[Fab-user] env.{hosts,exclude_hosts,roles} and some confusion
Hi,
I'm trying to run a task on the servers of a role minus some hosts specified on
the commandline, but I just cannot get it to remember -x...
Here's my code:
--
import os
import paraproxy
from fabric.api import env, run, puts
EXCLUDE_FILE = '~/.hosts_excluded'
env.roledefs = {
'mailin': [ 'host01', 'host02' ],
'mailout' : [ 'host03', 'host04' ],
}
env.roledefs['mail'] = env.roledefs['mailin']+env.roledefs['mailout']
def set_excludes(excludes=EXCLUDE_FILE):
with open(os.path.expanduser(excludes)) as fd:
env.exclude_hosts.extend([ host.strip() for host in fd.readlines() ])
puts(genrating hostlists...)
puts(Excludes from cli: %s % ', '.join(env.exclude_hosts))
set_excludes()
puts(Excludes cli/file: %s % ', '.join(env.exclude_hosts))
puts(... done)
def do_date():
run('date')
% /opt/python-2.7/bin/fab -f roles.py -R mail -x host01,host02 do_date
genrating hostlists...
Excludes from cli: host01, host02
Excludes cli/file: host01, host02, x204, x404, x203, x403, x25
... done
[host01] Executing task 'do_date'
[host01] run: date
[host01] out: Thu Aug 18 15:04:44 CEST 2011
[host01] out:
[host02] Executing task 'do_date'
[host02] run: date
[host02] out: Thu Aug 18 15:04:45 CEST 2011
[host02] out:
[host03] Executing task 'do_date'
[host03] run: date
[host03] out: Thu Aug 18 15:04:46 CEST 2011
[host03] out:
[host04] Executing task 'do_date'
[host04] run: date
[host04] out: Thu Aug 18 15:04:46 CEST 2011
[host04] out:
Done.
Doh, -x ignored...
even a simple
/opt/python-2.7/bin/fab -f roles.py -R mailin -x x601 do_date or
/opt/python-2.7/bin/fab -f roles.py -H x601 -x x601 do_date
do not exclude the host.
It seems I don't completely get how and when hosts, exclude_hosts and roles are
mixed to pass on to a task.
And yes, I have read the manual. Any other documentation I missed or can
somebody offer some explanations?
Thanks in advance,
Sven
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Re: [Fab-user] env.{hosts,exclude_hosts,roles} and some confusion
On Wed, Aug 24, 2011 at 5:04 AM, Sven Hergenhahn sve...@gmx.net wrote: And yes, I have read the manual. Any other documentation I missed or can somebody offer some explanations? When things don't work as expected, there's usually two causes: your misunderstanding (which you addressed by reading the docs) or a bug (which you probably forgot to look for ;)). This is a known bug, and I'll be fixing it soon hopefully as it's kind of crappy to have a new feature be mostly broken: https://github.com/fabric/fabric/issues/373 Best, Jeff -- Jeff Forcier Unix sysadmin; Python/Ruby engineer http://bitprophet.org ___ Fab-user mailing list Fab-user@nongnu.org https://lists.nongnu.org/mailman/listinfo/fab-user
[Fab-user] env.{hosts,exclude_hosts,roles} and some confusion
Hi,
I'm trying to run a task on the servers of a role minus some hosts specified on
the commandline, but I just cannot get it to remember -x...
Here's my code:
--
import os
import paraproxy
from fabric.api import env, run, puts
EXCLUDE_FILE = '~/.hosts_excluded'
env.roledefs = {
'mailin': [ 'x601', 'x602' ],
'mailout': [ 'x603', 'x604' ],
}
env.roledefs['mail'] = env.roledefs['mailin']+env.roledefs['mailout']
def set_excludes(excludes=EXCLUDE_FILE):
with open(os.path.expanduser(excludes)) as fd:
env.exclude_hosts.extend([ host.strip() for host in fd.readlines() ])
puts(genrating hostlists...)
puts(Excludes from cli: %s % ', '.join(env.exclude_hosts))
set_excludes()
puts(Excludes cli/file: %s % ', '.join(env.exclude_hosts))
puts(... done)
def do_date():
run('date')
% /opt/python-2.7/bin/fab -f roles.py -R mail -x x601,x602 do_date
genrating hostlists...
Excludes from cli: x601, x602
Excludes cli/file: x601, x602, x204, x404, x203, x403, x25
... done
[x601] Executing task 'do_date'
[x601] run: date
[x601] out: Thu Aug 18 15:04:44 CEST 2011
[x601] out:
[x602] Executing task 'do_date'
[x602] run: date
[x602] out: Thu Aug 18 15:04:45 CEST 2011
[x602] out:
[x603] Executing task 'do_date'
[x603] run: date
[x603] out: Thu Aug 18 15:04:46 CEST 2011
[x603] out:
[x604] Executing task 'do_date'
[x604] run: date
[x604] out: Thu Aug 18 15:04:46 CEST 2011
[x604] out:
Done.
Doh, -x ignored...
It seems I don't completely get how and when hosts, exclude_hosts and roles are
mixed to pass on to a task.
And yes, I have read the manual.
Thanks in advance,
Sven
--
Sven Hergenhahn
Heidelberg.Germany.Earth.
GPG Key 0x0DCE97AB Fingerprint E452 94A5 A426 1CA5 B321 5A71 D1AE 3696 0DCE
97AB
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