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.
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# /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)
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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
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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.
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# 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
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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.
--
Best regards
Daniel Hoffend
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