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Comment by cabacon | Hacker News Reader

I would love to see more details of the fabric+vagrant integration. For instance, you don't show how the prod/dev prefixes in your fabric commands are used to set the vagrant destination host, or the site urls. The vagrant way of things seems to be using "vagrant ssh". I know it sets up port forwarding to accomplish that, but how are you establishing the map of port# -> environment type? Just by convention, within the Vagrantfile?

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Good point. Here's the 'dev' task:

    def dev():
        '''Run on the development (i.e. Vagrant) server.'''
        env.env_name = 'development'
        env.site_name = 'MYSITE'
        env.process_name = 'gunicorn-MYSITE'
        env.process_owner = 'gunicorn'
        env.puppet_manifest = 'dev.pp'

        ssh_info = local('vagrant ssh_config', capture=True).splitlines()[1:]
        ssh_info = dict([l.strip().split(' ', 1) for l in ssh_info if l.strip()])

        env.key_filename = ssh_info['IdentityFile']
        env.hosts = ['%(User)s@%(HostName)s:%(Port)s' % ssh_info]

        env.site_path = '/var/www/MYSITE/MYSITE'
        env.venv_path = '/var/www/.virtualenvs/MYSITE'

        env.site_url = 'http://localhost:4565'

In a nutshell: it uses `vagrant ssh_config` to get the SSH info at runtime.

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