# Unexpected HTTP error

**URL:** <https://forum.crunchdao.com/t/unexpected-http-error/261>\
**Category:** ADIA Lab\
**Created:** [July 23, 2023, 12:01pm UTC](https://forum.crunchdao.com/t/unexpected-http-error/261 "2023-07-23T12:01:57Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ruling-samarth](https://forum.crunchdao.com/user_avatar/forum.crunchdao.com/ruling-samarth/32/122_2.png) [@ruling-samarth](https://forum.crunchdao.com/u/ruling-samarth)\
**Post date:** [July 23, 2023, 12:01pm UTC](https://forum.crunchdao.com/t/unexpected-http-error/261/1 "2023-07-23T12:01:57Z")

</div>

Hi,  
Facing issue while using H2o library which creates a cloud cluster for processing.It ran fine on local run. Can someone suggest how to fix such issues.

[55:17.84] H2OConnectionError: Unexpected HTTP error: HTTPConnectionPool(host=‘localhost’, port=54321): Max retries exceeded with url: /3/Metadata/schemas/CloudV3 (Caused by NewConnectionError(‘\<urllib3.connection.HTTPConnection object at 0x7f6ebda05580\>: Failed to establish a new connection: [Errno 101] Network is unreachable’))

---

<div class="post-metadata">

**Author:** ![enzo](https://forum.crunchdao.com/user_avatar/forum.crunchdao.com/enzo/32/15_2.png) [@enzo](https://forum.crunchdao.com/u/enzo)\
**Post date:** [July 23, 2023, 1:25pm UTC](https://forum.crunchdao.com/t/unexpected-http-error/261/2 "2023-07-23T13:25:38Z")

</div>

Its because the Cloud Environment does not have access to Internet.  
Its to avoid data leaking and irreproducible models.

To be more specific:

- CPU Runners have their networks calls intercepted then cancelled.
- GPU Runners have been put in a network sandbox. (since you need sockets to interact with a GPU)

Meaning, if you are only connecting to localhost, you should use a GPU Runner.

Why the two different methods? Its a technical limitation of the infrastructure we have.  
Sorry about that