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[DOC] precedence between environment variables and yml in docker #12198

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merged 2 commits into from Mar 29, 2022
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[DOC] precedence between environment variables and yml in docker #12198

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[DOC] precedence between environment variables and yml in docker
jsvd Aug 21, 2020
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Update docs/static/docker.asciidoc
jsvd Mar 29, 2022
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4 changes: 2 additions & 2 deletions docs/static/docker.asciidoc
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Expand Up @@ -140,11 +140,11 @@ that you don't retain the example config from the base image.
Under Docker, Logstash settings can be configured via environment
variables. When the container starts, a helper process checks the environment
for variables that can be mapped to Logstash settings. Settings that are found
in the environment are merged into `logstash.yml` as the container starts up.
in the environment override those in the `logstash.yml` as the container starts up.

For compatibility with container orchestration systems, these environment
variables are written in all capitals, with underscores as word
separators
separators.

Some example translations are shown here:

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