Greetengs.
About two years ago I theoreticaly learned with docs and this forum, but had no practice at all. Now I have to resolv some problems with OpenLDAP in a rush, and, unforunatelly, I have no much time to search archives and documentation and make experimental works. So I will be very greatfull if you share your experience. URLs for FAQs and examples are welcome.
So. We have an e-mail MTA distributed system based on sendmail, courier imap, and OpenLDAP as user database and authentication backend. Our ex-sysadmin installed master LDAP and two slave OL-servers on relays, using SLURP technique. I beleive that it is not right choice, so I want to migrate replication scheme to better one. So some questions I have for now.
1. I know SLURP and LDAP sync techniques, is there another ones?
2. LDAP sync looks for me much better than SLURP. Is there any "compare chart" or "best practice" tips which helps to choose right way?
3. Is there any version restrictions for replications schemes? E.g. if I setup new OpenLDAP server have I install exactly same version as other LDAP servers?
4. Some days ago my master LDAP was dead for good, so I'd changed software configuration and now it uses one of my ex-slaves. It works fine but as a result I lost backup LDAP server -- now my slaves out of sync. I guess that the simplest way is setup another OpenLDAP, copy base and make it master ldap server using SLURP. But if sync scheme better than SLURP I prefer to setup LDAP sync scheme. So if I choose sync, I want to make my today's master 'provider' and stand-alone-today-ex-slave 'consumer'. Am I right?
5. Can I perform any setup steps but setup consumer to syncronize my LDAPs?