[Fab-user] using execute fabric command does not work as expected

Jeff Forcier

2013-09-13 20:33:42 UTC

Please check the usage docs on the execution model - I think what you
want is to remove @roles from your function and instead give the inner
execute() calls 'role='staging'.

By putting @roles on stage() you're telling Fabric to run that task
once per host in the role's runlist - instead you want stage() itself
to just run one time "locally" and for the inner execute()s to handle
connecting per-subtask. Thus the role= kwarg to execute().

Hi,
I’m using Fabric 1.7, Python 2.7. This is part of my fabfile.py file
env.roledefs = {
"dev" : ["dev01 "],
"staging" : ["sta01 ", "sta02"],
"live" : ["live01", "live02"]
@roles("staging")
execute(create_package)
execute(copy_package)
execute(run_package)
execute(email_result)
When I call fab stage:appname, it runs the four functions first on sta01 and
then on sta02.
Sta01: create_package
Sta01: copy_package
Sta01: run_package
Sta01: email_result
Sta02: create_package
Sta02: copy_package
Sta02: run_package
Sta02: email_result
Expected result is executing each function on sta01 and sta02, and then
Sta01: create_package
Sta02: create_package
Sta01: copy_package
Sta02: copy_package
Sta01: run_package
Sta02: run_package
Sta01: email_result
Sta02: email_result
What is wrong with my script?
Regards,
Alex
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--
Jeff Forcier
Unix sysadmin; Python/Ruby engineer
http://bitprophet.org