# Metrics filter and InfluxDB output

**URL:** https://discuss.elastic.co/t/metrics-filter-and-influxdb-output/58834
**Category:** Logstash
**Created:** [August 24, 2016, 2:50pm UTC](https://discuss.elastic.co/t/metrics-filter-and-influxdb-output/58834 "2016-08-24T14:50:46Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![elvarb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/elvarb/32/44840_2.png) [@elvarb](https://discuss.elastic.co/u/elvarb)
#### Post date: [August 24, 2016, 2:50pm UTC](https://discuss.elastic.co/t/metrics-filter-and-influxdb-output/58834/1 "2016-08-24T14:50:46Z")

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It seems such a good fit, but I'm not seeing how these fit

I have a metric filter like this

```
        metrics {
                meter => "winevent_%{Channel}"
                add_tag => "metric"
        }

```

But how can I transform that output so that %{Channel} becomes a tag value?

---

<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: [July 6, 2017, 4:41am UTC](https://discuss.elastic.co/t/metrics-filter-and-influxdb-output/58834/2 "2017-07-06T04:41:49Z")

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