cdist configuration management Latest manual: https://www.cdi.st/manual/latest/ Home page: https://www.cdi.st
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2012 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
def commandline():
"""Parse command line"""
import argparse
import cdist.banner
import cdist.config
import cdist.install
# Construct parser others can reuse
parser = {}
# Options _all_ parsers have in common
parser['loglevel'] = argparse.ArgumentParser(add_help=False)
parser['loglevel'].add_argument('-d', '--debug',
help='Set log level to debug', action='store_true',
default=False)
parser['loglevel'].add_argument('-v', '--verbose',
help='Set log level to info, be more verbose',
action='store_true', default=False)
# Main subcommand parser
parser['main'] = argparse.ArgumentParser(description='cdist ' + cdist.VERSION,
parents=[parser['loglevel']])
parser['main'].add_argument('-V', '--version',
help='Show version', action='version',
version='%(prog)s ' + cdist.VERSION)
parser['sub'] = parser['main'].add_subparsers(title="Commands")
# Banner
parser['banner'] = parser['sub'].add_parser('banner',
parents=[parser['loglevel']])
parser['banner'].set_defaults(func=cdist.banner.banner)
# Config and install (common stuff)
parser['configinstall'] = argparse.ArgumentParser(add_help=False)
parser['configinstall'].add_argument('host', nargs='+',
help='one or more hosts to operate on')
parser['configinstall'].add_argument('-c', '--cdist-home',
help='Change cdist home (default: .. from bin directory)',
action='store')
parser['configinstall'].add_argument('-i', '--initial-manifest',
help='Path to a cdist manifest or \'-\' to read from stdin.',
dest='manifest', required=False)
parser['configinstall'].add_argument('-p', '--parallel',
help='Operate on multiple hosts in parallel',
action='store_true', dest='parallel')
parser['configinstall'].add_argument('-s', '--sequential',
help='Operate on multiple hosts sequentially (default)',
action='store_false', dest='parallel')
parser['configinstall'].add_argument('--remote-copy',
help='Command to use for remote copy (should behave like scp)',
action='store', dest='remote_copy',
default="scp -o User=root -q")
parser['configinstall'].add_argument('--remote-exec',
help='Command to use for remote execution (should behave like ssh)',
action='store', dest='remote_exec',
default="ssh -o User=root -q")
# Config
parser['config'] = parser['sub'].add_parser('config',
parents=[parser['loglevel'], parser['configinstall']])
parser['config'].set_defaults(func=config)
# Install
# 20120525/sar: commented until it actually does something
#parser['install'] = parser['sub'].add_parser('install',
# parents=[parser['loglevel'], parser['configinstall']])
#parser['install'].set_defaults(func=install)
for p in parser:
parser[p].epilog = "Get cdist at http://www.nico.schottelius.org/software/cdist/"
args = parser['main'].parse_args(sys.argv[1:])
# Loglevels are handled globally in here and debug wins over verbose
if args.verbose:
logging.root.setLevel(logging.INFO)
if args.debug:
logging.root.setLevel(logging.DEBUG)
log.debug(args)
args.func(args)
def config(args):
configinstall(args, mode=cdist.config.Config)
def install(args):
configinstall(args, mode=cdist.install.Install)
def configinstall(args, mode):
"""Configure or install remote system"""
import multiprocessing
import time
initial_manifest_tempfile = None
if args.manifest == '-':
# read initial manifest from stdin
import tempfile
try:
handle, initial_manifest_temp_path = tempfile.mkstemp(prefix='cdist.stdin.')
with os.fdopen(handle, 'w') as fd:
fd.write(sys.stdin.read())
except (IOError, OSError) as e:
raise cdist.Error("Creating tempfile for stdin data failed: %s" % e)
args.manifest = initial_manifest_temp_path
import atexit
atexit.register(lambda: os.remove(initial_manifest_temp_path))
process = {}
failed_hosts = []
time_start = time.time()
for host in args.host:
if args.parallel:
log.debug("Creating child process for %s", host)
process[host] = multiprocessing.Process(target=configinstall_onehost, args=(host, args, mode, True))
process[host].start()
else:
try:
configinstall_onehost(host, args, mode, parallel=False)
except cdist.Error as e:
failed_hosts.append(host)
# Catch errors in parallel mode when joining
if args.parallel:
for host in process.keys():
log.debug("Joining process %s", host)
process[host].join()
if not process[host].exitcode == 0:
failed_hosts.append(host)
time_end = time.time()
log.info("Total processing time for %s host(s): %s", len(args.host),
(time_end - time_start))
if len(failed_hosts) > 0:
raise cdist.Error("Failed to deploy to the following hosts: " +
" ".join(failed_hosts))
def configinstall_onehost(host, args, mode, parallel):
"""Configure or install ONE remote system"""
try:
import cdist.context
context = cdist.context.Context(
target_host=host,
remote_copy=args.remote_copy,
remote_exec=args.remote_exec,
initial_manifest=args.manifest,
base_path=args.cdist_home,
exec_path=sys.argv[0],
debug=args.debug)
c = mode(context)
c.deploy_and_cleanup()
context.cleanup()
except cdist.Error as e:
# We are running in our own process here, need to sys.exit!
if parallel:
log.error(e)
sys.exit(1)
else:
raise
except KeyboardInterrupt:
# Ignore in parallel mode, we are existing anyway
if parallel:
sys.exit(0)
# Pass back to controlling code in sequential mode
else:
raise
def emulator():
"""Prepare and run emulator"""
import cdist.emulator
emulator = cdist.emulator.Emulator(sys.argv)
return emulator.run()
if __name__ == "__main__":
# Sys is needed for sys.exit()
import sys
cdistpythonversion = '3.2'
if sys.version < cdistpythonversion:
print('Cdist requires Python >= ' + cdistpythonversion +
' on the source host.', file=sys.stderr)
sys.exit(1)
exit_code = 0
try:
import logging
import os
import re
# Ensure our /lib/ is included into PYTHON_PATH
sys.path.insert(0, os.path.abspath(
os.path.join(os.path.dirname(os.path.realpath(__file__)), '../lib')))
# And now import our stuff
import cdist
log = logging.getLogger("cdist")
logging.basicConfig(format='%(levelname)s: %(message)s')
if re.match("__", os.path.basename(sys.argv[0])):
emulator()
else:
commandline()
except KeyboardInterrupt:
pass
except cdist.Error as e:
log.error(e)
exit_code = 1
# Determine exit code by return value of function
sys.exit(exit_code)