Proxy can answer but provides no data

[el-nino@gmx.li]

Hey there :-) 
 
I have some problems using OpenLDAP as proxy-cache. 
I have set up different LDAP-Servers on my laptop (SuSE 9.1, using the 
provided OL-RPM-packages v. 2.2.6), listening to different ports. One of 
them is set up as proxy. The corresponding slapd.conf looks this way: 
 
[...] 
backend         ldap 
database        ldap 
suffix          "dc=example2,dc=com" 
uri             ldap://localhost:60002/dc=example2,dc=com 
rootdn          "cn=Manager" 
overlay proxycache 
proxycache      bdb 100000 2 1000 1000 
proxyAttrset    0 uid loginShell uidNumber gidNumber homeDirectory 
shadowExpire cn 
proxyAttrset    1 uidNumber 
proxyTemplate   (uid=) 0 3600 
proxyTemplate   (uid=) 1 3600 
cachesize       200 
directory       /var/lib/ldap3 
[...] 
 
When submitting 
ldapsearch -x -b "dc=example2,dc=com" -LLL -h localhost:60003 
"uid=User40004" uidNumber 
I receive the desired results. Moreover, my logfile shows the following 
lines: 
 
Nov 29 21:18:07 linux slapd[2669]: QUERY NOT ANSWERABLE 
Nov 29 21:18:07 linux slapd[2669]: QUERY CACHEABLE 
Nov 29 21:18:07 linux slapd[2669]: [rw] searchBase: "dc=example2,dc=com" 
-> "dc=example2,dc=com" 
Nov 29 21:18:08 linux slapd[2669]: [rw] searchResult: 
"uid=User40004,ou=massuser,dc=example2,dc=com" -> "uid=User40004,ou=ma 
ssuser,dc=example2,dc=com" 
Nov 29 21:18:08 linux slapd[2669]: send_ldap_result: err=32 matched="" 
text="" 
Nov 29 21:18:08 linux slapd[2669]: UUID for query being added = 
877cbeae-d68f-1028-950b-8ab00c3da08a 
Nov 29 21:18:08 linux slapd[2669]: ==> bdb_add: 
uid=User40004,ou=massuser,dc=example2,dc=com 
 
Seems nice, at least I thought so. 
Submitting the same search again, I expected to have it answered by the 
ldap-proxy. In fact, the logfile shows 
 
Nov 29 21:36:35 linux slapd[2669]: QUERY ANSWERABLE 
Nov 29 21:36:35 linux slapd[2669]: bdb_idl_fetch_key: [b49d1940] 
Nov 29 21:36:35 linux slapd[2669]: <= bdb_equality_candidates: (uid) 
index_param failed (18) 
Nov 29 21:36:35 linux slapd[2669]: send_ldap_result: err=0 matched="" 
text="" 
Nov 29 21:36:35 linux slapd[2669]: connection_get(9) 
 
Seems nice again, but ldapsearch does not show any result and no 
error-message es well. 
Since it is the same when using a self-compiled OL-2.2.17 and the 
meta-backend, it seems to me that this may be a general problem or that 
simply, there is something absolutely obvious that I am still missing. 
 
Maybe, somebody can already help me ... of course I will provide more 
detailed logs if necessary. 
 
Thanks in advance 
 
Thilo 

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