# Stdout output with plain codec

**URL:** <https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712>\
**Category:** Logstash\
**Created:** [February 13, 2018, 10:49pm UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712 "2018-02-13T22:49:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [February 13, 2018, 10:49pm UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712/1 "2018-02-13T22:49:57Z")

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I created a stdout output with no codec specified. When I input a line to stdin I get "2018-02-13T22:44:04.309Z t %{message}". That seems wrong.

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [February 14, 2018, 7:24am UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712/2 "2018-02-14T07:24:49Z")

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Which version of Logstash? Could you give a complete recipe for reproducing the problem? Because it works fine for me with an old version.

```nohighlight
$ echo foo | /opt/logstash/bin/logstash -e 'input { stdin {} } output { stdout {} }'
Settings: Default pipeline workers: 8
Pipeline main started
2018-02-14T07:24:16.597Z lnxolofon foo
Pipeline main has been shutdown
stopping pipeline {:id=>"main"}

```

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [February 14, 2018, 12:55pm UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712/3 "2018-02-14T12:55:58Z")

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@magnusbaeck I get it with

echo '{ "foo" : 1}' | /usr/share/logstash/bin/logstash -e 'input { stdin { codec =\> "json\_lines" } } output { stdout { } }'

This is in logstash 6.2.0. It does not happen if no codec is specified for stdin. With a rubydebug codec I do not see a message field in the output, just foo, so I guess that explains why it is not substituted. Similarly for a json input codec, there is no message field in the event.

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [February 14, 2018, 1:29pm UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712/4 "2018-02-14T13:29:55Z")

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Yes, this is expected.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 14, 2018, 1:30pm UTC](https://discuss.elastic.co/t/stdout-output-with-plain-codec/119712/5 "2018-03-14T13:30:05Z")

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