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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