Re: [Fab-user] Dynamic hosts not supported by -H?

[Morgan Goose]

@Ryan, so can you give us some context? Your question would be quicker
to answer is you, showed what you have (simplest code snippet), what
it's doing (output from the run), and what you expected.

-goose

On Thu, Jul 12, 2012 at 2:00 PM, Brown, Rodrick <address@hidden> wrote:
> My response was to the OP was asking how to load a dynamic list of hosts
> into fabric.
>
> The no magic solution is to treat Fab scripts like Python scripts, env.hosts
> is just looking for a list so you can easily populate env.hosts with normal
> python code that reads data from a file and stores the result set in a list.
>
>
>
> From: Ryan Bales [mailto:address@hidden
> Sent: Thursday, July 12, 2012 4:37 PM
> To: Brown, Rodrick
> Cc: fab-user
> Subject: Re: [Fab-user] Dynamic hosts not supported by -H?
>
>
>
> Well there _is_ some magic to it, though, isn't there?  Fabric handles
> execution as specified on the command-line, executing the right methods for
> the right hosts and such.  That's why you call fab, and not python, right?
>
>
>
> ~R
>
>
>
> On Thu, Jul 12, 2012 at 3:15 PM, Brown, Rodrick <address@hidden> wrote:
>
> Fabric is just python there is no magic to it.
>
>
>
> $ cat >fabfile1.py
>
> import fabric
>
> from fabric.api import run, env
>
> import os
>
>
>
> hostlist = '/tmp/hostlist'
>
> if (os.path.exists(hostlist)):
>
>     env.hosts = list(file(hostlist).readlines())[:-1]
>
>     print(env.hosts)
>
>
>
> def checkproc():
>
>     run('/bin/ps -elf |grep java')
>
>
>
> $ fab checkproc -f fabfile1.py
>
>
>
> From: address@hidden
> [mailto:address@hidden On Behalf Of Ryan
> Bales
> Sent: Thursday, July 12, 2012 9:27 AM
> To: fab-user
> Subject: [Fab-user] Dynamic hosts not supported by -H?
>
>
>
> Hello all,
>
>
>
> I'm trying to build a web app around a few fabric scripts, and I need to
> supply a dynamic list of hosts to the scripts.  I saw the -H switch, but it
> apparently only works when env.hosts is defined in the fabric script.  I
> also looked at command-line kwargs for methods, but the methods won't even
> be executed without env.hosts being defined.  Can someone point me in the
> right direction?
>
>
>
> Thanks,
> --
> Ryan Bales
> http://thinkt4nk.com/
> http://twitter.com/#!/thinkt4nk
> https://github.com/thinkt4nk
>
>
>
>
>
> --
> Ryan Bales
> http://thinkt4nk.com/
> http://twitter.com/#!/thinkt4nk
> https://github.com/thinkt4nk
>
>
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>
>
>
>
> --
> Ryan Bales
> http://thinkt4nk.com/
> http://twitter.com/#!/thinkt4nk
> https://github.com/thinkt4nk
>
>
> Please visit our website for important disclaimers/disclosures regarding
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>
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