293 lines
13 KiB
Python
293 lines
13 KiB
Python
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
|
|
#
|
|
# This file is part of Ansible
|
|
#
|
|
# Ansible 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.
|
|
#
|
|
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
from __future__ import (absolute_import, division, print_function)
|
|
__metaclass__ = type
|
|
|
|
########################################################
|
|
import datetime
|
|
import os
|
|
import platform
|
|
import random
|
|
import shutil
|
|
import socket
|
|
import sys
|
|
import time
|
|
|
|
from ansible.cli import CLI
|
|
from ansible.errors import AnsibleOptionsError
|
|
from ansible.module_utils._text import to_native
|
|
from ansible.plugins import module_loader
|
|
from ansible.utils.cmd_functions import run_cmd
|
|
|
|
try:
|
|
from __main__ import display
|
|
except ImportError:
|
|
from ansible.utils.display import Display
|
|
display = Display()
|
|
|
|
|
|
########################################################
|
|
|
|
class PullCLI(CLI):
|
|
''' is used to up a remote copy of ansible on each managed node,
|
|
each set to run via cron and update playbook source via a source repository.
|
|
This inverts the default *push* architecture of ansible into a *pull* architecture,
|
|
which has near-limitless scaling potential.
|
|
|
|
The setup playbook can be tuned to change the cron frequency, logging locations, and parameters to ansible-pull.
|
|
This is useful both for extreme scale-out as well as periodic remediation.
|
|
Usage of the 'fetch' module to retrieve logs from ansible-pull runs would be an
|
|
excellent way to gather and analyze remote logs from ansible-pull.
|
|
'''
|
|
|
|
DEFAULT_REPO_TYPE = 'git'
|
|
DEFAULT_PLAYBOOK = 'local.yml'
|
|
PLAYBOOK_ERRORS = {
|
|
1: 'File does not exist',
|
|
2: 'File is not readable',
|
|
}
|
|
SUPPORTED_REPO_MODULES = ['git']
|
|
ARGUMENTS = {'playbook.yml': 'The name of one the YAML format files to run as an Ansible playbook.'
|
|
'This can be a relative path within the checkout. By default, Ansible will'
|
|
"look for a playbook based on the host's fully-qualified domain name,"
|
|
'on the host hostname and finally a playbook named *local.yml*.', }
|
|
|
|
def parse(self):
|
|
''' create an options parser for bin/ansible '''
|
|
|
|
self.parser = CLI.base_parser(
|
|
usage='%prog -U <repository> [options] [<playbook.yml>]',
|
|
connect_opts=True,
|
|
vault_opts=True,
|
|
runtask_opts=True,
|
|
subset_opts=True,
|
|
inventory_opts=True,
|
|
module_opts=True,
|
|
runas_prompt_opts=True,
|
|
desc="pulls playbooks from a VCS repo and executes them for the local host",
|
|
)
|
|
|
|
# options unique to pull
|
|
self.parser.add_option('--purge', default=False, action='store_true', help='purge checkout after playbook run')
|
|
self.parser.add_option('-o', '--only-if-changed', dest='ifchanged', default=False, action='store_true',
|
|
help='only run the playbook if the repository has been updated')
|
|
self.parser.add_option('-s', '--sleep', dest='sleep', default=None,
|
|
help='sleep for random interval (between 0 and n number of seconds) before starting. '
|
|
'This is a useful way to disperse git requests')
|
|
self.parser.add_option('-f', '--force', dest='force', default=False, action='store_true',
|
|
help='run the playbook even if the repository could not be updated')
|
|
self.parser.add_option('-d', '--directory', dest='dest', default=None, help='directory to checkout repository to')
|
|
self.parser.add_option('-U', '--url', dest='url', default=None, help='URL of the playbook repository')
|
|
self.parser.add_option('--full', dest='fullclone', action='store_true', help='Do a full clone, instead of a shallow one.')
|
|
self.parser.add_option('-C', '--checkout', dest='checkout',
|
|
help='branch/tag/commit to checkout. Defaults to behavior of repository module.')
|
|
self.parser.add_option('--accept-host-key', default=False, dest='accept_host_key', action='store_true',
|
|
help='adds the hostkey for the repo url if not already added')
|
|
self.parser.add_option('-m', '--module-name', dest='module_name', default=self.DEFAULT_REPO_TYPE,
|
|
help='Repository module name, which ansible will use to check out the repo. Default is %s.' % self.DEFAULT_REPO_TYPE)
|
|
self.parser.add_option('--verify-commit', dest='verify', default=False, action='store_true',
|
|
help='verify GPG signature of checked out commit, if it fails abort running the playbook. '
|
|
'This needs the corresponding VCS module to support such an operation')
|
|
self.parser.add_option('--clean', dest='clean', default=False, action='store_true',
|
|
help='modified files in the working repository will be discarded')
|
|
self.parser.add_option('--track-subs', dest='tracksubs', default=False, action='store_true',
|
|
help='submodules will track the latest changes. This is equivalent to specifying the --remote flag to git submodule update')
|
|
|
|
# for pull we don't want a default
|
|
self.parser.set_defaults(inventory=None)
|
|
|
|
super(PullCLI, self).parse()
|
|
|
|
if not self.options.dest:
|
|
hostname = socket.getfqdn()
|
|
# use a hostname dependent directory, in case of $HOME on nfs
|
|
self.options.dest = os.path.join('~/.ansible/pull', hostname)
|
|
self.options.dest = os.path.expandvars(os.path.expanduser(self.options.dest))
|
|
|
|
if self.options.sleep:
|
|
try:
|
|
secs = random.randint(0, int(self.options.sleep))
|
|
self.options.sleep = secs
|
|
except ValueError:
|
|
raise AnsibleOptionsError("%s is not a number." % self.options.sleep)
|
|
|
|
if not self.options.url:
|
|
raise AnsibleOptionsError("URL for repository not specified, use -h for help")
|
|
|
|
if self.options.module_name not in self.SUPPORTED_REPO_MODULES:
|
|
raise AnsibleOptionsError("Unsupported repo module %s, choices are %s" % (self.options.module_name, ','.join(self.SUPPORTED_REPO_MODULES)))
|
|
|
|
display.verbosity = self.options.verbosity
|
|
self.validate_conflicts(vault_opts=True)
|
|
|
|
def run(self):
|
|
''' use Runner lib to do SSH things '''
|
|
|
|
super(PullCLI, self).run()
|
|
|
|
# log command line
|
|
now = datetime.datetime.now()
|
|
display.display(now.strftime("Starting Ansible Pull at %F %T"))
|
|
display.display(' '.join(sys.argv))
|
|
|
|
# Build Checkout command
|
|
# Now construct the ansible command
|
|
node = platform.node()
|
|
host = socket.getfqdn()
|
|
limit_opts = 'localhost,%s,127.0.0.1' % ','.join(set([host, node, host.split('.')[0], node.split('.')[0]]))
|
|
base_opts = '-c local '
|
|
if self.options.verbosity > 0:
|
|
base_opts += ' -%s' % ''.join(["v" for x in range(0, self.options.verbosity)])
|
|
|
|
# Attempt to use the inventory passed in as an argument
|
|
# It might not yet have been downloaded so use localhost as default
|
|
inv_opts = ''
|
|
if getattr(self.options, 'inventory'):
|
|
for inv in self.options.inventory:
|
|
if isinstance(inv, list):
|
|
inv_opts += " -i '%s' " % ','.join(inv)
|
|
elif ',' in inv or os.path.exists(inv):
|
|
inv_opts += ' -i %s ' % inv
|
|
else:
|
|
inv_opts = "-i 'localhost,'"
|
|
|
|
# FIXME: enable more repo modules hg/svn?
|
|
if self.options.module_name == 'git':
|
|
repo_opts = "name=%s dest=%s" % (self.options.url, self.options.dest)
|
|
if self.options.checkout:
|
|
repo_opts += ' version=%s' % self.options.checkout
|
|
|
|
if self.options.accept_host_key:
|
|
repo_opts += ' accept_hostkey=yes'
|
|
|
|
if self.options.private_key_file:
|
|
repo_opts += ' key_file=%s' % self.options.private_key_file
|
|
|
|
if self.options.verify:
|
|
repo_opts += ' verify_commit=yes'
|
|
|
|
if self.options.clean:
|
|
repo_opts += ' force=yes'
|
|
|
|
if self.options.tracksubs:
|
|
repo_opts += ' track_submodules=yes'
|
|
|
|
if not self.options.fullclone:
|
|
repo_opts += ' depth=1'
|
|
|
|
path = module_loader.find_plugin(self.options.module_name)
|
|
if path is None:
|
|
raise AnsibleOptionsError(("module '%s' not found.\n" % self.options.module_name))
|
|
|
|
bin_path = os.path.dirname(os.path.abspath(sys.argv[0]))
|
|
# hardcode local and inventory/host as this is just meant to fetch the repo
|
|
cmd = '%s/ansible %s %s -m %s -a "%s" all -l "%s"' % (bin_path, inv_opts, base_opts, self.options.module_name, repo_opts, limit_opts)
|
|
|
|
for ev in self.options.extra_vars:
|
|
cmd += ' -e "%s"' % ev
|
|
|
|
# Nap?
|
|
if self.options.sleep:
|
|
display.display("Sleeping for %d seconds..." % self.options.sleep)
|
|
time.sleep(self.options.sleep)
|
|
|
|
# RUN the Checkout command
|
|
display.debug("running ansible with VCS module to checkout repo")
|
|
display.vvvv('EXEC: %s' % cmd)
|
|
rc, out, err = run_cmd(cmd, live=True)
|
|
|
|
if rc != 0:
|
|
if self.options.force:
|
|
display.warning("Unable to update repository. Continuing with (forced) run of playbook.")
|
|
else:
|
|
return rc
|
|
elif self.options.ifchanged and '"changed": true' not in out:
|
|
display.display("Repository has not changed, quitting.")
|
|
return 0
|
|
|
|
playbook = self.select_playbook(self.options.dest)
|
|
if playbook is None:
|
|
raise AnsibleOptionsError("Could not find a playbook to run.")
|
|
|
|
# Build playbook command
|
|
cmd = '%s/ansible-playbook %s %s' % (bin_path, base_opts, playbook)
|
|
if self.options.vault_password_file:
|
|
cmd += " --vault-password-file=%s" % self.options.vault_password_file
|
|
if inv_opts:
|
|
cmd += ' %s' % inv_opts
|
|
for ev in self.options.extra_vars:
|
|
cmd += ' -e "%s"' % ev
|
|
if self.options.ask_sudo_pass or self.options.ask_su_pass or self.options.become_ask_pass:
|
|
cmd += ' --ask-become-pass'
|
|
if self.options.skip_tags:
|
|
cmd += ' --skip-tags "%s"' % to_native(u','.join(self.options.skip_tags))
|
|
if self.options.tags:
|
|
cmd += ' -t "%s"' % to_native(u','.join(self.options.tags))
|
|
if self.options.subset:
|
|
cmd += ' -l "%s"' % self.options.subset
|
|
else:
|
|
cmd += ' -l "%s"' % limit_opts
|
|
|
|
os.chdir(self.options.dest)
|
|
|
|
# RUN THE PLAYBOOK COMMAND
|
|
display.debug("running ansible-playbook to do actual work")
|
|
display.debug('EXEC: %s' % cmd)
|
|
rc, out, err = run_cmd(cmd, live=True)
|
|
|
|
if self.options.purge:
|
|
os.chdir('/')
|
|
try:
|
|
shutil.rmtree(self.options.dest)
|
|
except Exception as e:
|
|
display.error("Failed to remove %s: %s" % (self.options.dest, str(e)))
|
|
|
|
return rc
|
|
|
|
def try_playbook(self, path):
|
|
if not os.path.exists(path):
|
|
return 1
|
|
if not os.access(path, os.R_OK):
|
|
return 2
|
|
return 0
|
|
|
|
def select_playbook(self, path):
|
|
playbook = None
|
|
if len(self.args) > 0 and self.args[0] is not None:
|
|
playbook = os.path.join(path, self.args[0])
|
|
rc = self.try_playbook(playbook)
|
|
if rc != 0:
|
|
display.warning("%s: %s" % (playbook, self.PLAYBOOK_ERRORS[rc]))
|
|
return None
|
|
return playbook
|
|
else:
|
|
fqdn = socket.getfqdn()
|
|
hostpb = os.path.join(path, fqdn + '.yml')
|
|
shorthostpb = os.path.join(path, fqdn.split('.')[0] + '.yml')
|
|
localpb = os.path.join(path, self.DEFAULT_PLAYBOOK)
|
|
errors = []
|
|
for pb in [hostpb, shorthostpb, localpb]:
|
|
rc = self.try_playbook(pb)
|
|
if rc == 0:
|
|
playbook = pb
|
|
break
|
|
else:
|
|
errors.append("%s: %s" % (pb, self.PLAYBOOK_ERRORS[rc]))
|
|
if playbook is None:
|
|
display.warning("\n".join(errors))
|
|
return playbook
|