# How to save only one data into mongodb by logstash-output-mongodb plugin?

**URL:** <https://discuss.elastic.co/t/how-to-save-only-one-data-into-mongodb-by-logstash-output-mongodb-plugin/259702>\
**Category:** Logstash\
**Created:** [December 28, 2020, 3:58am UTC](https://discuss.elastic.co/t/how-to-save-only-one-data-into-mongodb-by-logstash-output-mongodb-plugin/259702 "2020-12-28T03:58:21Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![iooi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/iooi/32/79231_2.png) [@iooi](https://discuss.elastic.co/u/iooi)\
**Post date:** [December 28, 2020, 3:58am UTC](https://discuss.elastic.co/t/how-to-save-only-one-data-into-mongodb-by-logstash-output-mongodb-plugin/259702/1 "2020-12-28T03:58:22Z")

</div>

Like this output configuration, just want to send `id` to mongodb

```auto
output {
  mongodb {
    uri => 'mongodb://localhost'
    database => "testDB"
    collection => 'testCollection'
    codec => line { format => "%{id}"}
  }
}

```

But after ran it, every data had been saved into mongodb include `id`.

With Redis, it can work:

```auto
output {
  redis {
    host => ["127.0.0.1:6379"]
    data_type => "list"
    key => "ID"
    codec => line { format => "%{id}"}
  }
}

```

How to do with mongo if don't set a `filter` to reach the same result?

---

<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 25, 2021, 3:58am UTC](https://discuss.elastic.co/t/how-to-save-only-one-data-into-mongodb-by-logstash-output-mongodb-plugin/259702/2 "2021-01-25T03:58:32Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.