I recently upgraded OpenLDAP 2.4.26 to 2.4.28. When I did that, a separate server running apache 2.2 and php 5 started to hang every 10-15 minutes. It freezes to the point that it no longer accepts requests.
This apache server is using a wildcard cert for https and uses php5-ldap which depends on libgnutls26 and libldap2.4-2. I am currently investigating further, but was wondering if the changes to MozNSS or GNUTls in 2.4.27 (ITS #7051, 6980, 6998, 7001, 7002, 7022, 7034 & 7006) may be interfering with apache. I don't think OpenLDAP is the cause, I am leaning towards an apache/php configuration error but the problem only occurs when I use 2.4.28. OpenLDAP 2.4.26 operates normally and is stable across the board. Any ideas?
ldapsearch -H ldaps://ldap.my.com works fine, no errors with connecting or searching.