# Why won't metricbeat capture system.core.\* fields?

**URL:** <https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226>\
**Category:** Beats\
**Tags:** metricbeat\
**Created:** [December 3, 2018, 5:42pm UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226 "2018-12-03T17:42:52Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![hokiegeek2](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hokiegeek2/32/11076_2.png) [@hokiegeek2](https://discuss.elastic.co/u/hokiegeek2)\
**Post date:** [December 3, 2018, 5:42pm UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226/1 "2018-12-03T17:42:52Z")

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I can capture system.cpu\* and system.process\* metrics with the attached metribeat.full.yaml file but not system.core.\* or system.diskio.\*. Any ideas?

 ![stuff](https://us1.discourse-cdn.com/elastic/original/3X/2/1/21dcc0c4b3657100a5e08adf0c7ca25d3af84b83.jpeg)

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**Author:** ![Kaiyan\_Sheng](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kaiyan_sheng/32/38247_2.png) [@Kaiyan\_Sheng](https://discuss.elastic.co/u/Kaiyan_Sheng)\
**Post date:** [December 4, 2018, 4:22am UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226/2 "2018-12-04T04:22:41Z")

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Hello! What does your system.yml look like?

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<div class="post-metadata">

**Author:** ![hokiegeek2](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hokiegeek2/32/11076_2.png) [@hokiegeek2](https://discuss.elastic.co/u/hokiegeek2)\
**Post date:** [December 4, 2018, 2:06pm UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226/3 "2018-12-04T14:06:16Z")

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HI @Kaiyan_Sheng,

Thanks for the follow-up! You were on the right track--I needed to enable diskio and core in the server.yml file.

Thanks again!

--John

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**Author:** ![Kaiyan\_Sheng](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kaiyan_sheng/32/38247_2.png) [@Kaiyan\_Sheng](https://discuss.elastic.co/u/Kaiyan_Sheng)\
**Post date:** [December 4, 2018, 2:27pm UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226/4 "2018-12-04T14:27:43Z")

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No problem 🙂 Im glad it works now!

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 1, 2019, 2:28pm UTC](https://discuss.elastic.co/t/why-wont-metricbeat-capture-system-core-fields/159226/5 "2019-01-01T14:28:33Z")

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