>> Replace httpd.crt and httpd.key as per http://www.gluu.org/docs/admin-guide/certificates/#apache
You need to import httpd.crt into java keystore ( cacerts ). Steps were missing in doc, just updated.
- Convert httpd.crt to httpd.der, command: openssl x509 -outform der -in httpd.crt -out httpd.der
- Import this DER into java keystore (cacerts), command: keytool -importcert -file httpd.der -keystore cacerts -alias <hostname_of_your_Gluu_Server>
- restart LDAP server, apache2/httpd and tomcat.