]() This is good for something like IIS logs that have large headers, but different file names for each new log. 400 nf about 393 attributes 393 blacklist, using 394 crcSalt. You can also use crcSalt = to salt the CRC with the file name. The input configuration specification file must be named, and must be located in SPLUNKHOME/etc/apps/ appname /README/. 440, 441 nf 416, 418 indextime search app URL 349 nf. One is changing the top of the file within the first initCrcLength bytes so a new CRC is calculated, another is using btprobe to reset the file, third is to salt the CRC.ĬrcSalt is a string that's added to the first initCrcLength bytes of the file to change the CRC to force an entire monitor statement to reingest the data associated with all that input statements monitored files (so be careful with it!). Read more here - nf - Splunk Documentation-An upvote would be appreciated if it helps Tags (1) Tags: initCrcLength. one thing that straight popped into my eyes is crcSalt This in dangerous on rotated log files, because it could lead to the log file being re-indexed after it has rolled. crcSalt![]() There are a couple of ways to change the CRC to make splunk no longer recognize the file, forcing it to reread it. Edit the nf file and instruct Splunk to blacklist the gz files created by logrotate. It stores this along with how far it's read in to a file in the fishbucket ($SPLUNK_DB/fishbucket). It uses those charterers to calculate a CRC hash. Splunk uses a certain amount of characters (as defined by initCrcLength, default being 256) to identify a file that it's already read.
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