Making Servers Work
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Making Servers Work
This book highlights practical sysadmin skills, common architectures that you’ll encounter, and best practices that apply to automating and running systems at any scale, from one laptop or server to 1,000 or more. It is intended to help orient you within the discipline, and hopefully encourages you to learn more about system administration.
Creating the OpenLDAP server replica
Can you synchronize two LDAP directories? Replication is a mechanism allowing to copy data from one server to another automatically. After copying data from the server storing the main copy of data for servers storing other copies of this data, the mechanism of replication still synchronizes all copies on servers, i.e. changing data on the server with the right to save data results in the same changes in data copies on other servers. The micro-course describes the ways of synchronizing LDAP directories on the basis of the OpenLDAP server. The older model, realized by the slurpd server, and the newer way, done with the SyncRepl mechanism built in the server, are also shown here. Keywords: OpenLDAP, slurpd, SyncRepl, synchronization of directories Creating the OpenLDAP server replica Work types of the LDAP system Replication Work modes Basic configuration Configuration with referential servers Configuration with replication Updating in the slave server mode The syncrep synchronization The work of the server as proxy Configuration of replication Configuration of the slurpd server The SyncRepl system Configuration of the SyncRepl system