Bugzilla – Bug 267966
ISC DHCP SERVER reads configuration from LDAP in chronological instead of logical order
Last modified: 2007-06-14 09:17:24 UTC
At start time of the isc dhcp server with ldap support, it builds a temporary text based configuration file. If in this file a host declaration follows after the subnet declaration the dhcp server crashes with the following error message: "Starting DHCP server - please wait for Server info! (60 s)Internet Systems Consortium DHCP Server V3.0.5 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ LDAP line 18: semicolon expected. ^ LDAP: cannot parse dhcpService entry 'cn=DHCP Config,ou=DHCP- Server,dc=iset,dc=hanau' Configuration file errors encountered – exiting“ This ever happens if i put a new host declaration into the ldap-dit. It did not happen if i first remove the subnet declaration, enter then the host declaration and rebuild finally the subnet declaration. I tested this on several machines with ldbm and bdb as ldap database backends. With SuSE Linux 10.0 everything works fine. Example LDIF files wurzel.ldif: dn: dc=iset,dc=hanau objectClass: dcObject objectClass: organization dc: iset o: ISET e.V. description: INFO-Server - LDAP structuralObjectClass: organization dn: uid=Admin,dc=iset,dc=hanau objectClass: top objectClass: account objectClass: simpleSecurityObject uid: Admin userPassword:: e1NTSEF9Uktkd1B3UEtubXc4WFlDaE1SZ2dYdVkrOElIR2VxU2k= description: Verzeichnis Administrator structuralObjectClass: account dn: ou=DHCP-Server,dc=iset,dc=hanau objectClass: organizationalUnit objectClass: top ou: DHCP-Server description: Basisknoten fuer den DHCP Server structuralObjectClass: organizationalUnit dhcp-options.ldif: #DHCP Server dn: cn=hanau-1dom0,ou=DHCP-Server,dc=iset,dc=hanau cn: hanau-1dom0 objectClass: top objectClass: dhcpServer dhcpServiceDN: cn=DHCP Config,ou=DHCP-Server,dc=iset,dc=hanau #DHCP-Konfigurationsknoten & globale DHCP Optionen dn: cn=DHCP Config,ou=DHCP-Server,dc=iset,dc=hanau cn: DHCP Config objectClass: top objectClass: dhcpService objectClass: dhcpOptions dhcpPrimaryDN: cn=hanau-1dom0,ou=DHCP-Server,dc=iset,dc=hanau dhcpStatements: ddns-update-style interim dhcpStatements: ignore client-updates dhcpStatements: include "/etc/named.keys" dhcpStatements: default-lease-time 36000 dhcpStatements: max-lease-time 864000 dhcpOption: domain-name "iset.hanau" dhcpOption: domain-name-servers 172.16.11.10 dhcpOption: broadcast-address 172.16.154.255 dhcpOption: netbios-name-servers 172.17.154.20 dhcpOption: netbios-node-type 8 dhcpOption: routers 172.16.154.253 dhcpOption: subnet-mask 255.255.255.0 dhcp-test.ldif: #Host Konfigurationen dn: cn=hanau-roland, cn=DHCP Config, ou=DHCP-Server,dc=iset,dc=hanau cn: hanau-roland objectClass: top objectClass: dhcpHost dhcpHWAddress: ethernet 00:60:97:af:31:25 dhcpStatements: fixed-address 172.16.154.100 # Dynamischer Bereich dn: cn=172.16.154.0, cn=DHCP Config, ou=DHCP-Server,dc=iset,dc=hanau cn: 172.16.154.0 objectClass: top objectClass: dhcpSubnet dhcpNetMask: 24 dhcpRange: 172.16.154.190 172.16.154.199 dhcpStatements: zone iset.hanau. { primary 172.16.11.10; key DHCP_UPDATER; } dhcpStatements: zone 154.16.172.in-addr.arpa. { primary 172.16.11.10; key DHCP_U PDATER; } If you put this three ldif files in your ldap everything works fine. If you put another host declaration into the last file after the subnet declaration the dhcp server crashes as described. dhcpd.conf: # DHCP Server Konfiguration fuer # FSP INVIS4 Backoffice Server # mit LDAP Anbindung ldap-server "localhost"; ldap-port 389; ldap-username "cn=Manager,dc=iset,dc=hanau"; ldap-password "secret"; ldap-base-dn "ou=DHCP-Server,dc=iset,dc=hanau"; ldap-method dynamic; ldap-debug-file "/var/log/dhcp-ldap-startup.log"; # Erstellt am 03.02.07 Regards Stefan
Stefan, can you try out please, if the problems still occurs with RPMs from: http://www.suse.de/~mt/dhcp/
I 've tested the new packages on 32bit and 64bit Installations and everything works without problems. Stefan
Thanks for retesting Stefan! The above RPMs contain also (ported) fixes for another important further bugs, that we found during our SLES10 SP1 developement & tests: Fri Apr 27 11:07:53 CEST 2007 - mt@suse.de - Bug #267966: Fixed ldap_read_function to avoid returning of an empty strings causing parsing errors in ldap-dynamic mode. New patch file: dhcp-3.0.5-ldap-patch-ldap_read.dif - Bug #265337: Fix to generate proper "host ... {" block begin brace even if no harware address is specified for the host. New patch file: dhcp-3.0.5-ldap-patch_host_brace.dif - Bug #250153: Fix for object order related parse error, that occured in case an dhcp-ldap object referencing a dhcp-class object was parsed before the declaration of the class. New patch file: dhcp-3.0.5-ldap-patch_object-order.dif - Bug #162186: Added check for EOF in parse_pool_statement to avoid endless recursion loop between parse_pool_statement and parse_statement when a closing right brace "}" is missed at the end of a pool declaration in /etc/dhcpd.conf. New patch file: dhcp-3.0.5-pool_eof.dif
Marius, SWAMPID is 9985
OK, fixed, patchinfo submitted and goes its way.
released together with 265337 250153 162186 for 10.2