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add experimental notice for --allow-env flag

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Fixes #5036

Fixes #5611
This commit is contained in:
Pere Urbon-Bayes 2016-04-06 17:13:40 +02:00 • committed by DeDe Morton
parent 72ef80a478
commit 5e77562078
1 changed files with 3 additions and 0 deletions
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3
docs/static/configuration.asciidoc vendored
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@ -638,6 +638,9 @@ output {
[[environment-variables]]
=== Using Environment Variables in Configuration
This feature is _experimental_, to enable it you will need to run logstash with the `--allow-env` flag.
==== Overview
* You can set environment variable references into Logstash plugins configuration using `${var}` or `$var`.