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https://salsa.debian.org/freeipa-team/freeipa.git
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2703be51c8
After looking into setting up ntpd on the IPA servers I decided it was better just to warn admins. There are just too many valid setups for time synchronization for us to try to get this right. Additionally, just installing ntp and accepting the default config will result in a configuration that is perfectly valid for IPA. This patch checks if ntpd is running and suggests enabling it if it is not - for client and server. It also adds some suggested next steps to the server installation.
219 lines
9.2 KiB
Python
219 lines
9.2 KiB
Python
#! /usr/bin/python -E
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# Authors: Simo Sorce <ssorce@redhat.com>
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# Karl MacMillan <kmacmillan@mentalrootkit.com>
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#
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# Copyright (C) 2007 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
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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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, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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VERSION = "%prog .1"
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import sys
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sys.path.append("/usr/share/ipa")
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import krbV
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import socket
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import logging
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from optparse import OptionParser
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import ipaclient.ipadiscovery
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import ipaclient.ipachangeconf
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from ipa.ipautil import run
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def parse_options():
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parser = OptionParser(version=VERSION)
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parser.add_option("--domain", dest="domain", help="domain name")
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parser.add_option("--server", dest="server", help="IPA server")
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parser.add_option("--realm", dest="realm_name", help="realm name")
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parser.add_option("-f", "--force", dest="force", action="store_true",
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default=False, help="force setting of ldap/kerberos conf")
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parser.add_option("-d", "--debug", dest="debug", action="store_true",
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default=False, help="print debugging information")
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parser.add_option("-U", "--unattended", dest="unattended",
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help="unattended installation never prompts the user")
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options, args = parser.parse_args()
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return options
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def logging_setup(options):
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# Always log everything (i.e., DEBUG) to the log
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# file.
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logging.basicConfig(level=logging.DEBUG,
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format='%(asctime)s %(levelname)s %(message)s',
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filename='ipaclient-install.log',
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filemode='w')
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console = logging.StreamHandler()
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# If the debug option is set, also log debug messages to the console
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if options.debug:
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console.setLevel(logging.DEBUG)
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else:
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# Otherwise, log critical and error messages
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console.setLevel(logging.ERROR)
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formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')
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console.setFormatter(formatter)
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logging.getLogger('').addHandler(console)
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def check_ntp():
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ret_code = 1
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p = subprocess.Popen(["/sbin/service", "ntpd", "status"], stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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return p.returncode
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def main():
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options = parse_options()
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logging_setup(options)
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dnsok = True
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# Create the discovery instance
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ds = ipaclient.ipadiscovery.IPADiscovery()
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ret = ds.search()
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if ret == -10:
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print "Can't get the fully qualified name of this host"
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print "Please check that the client is properly configured"
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return ret
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if ret == -1:
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logging.debug("Domain not found")
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if options.domain:
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dom = options.domain
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elif options.unattended:
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return ret
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else:
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print "Failed to determine your DNS domain (DNS misconfigured?)"
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dom = raw_input("Please provide your domain name (ex: example.com): ")
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ret = ds.search(domain=dom)
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if ret == -2:
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dnsok = False
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logging.debug("IPA Server not found")
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if options.server:
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srv = options.server
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elif options.unattended:
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return ret
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else:
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print "Failed to find the IPA Server (DNS misconfigured?)"
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srv = raw_input("Please provide your server name (ex: ipa.example.com): ")
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ret = ds.search(domain=dom, server=srv)
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if ret != 0:
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print "Failed to verify that "+srv+" is an IPA Server, aborting!"
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return ret
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if dnsok:
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print "Discovery was successful!"
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elif not options.unattended:
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print "\nThe failure to use DNS to find your IPA server indicates that your resolv.conf file is not properly configured\n."
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print "Autodiscovery of servers for failover cannot work with this configuration.\n"
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print "If you proceed with the installation, services will be configured to always access the discovered server for all operation and will not fail over to other servers in case of failure\n"
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yesno = raw_input("Do you want to proceed and configure the system with fixed values with no DNS discovery? [y/N] ")
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if yesno.lower() != "y":
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return ret
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print "\n"
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print "Realm: "+ds.getRealmName()
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print "DNS Domain: "+ds.getDomainName()
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print "IPA Server: "+ds.getServerName()
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print "BaseDN: "+ds.getBaseDN()
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# Configure ldap.conf
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ldapconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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ldapconf.setOptionAssignment(" ")
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opts = [{'name':'comment', 'type':'comment', 'value':'File modified by ipa-client-install'},
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{'name':'empty', 'type':'empty'},
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{'name':'nss_base_passwd', 'type':'option', 'value':ds.getBaseDN()+'?sub'},
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{'name':'nss_base_group', 'type':'option', 'value':ds.getBaseDN()+'?sub'},
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{'name':'base', 'type':'option', 'value':ds.getBaseDN()},
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{'name':'ldap_version', 'type':'option', 'value':'3'}]
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if not dnsok or options.force:
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opts.append({'name':'uri', 'type':'option', 'value':'ldap://'+ds.getServerName()})
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opts.append({'name':'empty', 'type':'empty'})
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ldapconf.newConf("/etc/ldap.conf", opts)
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#Check if kerberos is already configured properly
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krbctx = krbV.default_context()
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# If we find our domain assume we are properly configured
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#(ex. we are configuring the client side of a Master)
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if not krbctx.default_realm == ds.getRealmName() or options.force:
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#Configure krb5.conf
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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 modified by ipa-client-install'},
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{'name':'empty', 'type':'empty'}]
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#[libdefaults]
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libopts = [{'name':'default_realm', 'type':'option', 'value':ds.getRealmName()}]
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if dnsok and not options.force:
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libopts.append({'name':'dns_lookup_realm', 'type':'option', 'value':'true'})
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libopts.append({'name':'dns_lookup_kdc', 'type':'option', 'value':'true'})
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else:
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libopts.append({'name':'dns_lookup_realm', 'type':'option', 'value':'false'})
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libopts.append({'name':'dns_lookup_kdc', 'type':'option', 'value':'false'})
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libopts.append({'name':'ticket_lifetime', 'type':'option', 'value':'24h'})
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libopts.append({'name':'forwardable', 'type':'option', 'value':'yes'})
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opts.append({'name':'libdefaults', 'type':'section', 'value':libopts})
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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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if not dnsok or options.force:
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#[realms]
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kropts =[{'name':'kdc', 'type':'option', 'value':ds.getServerName()+':88'},
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{'name':'admin_server', 'type':'option', 'value':ds.getServerName()+':749'},
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{'name':'default_domain', 'type':'option', 'value':ds.getDomainName()}]
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ropts = [{'name':ds.getRealmName(), 'type':'subsection', 'value':kropts}]
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opts.append({'name':'realms', 'type':'section', 'value':ropts})
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opts.append({'name':'empty', 'type':'empty'})
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#[domain_realm]
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dropts = [{'name':'.'+ds.getDomainName(), 'type':'option', 'value':ds.getRealmName()},
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{'name':ds.getDomainName(), 'type':'option', 'value':ds.getRealmName()}]
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opts.append({'name':'domain_realm', 'type':'section', 'value':dropts})
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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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krbconf.newConf("/etc/krb5.conf", opts);
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#Modify nsswitch to add nss_ldap
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run(["/usr/sbin/authconfig", "--enableldap", "--update"])
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#Modify pam to add pam_krb5
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run(["/usr/sbin/authconfig", "--enablekrb5", "--update"])
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# print warning about ntp
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if check_ntp() != 0:
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print "WARNING: Kerberos requires time synchronization between clients"
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print "and servers for correct operation. You should consider enabling ntpd."
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return 0
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main()
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