# Pipeline does'n work

**URL:** <https://community.graylog.org/t/pipeline-doesn-work/18666>\
**Category:** Graylog Central (peer support)\
**Created:** [February 3, 2021, 9:18am UTC](https://community.graylog.org/t/pipeline-doesn-work/18666 "2021-02-03T09:18:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Sergei](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sergei](https://community.graylog.org/u/Sergei)\
**Post date:** [February 3, 2021, 9:18am UTC](https://community.graylog.org/t/pipeline-doesn-work/18666/1 "2021-02-03T09:18:06Z")

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Hello!

1. I use Graylog v3.3.9+abab7dc
2. I created GELF-HTTP Input.
3. I added stream for this input.
4. I created pipeline for new stream.
5. I added simple rule  
rule “Add date fields”  
when  
true  
then  
set\_field(“let\_1”, “1”);  
end
6. There is no new field (“let\_1”) in new stream’s messages.
7. “Pipeline Processor” is enabled.

Could you help me?

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<div class="post-metadata">

**Author:** ![shoothub](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/shoothub/32/6412_2.png) [@shoothub](https://community.graylog.org/u/shoothub)\
**Post date:** [February 4, 2021, 3:14pm UTC](https://community.graylog.org/t/pipeline-doesn-work/18666/2 "2021-02-04T15:14:34Z")

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Plese be more verbose, especialy how did you configure stream connection for pipeline:  
[https://docs.graylog.org/en/4.0/pages/pipelines/stream\_connections.html#stream-connections](https://docs.graylog.org/en/4.0/pages/pipelines/stream_connections.html#stream-connections)

Check also you processing order, _Message Filter Chain_ and _Pipeline Processor_

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<div class="post-metadata">

**Author:** ![Sergei](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sergei](https://community.graylog.org/u/Sergei)\
**Post date:** [February 9, 2021, 3:14pm UTC](https://community.graylog.org/t/pipeline-doesn-work/18666/3 "2021-02-09T15:14:54Z")

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You are right. Processing order is important.  
Thanks.

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/3X/c/7/c7c09c6b5099570133d6502b83f50ba4430de5b6.png) [@system](https://community.graylog.org/u/system)\
**Post date:** [February 23, 2021, 3:15pm UTC](https://community.graylog.org/t/pipeline-doesn-work/18666/4 "2021-02-23T15:15:21Z")

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Closed on February 23, 2021, 3:15pm UTC

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