Update installation docs

Created by: riyad

Requirements:

• reformatted/reordered
• add estimates for hard disk space
• add section for other Rubies

Database:

• clean up
• make both guides as similar as possible

Installation:

• fixed formatting
• add more explanations
• make warnings/important notes consistent
• remove unnecessary packages for building stuff, MySQL, PostgreSQL and Python (see 78d3611e for more details)
• update Ruby to 1.9.3-p327
• make sudo calls follow a consistent pattern
• only add gitlab user to git group
• fix Gitolite directory permissions
• remove duplication by referencing external documents (e.g. requirements or database config)

Please review this thoroughly. ;)

Created by: dzaporozhets

what about sudo usermod -a -G gitlab git?

By Administrator on 2012-12-07T16:33:33 (imported from GitLab project)

By Administrator on 2012-12-07T16:33:33 (imported from GitLab)

Created by: riyad

IMHO with https://github.com/gitlabhq/gitlabhq/pull/2188/files#L2R105 it isn't necessary any more. (there was a small discussion in https://github.com/gitlabhq/gitlabhq/issues/2165#issuecomment-11020827) The +s will make sure that newly created files/dirs get the same user:group as the parent (which is git:git). This should also solve the problems we had when mixing SSH and HTTP push.

By Administrator on 2012-12-07T16:33:33 (imported from GitLab project)

By Administrator on 2012-12-07T16:33:33 (imported from GitLab)

Created by: riyad

@randx Updated

Also added instructions for the Python 2 vs 3 mess

By Administrator on 2012-12-07T16:36:53 (imported from GitLab project)

By Administrator on 2012-12-07T16:36:53 (imported from GitLab)

Created by: dzaporozhets

@Riyad cool. Merged it

By Administrator on 2012-12-07T20:43:37 (imported from GitLab project)

By Administrator on 2012-12-07T20:43:37 (imported from GitLab)

Created by: ethanfu

my ubuntu hasn't addmod, 'sudo usermod -a -G gitlab git' is OK

By Administrator on 2012-12-09T12:47:12 (imported from GitLab project)

By Administrator on 2012-12-09T12:47:12 (imported from GitLab)