Date pattern in file input path

Elastic Stack Logstash
3

Depending on your platform you might be able to set an environment variable to the name and then reference that in the config. For example, I have a nightly job that processes the prior day index. In the script that runs I set

 INDEXDATE=`date --date="-1 day" '+%Y.%m.%d'`

and in the logstash configuration I have an elasticsearch input that reads

index => "logstash-${INDEXDATE}"

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