There's two editions of GitLab: [Enterprise Edition](https://www.gitlab.com/features/)(EE) and [Community Edition](http://gitlab.org/gitlab-ce/)(CE). GitLab CE is delivered via git from the [gitlabhq repository](https://github.com/gitlabhq/gitlabhq/). New versions of GitLab are released in stable branches and the master branch is for bleeding edge development. EE releases are available not long after CE releases. To obtain the GitLab EE there is a [repository at gitlab.com](https://gitlab.com/subscribers/gitlab-ee). A new version of CE is delivered every month on the 22nd of the month. For this reason it is recommended to follow a monthly upgrade schedule because usually one can't skip versions when upgrading but must upgrade incrementally. Security updates come out on an informal basis.
There's two editions of GitLab: [Enterprise Edition](https://www.gitlab.com/features/)(EE) and [Community Edition](http://gitlab.org/gitlab-ce/)(CE). GitLab CE is delivered via git from the [gitlabhq repository](https://gitlab.com/gitlab-org/gitlab-ce/tree/master). New versions of GitLab are released in stable branches and the master branch is for bleeding edge development. EE releases are available not long after CE releases. To obtain the GitLab EE there is a [repository at gitlab.com](https://gitlab.com/subscribers/gitlab-ee). A new version of CE is delivered every month on the 22nd of the month. For this reason it is recommended to follow a monthly upgrade schedule because usually one can't skip versions when upgrading but must upgrade incrementally. Security updates come out on an informal basis.
Both EE and CE require an add-on component called gitlab-shell. It is obtained from the [gitlab-shell repository](https://github.com/gitlabhq/gitlab-shell). New versions are usually tags but staying on the master branch will give you the latest stable version. New releases are generally around the same time as GitLab CE releases with exception for informal security updates deemed critical.
Both EE and CE require an add-on component called gitlab-shell. It is obtained from the [gitlab-shell repository](https://gitlab.com/gitlab-org/gitlab-shell/tree/master). New versions are usually tags but staying on the master branch will give you the latest stable version. New releases are generally around the same time as GitLab CE releases with exception for informal security updates deemed critical.
# System Layout
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A typical install of GitLab will be on RHEL or Ubuntu Linux. It uses Apache or nginx as a web front end to proxypass the Unicorn web server. Communication between Unicorn and the front end is usually HTTP but access via socket is also supported. The web front end accesses `~git/gitlab/public` bypassing the Unicorn server to serve static pages, attachments, and other resources the GitLab core creates (such as uploaded avatars or archives). GitLab serves web pages and a [GitLab API](https://github.com/gitlabhq/gitlabhq/tree/master/doc/api) using the Unicorn web server. It uses Sidekiq as a job queue which, in turn, uses redis as a non-persistent database backend for job information, meta data, and incomming jobs. The GitLab web app uses MySQL or PostgreSQL for persistent database information (e.g. users, permissions, issues, other meta data). GitLab stores the bare git repositories it serves in `~git/repositories` by default. It also keeps default branch and hook information with the bare repository. GitLab maintains a checked out version of each repository in `~git/gitlab-satellites`. The satellite repository is used by the web interface for editing repositories and the wiki which is also a git repository. When serving repositories over HTTP/HTTPS GitLab utilizes the GitLab API to resolve authorization and access as well as serving git objects.
A typical install of GitLab will be on RHEL or Ubuntu Linux. It uses Apache or nginx as a web front end to proxypass the Unicorn web server. Communication between Unicorn and the front end is usually HTTP but access via socket is also supported. The web front end accesses `~git/gitlab/public` bypassing the Unicorn server to serve static pages, attachments, and other resources the GitLab core creates (such as uploaded avatars or archives). GitLab serves web pages and a [GitLab API](https://gitlab.com/gitlab-org/gitlab-ce/tree/master/doc/api) using the Unicorn web server. It uses Sidekiq as a job queue which, in turn, uses redis as a non-persistent database backend for job information, meta data, and incomming jobs. The GitLab web app uses MySQL or PostgreSQL for persistent database information (e.g. users, permissions, issues, other meta data). GitLab stores the bare git repositories it serves in `~git/repositories` by default. It also keeps default branch and hook information with the bare repository. GitLab maintains a checked out version of each repository in `~git/gitlab-satellites`. The satellite repository is used by the web interface for editing repositories and the wiki which is also a git repository. When serving repositories over HTTP/HTTPS GitLab utilizes the GitLab API to resolve authorization and access as well as serving git objects.
The add-on component gitlab-shell serves repositories over SSH. It manages the SSH keys within `~git/.ssh/authorized_keys` which should not be manually edited. gitlab-shell accesses the bare repositories directly to serve git objects and communicates with redis to submit jobs to Sidekiq for GitLab to process. gitlab-shell queries the GitLab API to determine authorization and access.
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@@ -122,7 +122,7 @@ gitlab-shell has a configuration file at `~git/gitlab-shell/config.yml`.
## Maintenance Tasks
[gitlabhq](https://github.com/gitlabhq/gitlabhq) provides rake tasks with which you see version information and run a quick check on your configuration to ensure it is configured properly within the application. See [maintenance rake tasks](https://github.com/gitlabhq/gitlabhq/blob/master/doc/raketasks/maintenance.md). In a nutshell, do the following:
[GitLab](https://gitlab.com/gitlab-org/gitlab-ce/tree/master) provides rake tasks with which you see version information and run a quick check on your configuration to ensure it is configured properly within the application. See [maintenance rake tasks](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/raketasks/maintenance.md). In a nutshell, do the following:
