# Dremio Ports in Use Message

**URL:** <https://community.dremio.com/t/dremio-ports-in-use-message/3488>\
**Category:** Uncategorized\
**Created:** [May 31, 2019, 4:55pm UTC](https://community.dremio.com/t/dremio-ports-in-use-message/3488 "2019-05-31T16:55:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ivy\_man](https://avatars.discourse-cdn.com/v4/letter/i/ecd19e/32.png) [@ivy\_man](https://community.dremio.com/u/ivy_man)\
**Post date:** [May 31, 2019, 4:55pm UTC](https://community.dremio.com/t/dremio-ports-in-use-message/3488/1 "2019-05-31T16:55:25Z")

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I can start and run the Windows Community version of Dremio without a problem but when I load a single node Hortonworks Sandbox using VirtualBox, Dremio squawks and give me “One of the ports Dremio requires is in use”

Now going through a few of the past post on this issue in the community, I have gone in and change the dremio.conf file to resolve for ZooKeeper port issues and added -  
services.coordinator.master.embedded-zookeeper.port:1234

I am running Windows 10, with Java™ SE Runtime Environment (build 1.8.0\_91-b15), and Dremio Version 3.2.0-201905102005330382-0598733.

I have run Windows netstat when VirualBox is running and I see no port conflicts with the main Dremio ports of 1234 (change from 2181), 9047, 31010, 45678. I am not sure how to identify the various Dremio data sources ports so not sure if that is were the problem is.

Keith

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**Author:** ![ben](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/ben/32/1367_2.png) [@ben](https://community.dremio.com/u/ben)\
**Post date:** [May 31, 2019, 7:22pm UTC](https://community.dremio.com/t/dremio-ports-in-use-message/3488/2 "2019-05-31T19:22:45Z")

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Are you trying to connect the Hortonworks sandbox as an HDFS source to Dremio? What port does the Namenode use for that VirtualBox?

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**Author:** ![ivy\_man](https://avatars.discourse-cdn.com/v4/letter/i/ecd19e/32.png) [@ivy\_man](https://community.dremio.com/u/ivy_man)\
**Post date:** [May 31, 2019, 9:27pm UTC](https://community.dremio.com/t/dremio-ports-in-use-message/3488/3 "2019-05-31T21:27:58Z")

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Yes,on my laptop, I am trying to connect to a VirtualBox Hortonworks Sandbox instance using the Community version of Dremio running under Windows.

I’m am no where near an expert on running Hadoop in a virtual environment so not sure I am answering your namenode question correctly. So using [http://localhost:50070](http://localhost:50070) it shows me - [sandbox-hdp.hortonworks.com:8020](http://sandbox-hdp.hortonworks.com:8020)

Keith