# Elastic ingest pipeline grok filter error

**URL:** <https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706>\
**Category:** Kibana\
**Tags:** ingest-pipeline\
**Created:** [December 4, 2020, 10:03pm UTC](https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706 "2020-12-04T22:03:06Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![vsv0001](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vsv0001/32/124730_2.png) [@vsv0001](https://discuss.elastic.co/u/vsv0001)\
**Post date:** [December 4, 2020, 10:03pm UTC](https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706/1 "2020-12-04T22:03:06Z")

</div>

hi,  
I am trying to to build an ingest pipeline using grok processor  
my grok filter works on the Kibana-\>console .

grok filter

```auto
^%{YEAR}-%{MONTHNUM}-%{MONTHDAY} %{TIME}.%{LOGLEVEL:log-level} : \[%{DATA:user}] \[%{DATA:correlation-id}] 

```

```auto
2020-11-12 19:01:26.999 INFO : [http-nio-9090-exec-34] [xyz.b227ecf2-b770-468e-bb27-3a2c9e3d97b0]

```

but when i use the same one in

```auto
POST _ingest/pipeline/_simulate
{
  "pipeline": {
  "description" : "parse multiple patterns",
  "processors": [
    {
      "grok": {
        "field": "message",
        "patterns": [" ^%{YEAR}-%{MONTHNUM}-%{MONTHDAY} %{TIME}.%{LOGLEVEL:log-level} : \[%{DATA:user}] \[%{DATA:correlation-id}]"]
      }
    }
  ]
},
"docs":[
  {
    "_source": {
      "message": "2020-11-12 19:01:26.999 INFO : [http-nio-9090-exec-34] [xyz.b227ecf2-b770-468e-bb27-3a2c9e3d97b0]"
    }
  }
  ]
}

```

The problem seems to be \ in the grok filter. Not sure why.  
Appreciate any suggestions or pointers.

Thanks

---

<div class="post-metadata">

**Author:** ![aaron-nimocks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aaron-nimocks/32/73965_2.png) [@aaron-nimocks](https://discuss.elastic.co/u/aaron-nimocks)\
**Post date:** [December 4, 2020, 10:19pm UTC](https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706/2 "2020-12-04T22:19:39Z")

</div>

Welcome @vsv0001

Give this a go.

```auto
POST _ingest/pipeline/_simulate
{
  "pipeline": {
  "description" : "parse multiple patterns",
  "processors": [
    {
      "grok": {
        "field": "message",
        "patterns": ["^%{YEAR}-%{MONTHNUM}-%{MONTHDAY} %{TIME}.%{LOGLEVEL:log-level} : \\[%{DATA:user}\\] \\[%{DATA:correlation-id}\\]"]
      }
    }
  ]
},
"docs":[
  {
    "_source": {
      "message": "2020-11-12 19:01:26.999 INFO : [http-nio-9090-exec-34] [xyz.b227ecf2-b770-468e-bb27-3a2c9e3d97b0]"
    }
  }
  ]
}

```

Or you can also do it like this.

```auto
"patterns": [
            """^%{YEAR}-%{MONTHNUM}-%{MONTHDAY} %{TIME}.%{LOGLEVEL:log-level} : \[%{DATA:user}\] \[%{DATA:correlation-id}\]"""
          ]

```

---

<div class="post-metadata">

**Author:** ![vsv0001](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vsv0001/32/124730_2.png) [@vsv0001](https://discuss.elastic.co/u/vsv0001)\
**Post date:** [December 8, 2020, 3:05am UTC](https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706/3 "2020-12-08T03:05:03Z")

</div>

Thank you. 😃

---

<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:** [January 5, 2021, 3:05am UTC](https://discuss.elastic.co/t/elastic-ingest-pipeline-grok-filter-error/257706/4 "2021-01-05T03:05:09Z")

</div>

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