Add ansible-pull
A first stab at a pull-based model for ansible. This does two things:
1. Invoke the git module via Runner to set up a git repository on the
localhost. It sets up Runner to use transport='local' and forces
the inventory to just 'localhost'.
2. Run any playbooks provided. By default, this wants to run the
playbook local.yml. This also sets transport='local' and sets
the host_list to a list: localhost, fqdn, and hostname.
The reason for setting the host_list and not using override_hosts is
because there may be plays in the playbook that are not meant for a
specific host. That is, if the git repository is for the entire site
and not host-specific, you don't want to override hosts and apply all
plays to any given host. This has the downside of potentially running a
play three times if the play is defined for 'hosts: all'.
This commit is contained in:
Stephen Fromm
parent
3803b27f6c
commit
672794f586
1 changed files with 147 additions and 0 deletions
147
bin/ansible-pull
Executable file
147
bin/ansible-pull
Executable file
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#!/usr/bin/env python
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# (c) 2012, Stephen Fromm <sfromm@gmail.com>
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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import os
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import sys
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import socket
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import logging
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import ansible.playbook
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import ansible.runner
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import ansible.constants as C
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from ansible import errors
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from ansible import callbacks
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from ansible import utils
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from ansible import inventory
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DEFAULT_PLAYBOOK = 'local.yml'
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def main(args):
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""" Set up and run a local playbook """
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usage = "%prog [options]"
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parser = utils.base_parser(constants=C, usage=usage,
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connect_opts=False, runas_opts=False)
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parser.set_defaults(module_name='git', transport='local',
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one_line=False, tree=None)
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parser.add_option('-d', '--directory', dest='dest', default=None,
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help='Directory to checkout git repository')
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parser.add_option('-U', '--url', dest='url', default=None,
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help='URL of git repository')
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parser.add_option('-C', '--checkout', dest='checkout', default="HEAD",
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help='Branch/Tag/Commit to checkout. Defaults to HEAD.')
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parser.remove_option('-k') # Remove ssh password option
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parser.remove_option('-K') # Remove sudo password option
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parser.remove_option('-T') # Remove ssh timeout option
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options, args = parser.parse_args(args)
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clirunner_cb = callbacks.CliRunnerCallbacks()
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clirunner_cb.options = options
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# ----------------------------------------------
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# First git clone/pull
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git_opts = "repo=%s dest=%s version=%s" % (options.url, options.dest, options.checkout)
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pattern = "localhost"
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inventory_manager = inventory.Inventory([pattern])
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"""
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Ideally, changes should be reported via logging and not to STDOUT
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"""
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runner = ansible.runner.Runner(
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module_name=options.module_name,
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module_args=git_opts,
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module_path=options.module_path,
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inventory=inventory_manager,
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forks=options.forks,
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pattern=pattern,
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callbacks=clirunner_cb,
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transport=options.transport,
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debug=options.debug
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)
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try:
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runner.run()
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except errors.AnsibleError, e:
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print >>sys.stderr, "ERROR: %s" % e
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return 1
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# ----------------------------------------------
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# Second, run the playbook
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"""
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Change to the directory where the git checkout is located.
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Insert 'local.yml' as the first playbook to be run. This
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supports multiple playbooks being supplied on the CLI, similar
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to ansible-playbook. This then loops on all the playbooks,
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instantiates and runs a playbook. A couple things of note:
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* The transport uses the default set above, local
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* The host_list argument to Playbook is set to a list of
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names. These are localhost, the fqdn, and hostname.
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This last point is problematic because it will run a playbook
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3 times if the playbook is for 'all' hosts. We do not necessarily
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want to override 'hosts' in the playbook because they may be generic
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across the entire infrastructure -- not host specific.
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Finally, this should use the logging module in some manner and
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not print data to STDOUT.
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"""
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if os.path.exists("%s/%s" % (options.dest, DEFAULT_PLAYBOOK)):
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args.insert(0, DEFAULT_PLAYBOOK)
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os.chdir(options.dest)
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hostname = socket.getfqdn()
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stats = callbacks.AggregateStats()
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playbook_cb = callbacks.PlaybookCallbacks()
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pbrunner_cb = callbacks.PlaybookRunnerCallbacks(stats)
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local_host = [pattern, hostname, hostname.split('.')[0]]
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for playbook in args:
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pb = ansible.playbook.PlayBook(
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playbook=playbook,
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host_list=local_host,
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module_path=options.module_path,
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debug=options.debug,
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runner_callbacks=pbrunner_cb,
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callbacks=playbook_cb,
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transport=options.transport,
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stats=stats
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)
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"""
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This just takes the reporting from ansible-playbook.
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Ideally, this should use logging to report success/failure/changes.
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"""
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try:
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pb.run()
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hosts = sorted(pb.stats.processed.keys())
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print "RECAP\n\n"
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for h in hosts:
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t = pb.stats.summarize(h)
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print "%-30s : ok=%4s changed=%4s unreachable=%4s failed=%4s " % (h,
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t['ok'], t['changed'], t['unreachable'], t['failures']
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)
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print "\n"
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except errors.AnsibleError, e:
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print >>sys.stderr, "ERROR: %s" % e
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return 1
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return 0
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if __name__ == '__main__':
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try:
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sys.exit(main(sys.argv[1:]))
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except errors.AnsibleError, e:
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print >>sys.stderr, "ERROR: %s" % e
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sys.exit(1)
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