ceph/doc/install/clone-source.rst

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=========================================
Cloning the Ceph Source Code Repository
=========================================
To clone a Ceph branch of the Ceph source code, go to `github Ceph
Repository`_, select a branch (``main`` by default), and click the **Download
ZIP** button.
.. _github Ceph Repository: https://github.com/ceph/ceph
To clone the entire git repository, :ref:`install <install-git>` and configure
``git``.
.. _install-git:
Install Git
===========
To install ``git`` on Debian/Ubuntu, run the following command:
.. prompt:: bash $
sudo apt-get install git
To install ``git`` on CentOS/RHEL, run the following command:
.. prompt:: bash $
sudo yum install git
You must have a ``github`` account. If you do not have a ``github``
account, go to `github.com`_ and register. Follow the directions for setting
up git at `Set Up Git`_.
.. _github.com: https://github.com
.. _Set Up Git: https://help.github.com/linux-set-up-git
Add SSH Keys (Optional)
=======================
To commit code to Ceph or to clone the respository by using SSH
(``git@github.com:ceph/ceph.git``), you must generate SSH keys for github.
.. tip:: If you want only to clone the repository, you can
use ``git clone --recursive https://github.com/ceph/ceph.git``
without generating SSH keys.
To generate SSH keys for ``github``, run the following command:
.. prompt:: bash $
ssh-keygen
To print the SSH key that you just generated and that you will add to your
``github`` account, use the ``cat`` command. (The following example assumes you
used the default file path.):
.. prompt:: bash $
cat .ssh/id_rsa.pub
Copy the public key.
Go to your ``github`` account, click "Account Settings" (represented by the
'tools' icon), and click "SSH Keys" on the left side navbar.
Click "Add SSH key" in the "SSH Keys" list, enter a name for the key, paste the
key you generated, and press the "Add key" button.
Clone the Source
================
To clone the Ceph source code repository, run the following command:
.. prompt:: bash $
git clone --recursive https://github.com/ceph/ceph.git
After ``git clone`` has run, you should have a full copy of the Ceph
repository.
.. tip:: Make sure you maintain the latest copies of the submodules included in
the repository. Running ``git status`` will tell you whether the submodules
are out of date. See :ref:`update-submodules` for more information.
.. prompt:: bash $
cd ceph
git status
.. _update-submodules:
Updating Submodules
-------------------
If your submodules are out of date, run the following commands:
.. prompt:: bash $
git submodule update --force --init --recursive --progress
git clean -fdx
git submodule foreach git clean -fdx
If you still have problems with a submodule directory, use ``rm -rf [directory
name]`` to remove the directory. Then run ``git submodule update --init
--recursive --progress`` again.
Choose a Branch
===============
Once you clone the source code and submodules, your Ceph repository
will be on the ``main`` branch by default, which is the unstable
development branch. You may choose other branches too.
- ``main``: The unstable development branch.
- ``stable-release-name``: The name of the stable, `Active Releases`_. e.g. ``Pacific``
- ``next``: The release candidate branch.
::
git checkout main
.. _Active Releases: https://docs.ceph.com/en/latest/releases/#active-releases