Re: [Fab-user] (no subject)

[Brandon Whaley]

I've found that it's best not to set env.hosts in code but instead to define roles based on your config file and use the fab tool to specify a role.  Here's an example:

====

my_roles.json

====

{

    "web": [ "address@hidden", "address@hidden" ],

    "db": [ "address@hidden", "address@hidden" ]

}

====

fabfile.py

====

from fabric.api import env, run, task

import json

def load_roles():

    with open('my_roles.json') as f:

        env.roledefs = json.load(f)

load_roles()

@task

def my_task():

    run("hostname")

====

CLI

====

fab -R web my_task

# output from running "my_task" for each of web1 and web2 is here

On Mon, Jul 4, 2016 at 10:34 AM Ajay Jain <address@hidden> wrote:

I want a help regarding fabric. I have defined env.hosts in a function let say set_host() and I call set_hosts() function in my another function let say task() which have some run commands. So every time why it asks for host string when I run "fab task". but when I call "fab set_host task" it doesnt ask for host string. 

so how would I define my env.hosts so that it will not ask me for host string. I am giving hosts info from configuration file.

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