Hello,
We are currently integrating several apache instances with LDAP for
authentication, this works wonderfull for one exception and that is LDAP
failover. If the primary LDAP server is not available the failover/switch
towards the second entry in the config only happens after minutes.
Our testing platform runs Centos 5, and has the following versions/apps
installed: httpd-2.2.3-7, openldap-2.3.27-5, openssl-0.9.8b-8.3
It was tested with and without ssl (over 636/tcp) and starttls (via 389/tcp) and
plain (over 389/tcp) none of these performed a successfull/quick failover. The
end goal would be either ssl or starttls based ldap connectivity.
The preference would be to failover if there is no 3 way tcp handshake after 2
seconds or an query is not returned within 2 seconds.
We tried lowering the apache "timeout" option, and attempted .ldaprc and
environment variables voor openldap:
LDAPNETWORK_TIMEOUT="2"
LDAPTIMEOUT="2"
LDAPTLS_CACERTDIR="/etc/SSL/CA"
Any suggestions how to proceed?
Test Configuration failover ldap:
---------------------------------
# LDAP Test SJC
LDAPSharedCacheSize 200000
LDAPCacheEntries 1024
LDAPCacheTTL 600
LDAPOpCacheEntries 1024
LDAPOpCacheTTL 600
LDAPConnectionTimeout 2
LDAPTrustedGlobalCert CA_BASE64 /etc/httpd/SSL/CA.pem
LDAPVerifyServerCert on
<Location /ldap-status>
SetHandler ldap-status
Order deny,allow
Deny from all
Allow from 10.0.0.0/23
AuthName "LDAP Status"
AuthType Basic
AuthBasicProvider ldap
AuthzLDAPAuthoritative off
AuthLDAPURL "ldap://192.168.1.40
172.16.1.40/ou=People,ou=Users,o=Corp?cn?sub" STARTTLS
AuthLDAPBindDN "cn=Apache01,ou=ServiceAccounts,ou=Users,o=Corp"
AuthLDAPBindPassword "<<REMOVED>>"
Require valid-user
</Location>
# End of LDAP Test SJC
Thanks in advance,
Stijn
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