119 lines
4.5 KiB
ReStructuredText
119 lines
4.5 KiB
ReStructuredText
Bootstrap
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=========
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This document describes the usual steps recommended for a new
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cdist setup. It is recommended that you have read and understood
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`cdist quickstart <cdist-quickstart.html>`_ before digging into this.
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Location
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---------
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First of all, you should think about where to store your configuration
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database and who will be accessing or changing it. Secondly you have to
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think about where to configure your hosts from, which may be a different
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location.
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For starters, having cdist (which includes the configuration database) on
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your notebook should be fine.
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Additionally an external copy of the git repository the configuration
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relies on is recommended, for use as backup as well as to allow easy collaboration
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with others.
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For more sophisticated setups developing cdist configurations with multiple
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people, have a look at `cdist best practice <cdist-best-practice.html>`_.
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Setup working directory and branch
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----------------------------------
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I assume you have a fresh copy of the cdist tree in ~/cdist, cloned from
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one of the official URLs (see `cdist quickstart <cdist-quickstart.html>`_ if you don't).
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Entering the command "git branch" should show you "* master", which indicates
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you are on the **master** branch.
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The master branch reflects the latest development of cdist. As this is the
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development branch, it may or may not work. There are also version branches
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available, which are kept in a stable state. Let's use **git branch -r**
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to list all branches::
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cdist% git branch -r
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origin/1.0
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origin/1.1
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origin/1.2
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origin/1.3
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origin/1.4
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origin/1.5
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origin/1.6
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origin/1.7
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origin/2.0
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origin/HEAD -> origin/master
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origin/archive_shell_function_approach
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origin/master
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So **2.0** is the latest version branch in this example.
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All versions (2.0.x) within one version branch (2.0) are compatible to each
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other and won't break your configuration when updating.
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It's up to you to decide which branch you want to base your own work on:
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master contains more recent changes, newer types, but may also break.
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The version branches are stable, but may lack the latest features.
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Your decision can be changed later on, but may result in merge conflicts,
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which you will need to solve.
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Let's assume you want latest stuff and select the master branch as base for
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your own work. Now it's time to create your branch, which contains your
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local changes. I usually name it by the company/area I am working for:
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ethz-systems, localch, customerX, ... But this is pretty much up to you.
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In this tutorial I use the branch **mycompany**::
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cdist% git checkout -b mycompany origin/master
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Branch mycompany set up to track remote branch master from origin.
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Switched to a new branch 'mycompany'
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cdist-user% git branch
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master
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* mycompany
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From now on, you can use git as usual to commit your changes in your own branch.
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Publishing the configuration
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----------------------------
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Usually a development machine like a notebook should be considered
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temporary only. For this reason and to enable shareability, the configuration
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should be published to another device as early as possible. The following
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example shows how to publish the configuration to another host that is
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reachable via ssh and has git installed::
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# Create bare git repository on the host named "loch"
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cdist% ssh loch "GIT_DIR=/home/nutzer/cdist git init"
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Initialized empty Git repository in /home/nutzer/cdist/
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# Add remote git repo to git config
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cdist% git remote add loch loch:/home/nutzer/cdist
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# Configure the mycompany branch to push to loch
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cdist% git config branch.mycompany.remote loch
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# Configure mycompany branch to push into remote master branch
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cdist% git config branch.mycompany.merge refs/heads/master
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# Push mycompany branch to remote branch master initially
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cdist% git push loch mycompany:refs/heads/master
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Now you have setup the git repository to synchronise the **mycompany**
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branch with the **master** branch on the host **loch**. Thus you can commit
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as usual in your branch and push out changes by entering **git push**.
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Updating from origin
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--------------------
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Whenever you want to update your cdist installation, you can use git to do so::
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# Update git repository with latest changes from origin
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cdist% git fetch origin
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# Update current branch with master branch from origin
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cdist% git merge origin/master
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# Alternative: Update current branch with 2.0 branch from origin
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cdist% git merge origin/2.0
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