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Merged
kennethreitz merged 5 commits into from
Dec 31, 2011
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Add Additional Fabric Example #62

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64b15c5
Add additional task to Fabric example
Dec 30, 2011
d9439d5
Clean up Fabric example to not have horizontal scroll
Dec 30, 2011
73432c7
Fix missing dollar sign in fabric install
Dec 31, 2011
0b5a0ef
Switch examples to code-block style
Dec 31, 2011
da8e3e8
Remove unnecessary python code-block
Dec 31, 2011
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41 changes: 33 additions & 8 deletions docs/scenarios/admin.rst
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Expand Up @@ -10,31 +10,56 @@ fabric is more focused on application level tasks such as deployment.

Install Fabric:

::
.. code-block:: bash

pip install fabric
$ pip install fabric

The following code will ssh into both of our servers, cd to our project
directory, activate the virtual environment, pull the newest codebase,
and restart the application server.
The following code will create two tasks that we can use: ``memory_usage`` and
``deploy``. The former will output the memory usage on each machine. The
latter will ssh into each server, cd to our project directory, activate the
virtual environment, pull the newest codebase, and restart the application
server.

::

from fabric.api import cd, env, prefix, run, task

env.hosts = ['my_server1', 'my_server2']

@task
def memory_usage():
run('free -m')

@task
def deploy():
with cd('/var/www/project-env/project'):
with prefix('. ../bin/activate'):
run('git pull')
run('touch app.wsgi')

With the previous code saved in a file named fabfile.py, we merely need to run
the following command to deploy our application to both of our servers.
With the previous code saved in a file named fabfile.py, we can check memory
usage with:

::
.. code-block:: bash

$ fab memory_usage
[my_server1] Executing task 'memory'
[my_server1] run: free -m
[my_server1] out: total used free shared buffers cached
[my_server1] out: Mem: 6964 1897 5067 0 166 222
[my_server1] out: -/+ buffers/cache: 1509 5455
[my_server1] out: Swap: 0 0 0

[my_server2] Executing task 'memory'
[my_server2] run: free -m
[my_server2] out: total used free shared buffers cached
[my_server2] out: Mem: 1666 902 764 0 180 572
[my_server2] out: -/+ buffers/cache: 148 1517
[my_server2] out: Swap: 895 1 894

and we can deploy with:

.. code-block:: bash

$ fab deploy

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