Imported Upstream version 4.3.1
This commit is contained in:
Mario Fetka
566
install/tools/ipa-replica-conncheck
Executable file
566
install/tools/ipa-replica-conncheck
Executable file
@@ -0,0 +1,566 @@
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#! /usr/bin/python2 -E
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# Authors: Martin Kosek <mkosek@redhat.com>
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#
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# Copyright (C) 2011 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program 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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# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import print_function
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from ipapython.config import IPAOptionParser
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from ipapython import version
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from ipapython import ipautil, certdb
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from ipapython.ipautil import CalledProcessError
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from ipalib import api, errors, x509
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from ipaserver.install import installutils
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import ipaclient.ipachangeconf
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from optparse import OptionGroup, OptionValueError
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from ipapython.ipa_log_manager import *
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import sys
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import os
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import signal
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import tempfile
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import socket
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import time
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import threading
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import errno
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from socket import SOCK_STREAM, SOCK_DGRAM
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import distutils.spawn
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from ipaplatform.paths import paths
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import gssapi
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from nss import nss
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CONNECT_TIMEOUT = 5
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RESPONDERS = [ ]
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QUIET = False
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CCACHE_FILE = None
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KRB5_CONFIG = None
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class SshExec(object):
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def __init__(self, user, addr):
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self.user = user
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self.addr = addr
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self.cmd = distutils.spawn.find_executable('ssh')
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def __call__(self, command, verbose=False):
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# Bail if ssh is not installed
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if self.cmd is None:
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print("WARNING: ssh not installed, skipping ssh test")
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return ('', '', 0)
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tmpf = tempfile.NamedTemporaryFile()
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cmd = [
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self.cmd,
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'-o StrictHostKeychecking=no',
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'-o UserKnownHostsFile=%s' % tmpf.name,
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'-o GSSAPIAuthentication=yes',
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'%s@%s' % (self.user, self.addr), command
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]
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if verbose:
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cmd.insert(1, '-v')
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env = dict()
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if KRB5_CONFIG is not None:
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env['KRB5_CONFIG'] = KRB5_CONFIG
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elif 'KRB5_CONFIG' in os.environ:
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env['KRB5_CONFIG'] = os.environ['KRB5_CONFIG']
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if CCACHE_FILE is not None:
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env['KRB5CCNAME'] = CCACHE_FILE
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elif 'KRB5CCNAME' in os.environ:
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env['KRB5CCNAME'] = os.environ['KRB5CCNAME']
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return ipautil.run(cmd, env=env, raiseonerr=False,
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capture_output=True, capture_error=True)
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class CheckedPort(object):
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def __init__(self, port, port_type, description):
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self.port = port
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self.port_type = port_type
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self.description = description
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BASE_PORTS = [
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CheckedPort(389, SOCK_STREAM, "Directory Service: Unsecure port"),
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CheckedPort(636, SOCK_STREAM, "Directory Service: Secure port"),
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CheckedPort(88, SOCK_STREAM, "Kerberos KDC: TCP"),
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CheckedPort(88, SOCK_DGRAM, "Kerberos KDC: UDP"),
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CheckedPort(464, SOCK_STREAM, "Kerberos Kpasswd: TCP"),
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CheckedPort(464, SOCK_DGRAM, "Kerberos Kpasswd: UDP"),
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CheckedPort(80, SOCK_STREAM, "HTTP Server: Unsecure port"),
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CheckedPort(443, SOCK_STREAM, "HTTP Server: Secure port"),
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]
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def print_info(msg):
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if not QUIET:
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print(msg)
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def parse_options():
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def ca_cert_file_callback(option, opt, value, parser):
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if not os.path.exists(value):
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raise OptionValueError(
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"%s option '%s' does not exist" % (opt, value))
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if not os.path.isfile(value):
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raise OptionValueError(
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"%s option '%s' is not a file" % (opt, value))
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if not os.path.isabs(value):
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raise OptionValueError(
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"%s option '%s' is not an absolute file path" % (opt, value))
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initialized = nss.nss_is_initialized()
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try:
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x509.load_certificate_list_from_file(value)
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except Exception:
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raise OptionValueError(
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"%s option '%s' is not a valid certificate file" %
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(opt, value))
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finally:
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if not initialized:
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nss.nss_shutdown()
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parser.values.ca_cert_file = value
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parser = IPAOptionParser(version=version.VERSION)
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replica_group = OptionGroup(parser, "on-replica options")
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replica_group.add_option("-m", "--master", dest="master",
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help="Master address with running IPA for output connection check")
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replica_group.add_option("-a", "--auto-master-check", dest="auto_master_check",
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action="store_true",
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default=False,
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help="Automatically execute connection check on master")
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replica_group.add_option("-r", "--realm", dest="realm",
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help="Realm name")
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replica_group.add_option("-k", "--kdc", dest="kdc",
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help="Master KDC. Defaults to master address")
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replica_group.add_option("-p", "--principal", dest="principal",
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default=None, help="Principal to use to log in to remote master")
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replica_group.add_option("-w", "--password", dest="password", sensitive=True,
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help="Password for the principal"),
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replica_group.add_option("--ca-cert-file", dest="ca_cert_file",
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type="string", action="callback",
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callback=ca_cert_file_callback,
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help="load the CA certificate from this file")
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parser.add_option_group(replica_group)
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master_group = OptionGroup(parser, "on-master options")
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master_group.add_option("-R", "--replica", dest="replica",
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help="Address of remote replica machine to check against")
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parser.add_option_group(master_group)
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common_group = OptionGroup(parser, "common options")
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common_group.add_option("-c", "--check-ca", dest="check_ca",
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action="store_true",
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default=False,
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help="Check also ports for Certificate Authority "
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"(for servers installed before IPA 3.1)")
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common_group.add_option("", "--hostname", dest="hostname",
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help="The hostname of this server (FQDN). "
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"By default a nodename from uname(2) is used.")
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parser.add_option_group(common_group)
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parser.add_option("-d", "--debug", dest="debug",
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action="store_true",
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default=False, help="Print debugging information")
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parser.add_option("-q", "--quiet", dest="quiet",
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action="store_true",
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default=False, help="Output only errors")
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options, args = parser.parse_args()
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safe_options = parser.get_safe_opts(options)
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if options.master and options.replica:
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parser.error("on-master and on-replica options are mutually exclusive!")
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if options.master:
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if options.auto_master_check and not options.realm:
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parser.error("Realm is parameter is required to connect to remote master!")
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if not os.getegid() == 0:
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parser.error("You can only run on-replica part as root.")
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if options.master and not options.kdc:
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options.kdc = options.master
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if not options.master and not options.replica:
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parser.error("No action: you should select either --replica or --master option.")
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if not options.hostname:
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options.hostname = socket.getfqdn()
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if options.quiet:
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global QUIET
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QUIET = True
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return safe_options, options
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def logging_setup(options):
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log_file = None
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if os.getegid() == 0:
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log_file = paths.IPAREPLICA_CONNCHECK_LOG
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standard_logging_setup(log_file, debug=options.debug)
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def clean_responders(responders):
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if not responders:
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return
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for responder in responders:
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responder.stop()
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for responder in responders:
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responder.join()
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responders.remove(responder)
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def sigterm_handler(signum, frame):
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# do what SIGINT does (raise a KeyboardInterrupt)
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sigint_handler = signal.getsignal(signal.SIGINT)
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if callable(sigint_handler):
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sigint_handler(signum, frame)
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def configure_krb5_conf(realm, kdc, filename):
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krbconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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krbconf.setOptionAssignment((" = ", " "))
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krbconf.setSectionNameDelimiters(("[","]"))
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krbconf.setSubSectionDelimiters(("{","}"))
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krbconf.setIndent((""," "," "))
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opts = [{'name':'comment', 'type':'comment', 'value':'File created by ipa-replica-conncheck'},
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{'name':'empty', 'type':'empty'}]
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#[libdefaults]
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libdefaults = [{'name':'default_realm', 'type':'option', 'value':realm}]
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libdefaults.append({'name':'dns_lookup_realm', 'type':'option', 'value':'false'})
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libdefaults.append({'name':'dns_lookup_kdc', 'type':'option', 'value':'true'})
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libdefaults.append({'name':'rdns', 'type':'option', 'value':'false'})
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libdefaults.append({'name':'ticket_lifetime', 'type':'option', 'value':'24h'})
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libdefaults.append({'name':'forwardable', 'type':'option', 'value':'true'})
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libdefaults.append({'name':'udp_preference_limit', 'type':'option', 'value':'0'})
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opts.append({'name':'libdefaults', 'type':'section', 'value': libdefaults})
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opts.append({'name':'empty', 'type':'empty'})
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#the following are necessary only if DNS discovery does not work
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#[realms]
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realms_info =[{'name':'kdc', 'type':'option', 'value':ipautil.format_netloc(kdc, 88)},
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{'name':'master_kdc', 'type':'option', 'value':ipautil.format_netloc(kdc, 88)},
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{'name':'admin_server', 'type':'option', 'value':ipautil.format_netloc(kdc, 749)}]
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realms = [{'name':realm, 'type':'subsection', 'value':realms_info}]
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opts.append({'name':'realms', 'type':'section', 'value':realms})
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opts.append({'name':'empty', 'type':'empty'})
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#[appdefaults]
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pamopts = [{'name':'debug', 'type':'option', 'value':'false'},
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{'name':'ticket_lifetime', 'type':'option', 'value':'36000'},
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{'name':'renew_lifetime', 'type':'option', 'value':'36000'},
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{'name':'forwardable', 'type':'option', 'value':'true'},
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{'name':'krb4_convert', 'type':'option', 'value':'false'}]
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appopts = [{'name':'pam', 'type':'subsection', 'value':pamopts}]
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opts.append({'name':'appdefaults', 'type':'section', 'value':appopts})
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root_logger.debug("Writing temporary Kerberos configuration to %s:\n%s"
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% (filename, krbconf.dump(opts)))
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krbconf.newConf(filename, opts)
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class PortResponder(threading.Thread):
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def __init__(self, port, port_type, socket_timeout=1):
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super(PortResponder, self).__init__()
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self.port = port
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self.port_type = port_type
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self.socket_timeout = socket_timeout
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self._stop_request = False
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def run(self):
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while not self._stop_request:
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try:
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ipautil.bind_port_responder(self.port,
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self.port_type,
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socket_timeout=self.socket_timeout,
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responder_data="FreeIPA")
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except socket.timeout:
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pass
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except socket.error as e:
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if e.errno == errno.EADDRINUSE:
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time.sleep(1)
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else:
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raise
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def stop(self):
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self._stop_request = True
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def port_check(host, port_list):
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ports_failed = []
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ports_udp_warning = [] # conncheck could not verify that port is open
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for port in port_list:
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try:
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port_open = ipautil.host_port_open(host, port.port,
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port.port_type, socket_timeout=CONNECT_TIMEOUT)
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except socket.gaierror:
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raise RuntimeError("Port check failed! Unable to resolve host name '%s'" % host)
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if port_open:
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result = "OK"
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else:
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if port.port_type == socket.SOCK_DGRAM:
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ports_udp_warning.append(port)
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result = "WARNING"
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else:
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ports_failed.append(port)
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result = "FAILED"
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print_info(" %s (%d): %s" % (port.description, port.port, result))
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if ports_udp_warning:
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print("The following UDP ports could not be verified as open: %s" \
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% ", ".join(str(port.port) for port in ports_udp_warning))
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print("This can happen if they are already bound to an application")
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print("and ipa-replica-conncheck cannot attach own UDP responder.")
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if ports_failed:
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msg_ports = []
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for port in ports_failed:
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port_type_text = "TCP" if port.port_type == SOCK_STREAM else "UDP"
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msg_ports.append('%d (%s)' % (port.port, port_type_text))
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raise RuntimeError("Port check failed! Inaccessible port(s): %s" \
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% ", ".join(msg_ports))
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def main():
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safe_options, options = parse_options()
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logging_setup(options)
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root_logger.debug('%s was invoked with options: %s' % (sys.argv[0], safe_options))
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root_logger.debug("missing options might be asked for interactively later\n")
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||||
root_logger.debug('IPA version %s' % version.VENDOR_VERSION)
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||||
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||||
signal.signal(signal.SIGTERM, sigterm_handler)
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required_ports = BASE_PORTS
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if options.check_ca:
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# Check old Dogtag CA replication port
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# New installs with unified databases use main DS port (checked above)
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required_ports.append(CheckedPort(7389, SOCK_STREAM,
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"PKI-CA: Directory Service port"))
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|
||||
if options.replica:
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print_info("Check connection from master to remote replica '%s':" % options.replica)
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||||
port_check(options.replica, required_ports)
|
||||
print_info("\nConnection from master to replica is OK.")
|
||||
|
||||
# kinit to foreign master
|
||||
if options.master:
|
||||
# check ports on master first
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print_info("Check connection from replica to remote master '%s':" % options.master)
|
||||
tcp_ports = [ port for port in required_ports if port.port_type == SOCK_STREAM ]
|
||||
udp_ports = [ port for port in required_ports if port.port_type == SOCK_DGRAM ]
|
||||
port_check(options.master, tcp_ports)
|
||||
|
||||
if udp_ports:
|
||||
print_info("\nThe following list of ports use UDP protocol and would need to be")
|
||||
print_info("checked manually:")
|
||||
for port in udp_ports:
|
||||
result = "SKIPPED"
|
||||
print_info(" %s (%d): %s" % (port.description, port.port, result))
|
||||
|
||||
print_info("\nConnection from replica to master is OK.")
|
||||
|
||||
# create listeners
|
||||
global RESPONDERS
|
||||
print_info("Start listening on required ports for remote master check")
|
||||
|
||||
for port in required_ports:
|
||||
root_logger.debug("Start listening on port %d (%s)" % (port.port, port.description))
|
||||
responder = PortResponder(port.port, port.port_type)
|
||||
responder.start()
|
||||
RESPONDERS.append(responder)
|
||||
|
||||
remote_check_opts = ['--replica %s' % options.hostname]
|
||||
|
||||
if options.auto_master_check:
|
||||
print_info("Get credentials to log in to remote master")
|
||||
cred = None
|
||||
if options.principal is None:
|
||||
# Check if ccache is available
|
||||
try:
|
||||
root_logger.debug('KRB5CCNAME set to %s' %
|
||||
os.environ.get('KRB5CCNAME', None))
|
||||
# get default creds, will raise if none found
|
||||
cred = gssapi.creds.Credentials()
|
||||
principal = str(cred.name)
|
||||
except gssapi.raw.misc.GSSError as e:
|
||||
root_logger.debug('Failed to find default ccache: %s' % e)
|
||||
# Use admin as the default principal
|
||||
principal = "admin"
|
||||
else:
|
||||
principal = options.principal
|
||||
|
||||
if cred is None:
|
||||
(krb_fd, krb_name) = tempfile.mkstemp()
|
||||
os.close(krb_fd)
|
||||
configure_krb5_conf(options.realm, options.kdc, krb_name)
|
||||
global KRB5_CONFIG
|
||||
KRB5_CONFIG = krb_name
|
||||
(ccache_fd, ccache_name) = tempfile.mkstemp()
|
||||
os.close(ccache_fd)
|
||||
global CCACHE_FILE
|
||||
CCACHE_FILE = ccache_name
|
||||
|
||||
if principal.find('@') == -1:
|
||||
principal = '%s@%s' % (principal, options.realm)
|
||||
|
||||
if options.password:
|
||||
password=options.password
|
||||
else:
|
||||
password = installutils.read_password(principal, confirm=False,
|
||||
validate=False, retry=False)
|
||||
if password is None:
|
||||
sys.exit("Principal password required")
|
||||
|
||||
|
||||
result = ipautil.run([paths.KINIT, principal],
|
||||
env={'KRB5_CONFIG':KRB5_CONFIG, 'KRB5CCNAME':CCACHE_FILE},
|
||||
stdin=password, raiseonerr=False, capture_error=True)
|
||||
if result.returncode != 0:
|
||||
raise RuntimeError("Cannot acquire Kerberos ticket: %s" %
|
||||
result.error_output)
|
||||
|
||||
# Verify kinit was actually successful
|
||||
result = ipautil.run([paths.BIN_KVNO,
|
||||
'host/%s' % options.master],
|
||||
env={'KRB5_CONFIG':KRB5_CONFIG, 'KRB5CCNAME':CCACHE_FILE},
|
||||
raiseonerr=False, capture_error=True)
|
||||
if result.returncode != 0:
|
||||
raise RuntimeError("Could not get ticket for master server: %s" %
|
||||
result.error_output)
|
||||
|
||||
try:
|
||||
print_info("Check RPC connection to remote master")
|
||||
|
||||
xmlrpc_uri = ('https://%s/ipa/xml' %
|
||||
ipautil.format_netloc(options.master))
|
||||
api.bootstrap(context='client', xmlrpc_uri=xmlrpc_uri)
|
||||
api.finalize()
|
||||
|
||||
if options.ca_cert_file:
|
||||
nss_dir = None
|
||||
else:
|
||||
nss_dir = paths.IPA_NSSDB_DIR
|
||||
|
||||
with certdb.NSSDatabase(nss_dir) as nss_db:
|
||||
if options.ca_cert_file:
|
||||
nss_dir = nss_db.secdir
|
||||
|
||||
password = ipautil.ipa_generate_password()
|
||||
password_file = ipautil.write_tmp_file(password)
|
||||
nss_db.create_db(password_file.name)
|
||||
|
||||
ca_certs = x509.load_certificate_list_from_file(
|
||||
options.ca_cert_file, dbdir=nss_db.secdir)
|
||||
for ca_cert in ca_certs:
|
||||
nss_db.add_cert(
|
||||
ca_cert.der_data, str(ca_cert.subject), 'C,,')
|
||||
del ca_cert
|
||||
del ca_certs
|
||||
else:
|
||||
nss_dir = None
|
||||
|
||||
try:
|
||||
api.Backend.rpcclient.connect(nss_dir=nss_dir)
|
||||
api.Command.ping()
|
||||
except Exception as e:
|
||||
print_info(
|
||||
"Could not connect to the remote host: %s" % e)
|
||||
raise
|
||||
|
||||
print_info("Execute check on remote master")
|
||||
try:
|
||||
result = api.Backend.rpcclient.forward(
|
||||
'server_conncheck',
|
||||
ipautil.fsdecode(options.master),
|
||||
ipautil.fsdecode(options.hostname),
|
||||
version=u'2.162',
|
||||
)
|
||||
except (errors.CommandError, errors.NetworkError) as e:
|
||||
print_info(
|
||||
"Remote master does not support check over RPC: "
|
||||
"%s" % e)
|
||||
raise
|
||||
except errors.PublicError as e:
|
||||
returncode = 1
|
||||
stderr = e
|
||||
else:
|
||||
for message in result['messages']:
|
||||
print_info(message['message'])
|
||||
returncode = int(not result['result'])
|
||||
stderr = ("ipa-replica-conncheck returned non-zero "
|
||||
"exit code")
|
||||
finally:
|
||||
if api.Backend.rpcclient.isconnected():
|
||||
api.Backend.rpcclient.disconnect()
|
||||
except Exception:
|
||||
print_info("Retrying using SSH...")
|
||||
|
||||
user = principal.partition('@')[0]
|
||||
ssh = SshExec(user, options.master)
|
||||
|
||||
print_info("Check SSH connection to remote master")
|
||||
result = ssh('echo OK', verbose=True)
|
||||
if result.returncode != 0:
|
||||
print('Could not SSH into remote host. Error output:')
|
||||
for line in result.error_output.splitlines():
|
||||
print(' %s' % line)
|
||||
raise RuntimeError('Could not SSH to remote host.')
|
||||
|
||||
print_info("Execute check on remote master")
|
||||
result = ssh(
|
||||
"/usr/sbin/ipa-replica-conncheck " +
|
||||
" ".join(remote_check_opts))
|
||||
returncode = result.returncode
|
||||
stderr = result.error_output
|
||||
print_info(result.output)
|
||||
if returncode != 0:
|
||||
raise RuntimeError("Remote master check failed with following error message(s):\n%s" % stderr)
|
||||
else:
|
||||
# wait until user test is ready
|
||||
print_info("Listeners are started. Use CTRL+C to terminate the listening part after the test.")
|
||||
print_info("")
|
||||
print_info("Please run the following command on remote master:")
|
||||
|
||||
print_info("/usr/sbin/ipa-replica-conncheck " + " ".join(remote_check_opts))
|
||||
time.sleep(3600)
|
||||
print_info("Connection check timeout: terminating listening program")
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
sys.exit(main())
|
||||
except SystemExit as e:
|
||||
sys.exit(e)
|
||||
except KeyboardInterrupt:
|
||||
print_info("\nCleaning up...")
|
||||
sys.exit(1)
|
||||
except RuntimeError as e:
|
||||
sys.exit(e)
|
||||
finally:
|
||||
clean_responders(RESPONDERS)
|
||||
for file_name in (CCACHE_FILE, KRB5_CONFIG):
|
||||
if file_name:
|
||||
try:
|
||||
os.remove(file_name)
|
||||
except OSError:
|
||||
pass
|
||||
Reference in New Issue
Block a user