Hello
I'm setting up an openldap directory server (2.4.13) including a 2nd one for as backup/failover partner. After i compiled everything, installing, configuring everything (database, sync, schema, etc) and imported the basic LDAP Layout (ou=Users,ou=Groups, etc), I wanted to use this directory as Userdirectory for Userauthentication on ldap.
I was switching user/group lookups using the 'ldapclient' command and modified to /etc/nsswitch.conf to refer for "files ldap" for passwd and group.
Everything seems to work. 'genent passwd' and 'getent group' is listing my ldap user and groups. But when i try to restart the slapd server it crashes sometimes with a coredump.
---------------------------------------------------------------------- # /usr/local/libexec/slapd -d 65535 -u openldap -g openldap @(#) $OpenLDAP: slapd 2.4.13 (Jan 30 2009 12:02:48) $ root@ldapserver:/usr/local/src/openldap-2.4.13/servers/slapd ldap_pvt_gethostbyname_a: host=ldapserver, r=0 daemon_init: <null> daemon_init: listen on ldap:/// daemon_init: 1 listeners to open... ldap_url_parse_ext(ldap:///) daemon: listener initialized ldap:/// daemon_init: 2 listeners opened ldap_create Bus Error (core dumped) ----------------------------------------------------------------------
Not everytime, sometimes several times in a row, sometimes after a 2nd start. I've no clue what it could be.
In the ldap logfile, i found the 2 following lines
---------------------------------------------------------------------- an 30 16:26:56 ldapserver slapd[9494]: [ID 555073 local4.error] tid= 1: multiple threads per connection not supported Jan 30 16:26:56 ldapserver slapd[9494]: [ID 555073 local4.error] tid= 1: multiple threads per connection not supported ----------------------------------------------------------------------
I started to run the slapd server using "truss" to see when the server starts to coredump.
---------------------------------------------------------------------- # truss /usr/local/libexec/slapd -d 65535 -u openldap -g openldap [...] open("/etc/nsswitch.conf", O_RDONLY|O_LARGEFILE) = 9 fcntl(9, F_DUPFD, 0x00000100) Err#22 EINVAL read(9, " #\n # C o p y r i g h".., 1024) = 1024 read(9, " g u r e i t o u t ".., 1024) = 245 read(9, 0xFF092400, 1024) = 0 close(9) = 0 fstat(3, 0xFFBFCAE8) = 0 time() = 1233329411 getpid() = 9512 [9511] putmsg(3, 0xFFBFC1A0, 0xFFBFC194, 0) = 0 open("/var/run/syslog_door", O_RDONLY) = 9 door_info(9, 0xFFBFC0D8) = 0 getpid() = 9512 [9511] door_call(9, 0xFFBFC0C0) = 0 close(9) = 0 fstat(3, 0xFFBFCB88) = 0 time() = 1233329411 getpid() = 9512 [9511] putmsg(3, 0xFFBFC240, 0xFFBFC234, 0) = 0 open("/var/run/syslog_door", O_RDONLY) = 9 door_info(9, 0xFFBFC178) = 0 getpid() = 9512 [9511] door_call(9, 0xFFBFC160) = 0 close(9) = 0 Incurred fault #5, FLTACCESS %pc = 0x0008E1FC siginfo: SIGBUS BUS_ADRALN addr=0x00000191 Received signal #10, SIGBUS [default] siginfo: SIGBUS BUS_ADRALN addr=0x00000191 ----------------------------------------------------------------------
It looks like after reading nsswitch.conf, the server starts to crash. I changed the following lines in the nsswitch.conf and the server starts fine without any further problems. (even 20x in a row)
---------------------------------------------------------------------- Before: group files ldap After: group files ----------------------------------------------------------------------
Another thing is: If the server could startup without problems, it never crashed again. It's only sometimes during the initial startup.
I would be happy if anyone could help me or point me what i could adjust. If needed i could provide more information.