LDAP

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LDAP is a protocol optimized for fast access to records that are read much more often than they are changed. Records are stored in a hierarchy and consist of key-value pairs.

• An Introduction to LDAP
• Wikipedia article
• Safari - O'Reilly's LDAP System Administration

Things we could use LDAP for

Accounts

standard LDAP user account DB to replace /etc/passwd

Vhosts

standard mod_vhost_ldap records, possibly with extensions to correlate it with an account, with contact info, etc.

Packages

keep a list of all auto-installed packages, correlated with user accounts

Cron jobs

Mail scripts