# Gem Mirror Yaml file

**URL:** <https://www.ruby-forum.com/t/gem-mirror-yaml-file/196029>\
**Category:** Ruby\
**Created:** [October 5, 2010, 7:58pm UTC](https://www.ruby-forum.com/t/gem-mirror-yaml-file/196029 "2010-10-05T19:58:38Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![envex](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/bbe5ce/32.png) [@envex](https://www.ruby-forum.com/u/envex)\
**Post date:** [October 5, 2010, 7:58pm UTC](https://www.ruby-forum.com/t/gem-mirror-yaml-file/196029/1 "2010-10-05T19:58:38Z")

</div>

Hi everyone,

I’m trying to build a local gem mirror following this tutorial :

> **[Hardware | Oracle](https://www.oracle.com/it-infrastructure/)**
>
> Lower total cost of ownership with powerful on-premises Oracle hardware solutions that include unique Oracle Database optimizations and Oracle Cloud Infrastructure integrations.

I do not succeed building the index (gem generate\_index) (lake of  
virtual memory)

I have some questions :

Is the building of the index mandatory for creating a gem mirror?

When I try to add newly created local mirror to my gem env I’ve got an  
error.

gem source -a [http://192.168.0.15/](http://192.168.0.15/)

something like “gem is trying to get specs.4.8.gz, but this file doesn’t  
exists.”

I’ve tryed to download this file from [http://rubygems.org/specs.4.8.gz](http://rubygems.org/specs.4.8.gz)  
and then, put it on my server, but then, it’s failling on a missing  
“yaml” file.

What is the “specs.4.8.gz” and “yaml” files?

Another question : what is the Marshal.4.8 file on the root of the gem  
mirror?

---

<div class="post-metadata">

**Author:** ![envex](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/bbe5ce/32.png) [@envex](https://www.ruby-forum.com/u/envex)\
**Post date:** [October 5, 2010, 10:02pm UTC](https://www.ruby-forum.com/t/gem-mirror-yaml-file/196029/2 "2010-10-05T22:02:57Z")

</div>

Reply is in

gem help generate\_index

Sorry 🙂