# Logstash-plugin kv useragent question

**URL:** <https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182>\
**Category:** Logstash\
**Created:** [October 17, 2023, 9:48am UTC](https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182 "2023-10-17T09:48:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mick1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mick1/32/80138_2.png) [@Mick1](https://discuss.elastic.co/u/Mick1)\
**Post date:** [October 17, 2023, 9:48am UTC](https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182/1 "2023-10-17T09:48:37Z")

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Dear ELK technical experts  
I have a basic logstash kv question to ask, experts please help.

message  
data1:abcde,;,useragent:Mozilla/5.0 (X11; Linux x86\_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36 Google-PageRenderer Google (+https://developers.google.com/+/web/snippet/)

### ---- Logstash conf ----

input{stdin{}}  
filter {  
kv {  
source =\> "message"  
field\_split =\> ",;,"  
value\_split =\> ":"  
}  
}  
output{stdout{}}

### expected outcome

"data1" =\> "abcde",  
"useragent" =\> "Mozilla/5.0 (X11; Linux x86\_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36 Google-PageRenderer Google (+https://developers.google.com/+/web/snippet/)",

### actual results

```
**" like Gecko) Chrome/56.0.2924.87 Safari/537.36 Google-PageRenderer Google (+https"** => "//developers.google.com/+/web/snippet/)",
                                                                            "data1" => "abcde",
                                                                        **"useragent"** => **"Mozilla/5.0 (X11"**

```

---

<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:** [October 17, 2023, 3:46pm UTC](https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182/2 "2023-10-17T15:46:01Z")

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> [@Mick1](#):
>
> field\_split =\> ",;,"

The field\_split option is a character class, so that will split fields whenever it sees either a comma or a semi-colon. You should use the [field\_split\_pattern](https://www.elastic.co/guide/en/logstash/current/plugins-filters-kv.html#plugins-filters-kv-field_split_pattern) option instead.

---

<div class="post-metadata">

**Author:** ![Mick1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mick1/32/80138_2.png) [@Mick1](https://discuss.elastic.co/u/Mick1)\
**Post date:** [October 18, 2023, 12:53am UTC](https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182/3 "2023-10-18T00:53:47Z")

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thanks badger

Problem solved, thank you for your help

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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:** [November 15, 2023, 12:54am UTC](https://discuss.elastic.co/t/logstash-plugin-kv-useragent-question/345182/4 "2023-11-15T00:54:27Z")

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