Hello.
slapd keep dying more and more frequently recently, from dying once a
week in last month to current dying 3 to 5 times a day.
"/etc/init.d/slapd start" instantly recover it, for next a few hours.
Exactly the same web application that uses the ldap database had been
running as-is for about one year without this problem. Server machine
never changed/replaced/touched.
What we tried are (in that order):
1. Run a server monitor to make sure the server load is not high
(below 0.5) when slapd dies.
2. Upgrade to 2.4.11-1+lenny2 (on Debian)
3. slapcat the mostly used database (hdb) and slapadd them back in.
4. do the same for the other database (bdb);
5. track the log message at log level 256 (connection) and finding no
clue. For example, one time, the last word is:
Oct 25 16:06:59 www slapd[11969]: conn=26289 fd=29 ACCEPT from
IP=**.**.**.**:56539 (IP=0.0.0.0:389)
Oct 25 16:06:59 www slapd[11969]: conn=26289 op=0 BIND
dn="cn=admin,dc=*******" method=128
Oct 25 16:06:59 www slapd[11969]: conn=26289 op=0 BIND
dn="cn=admin,dc=*******" mech=SIMPLE ssf=0
Oct 25 16:06:59 www slapd[11969]: conn=26289 op=0 RESULT tag=97 err=0
text=
Oct 25 16:06:59 www slapd[11969]: conn=26288 op=8 UNBIND
Oct 25 16:06:59 www slapd[11969]: conn=26288 fd=41 closed
Oct 25 16:06:59 www slapd[11969]: conn=26289 op=1 UNBIND
Oct 25 16:06:59 www slapd[11969]: conn=26289 fd=29 closed
Another time it is:
Oct 25 16:27:09 www slapd[25691]: conn=2750 fd=51 ACCEPT from
IP=**.**.**.**:54846 (IP=0.0.0.0:389)
Oct 25 16:27:09 www slapd[25691]: conn=2750 op=1 SRCH
base="ou=contacts,ou=china,dc=*******" scope=2 deref=0
filter="(uidNumber=7762)"
Oct 25 16:27:10 www slapd[25691]: conn=2750 op=1 SRCH attr=o mail
telephonenumber contactperson c st l street postalcode postofficebox
facsimiletelephonenumber labeleduri businesscategory description pnglogo
changetime lastrecapdate objectclass category
6. Track the log message at log level 4 (heavy trace debugging) and
finding no clue. For example, one time, the last word is:
Oct 25 22:23:48 www slapd[723]: connection_get(50)
Oct 25 22:23:48 www slapd[723]: SRCH "ou=contacts,ou=china,dc=*******" 2 0
Oct 25 22:23:48 www slapd[723]: 0 0 0
Oct 25 22:23:48 www slapd[723]: filter: (uidNumber=2)
Oct 25 22:23:48 www slapd[723]: attrs:
Oct 25 22:23:49 www slapd[723]:
Oct 25 22:23:49 www slapd[723]: connection_get(56)
Oct 25 22:23:49 www slapd[723]: SRCH "ou=contacts,ou=china,dc=*******" 2 0
Oct 25 22:23:49 www slapd[723]: 0 0 0
Oct 25 22:23:49 www slapd[723]: filter: (uidNumber=2)
Help, hints and suggestion of specific RTFM highly appreciated. Offering
*paid* help to remote login to solve this problem is highly appreciated
as well (please send me and my colleague on the 'cc' an email about the
quotes). The problem exhausted us all.
Thanks in advance!
Zhang Weiwu
