freeipa/ipaserver/install/upgradeinstance.py
Rob Crittenden 7940270b9f Remove root autobind search restriction, fix upgrade logging & error handling.
There was no point in limiting autobind root to just search cn=config since
it could always just modify its way out of the box, so remove the
restriction.

The upgrade log wasn't being created. Clearing all other loggers before
we calling logging.basicConfig() fixes this.

Add a global exception when performing updates so we can gracefully catch
and log problems without leaving the server in a bad state.

https://fedorahosted.org/freeipa/ticket/1243
https://fedorahosted.org/freeipa/ticket/1254
2011-06-13 09:51:05 +02:00

133 lines
4.7 KiB
Python

# Authors: Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2010 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import shutil
import random
import logging
from ipaserver.install import installutils
from ipaserver.install import dsinstance
from ipaserver.install import ldapupdate
from ipaserver.install import service
DSBASE = '/etc/dirsrv/slapd-'
DSE = 'dse.ldif'
class IPAUpgrade(service.Service):
"""
Update the LDAP data in an instance by turning off all network
listeners and updating over ldapi. This way we know the server is
quiet.
"""
def __init__(self, realm_name, files=[], live_run=True):
"""
realm_name: kerberos realm name, used to determine DS instance dir
files: list of update files to process. If none use UPDATEDIR
live_run: boolean that defines if we are in test or live mode.
"""
ext = ''
rand = random.Random()
for i in range(8):
h = "%02x" % rand.randint(0,255)
ext += h
service.Service.__init__(self, "dirsrv")
serverid = dsinstance.realm_to_serverid(realm_name)
self.filename = '%s%s/%s' % (DSBASE, serverid, DSE)
self.savefilename = '%s%s/%s.ipa.%s' % (DSBASE, serverid, DSE, ext)
self.live_run = live_run
self.files = files
self.modified = False
self.badsyntax = False
self.upgradefailed = False
def create_instance(self):
self.step("stopping directory server", self.stop)
self.step("saving configuration", self.__save_config)
self.step("disabling listeners", self.__disable_listeners)
self.step("starting directory server", self.start)
self.step("upgrading server", self.__upgrade)
self.step("stopping directory server", self.stop)
self.step("restoring configuration", self.__restore_config)
self.step("starting directory server", self.start)
self.start_creation("Upgrading IPA:")
def __save_config(self):
shutil.copy2(self.filename, self.savefilename)
port = installutils.get_directive(self.filename, 'nsslapd-port',
separator=':')
security = installutils.get_directive(self.filename, 'nsslapd-security',
separator=':')
self.backup_state('nsslapd-port', port)
self.backup_state('nsslapd-security', security)
def __restore_config(self):
port = self.restore_state('nsslapd-port')
security = self.restore_state('nsslapd-security')
installutils.set_directive(self.filename, 'nsslapd-port',
port, quotes=False, separator=':')
installutils.set_directive(self.filename, 'nsslapd-security',
security, quotes=False, separator=':')
def __disable_listeners(self):
installutils.set_directive(self.filename, 'nsslapd-port',
0, quotes=False, separator=':')
installutils.set_directive(self.filename, 'nsslapd-security',
'off', quotes=False, separator=':')
installutils.set_directive(self.filename, 'nsslapd-ldapientrysearchbase',
None, quotes=False, separator=':')
def __upgrade(self):
try:
ld = ldapupdate.LDAPUpdate(dm_password='', ldapi=True, live_run=self.live_run)
if len(self.files) == 0:
self.files = ld.get_all_files(ldapupdate.UPDATES_DIR)
self.modified = ld.update(self.files)
except ldapupdate.BadSyntax:
self.modified = False
self.badsyntax = True
except Exception, e:
# Bad things happened, return gracefully
self.modified = False
self.upgradefailed = True
logging.error('Upgrade failed with %s' % str(e))
def main():
if os.getegid() != 0:
print "Must be root to set up server"
return 1
update = IPAUpgrade('EXAMPLE.COM')
update.create_instance()
return 0
try:
if __name__ == "__main__":
sys.exit(main())
except SystemExit, e:
sys.exit(e)
except KeyboardInterrupt, e:
sys.exit(1)