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Full Discussion: Getting apache to see a LDAP group membership change
Top Forums Web Development Getting apache to see a LDAP group membership change Post 302962321 by maraixadm on Friday 11th of December 2015 06:31:02 PM
Old 12-11-2015
Getting apache to see a LDAP group membership change
trying to implement authz to a webpage using require ldap-group. It works, except I need to do apachectl restart before the server will observe an add or a delete to the group.

Seems like apache is acquiring the group membership at startup & caching it.

It's a static group.

I have apache 2.2 on AIX and TDS LDAP.

We want to automate group member adds/deletes, which implies that we need to automate refreshing the server's knowledge of the group. Possible solutions I've wondered about:
  • using dynamic groups (membership would be evaluated on every authz rather than the principal/user being compared against a cached list). This may be conceptually correct but is not an option given our schema.
  • doing something fugly like require ldap-attribute is-member-yatta-blah. I should be able to use require ldap-group.
  • driving a apachectl refresh out of the add/delete automation. I'd do it with ssh to a public-key-protected login on the servers running apache, as long as that doesn't make our security heads hurl.
  • something in HTML that tells the server to refresh its cached image of group contents ?

ideas appreciated
 

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LEARN ABOUT FREEBSD

slapo-dyngroup

SLAPO-DYNGROUP(5)						File Formats Manual						 SLAPO-DYNGROUP(5)

NAME

       slapo-dyngroup - Dynamic Group overlay to slapd

SYNOPSIS

       /etc/ldap/slapd.conf

DESCRIPTION

       The  Dynamic  Group overlay allows clients to use LDAP Compare operations to test the membership of a dynamic group the same way they would
       check against a static group. Compare operations targeting a group's static member attribute will be intercepted  and  tested  against  the
       configured dynamic group's URL attribute.

       Note  that  this  intercept only happens if the actual Compare operation does not return a LDAP_COMPARE_TRUE result. So if a group has both
       static and dynamic members, the static member list will be checked first.

CONFIGURATION

       This slapd.conf option applies to the Dynamic Group overlay.  It should appear after the overlay directive.

       attrpair <memberAttr> <URLattr>
	      Specify the attributes to be compared. A compare operation on the memberAttr will cause the URLattr to be evaluated for the result.

EXAMPLES

	 database bdb
	 ...
	 overlay dyngroup
	 attrpair member memberURL

FILES

       /etc/ldap/slapd.conf
	      default slapd configuration file

SEE ALSO

       slapd.conf(5), slapd-config(5).

AUTHOR

       Howard Chu

OpenLDAP							    2012/04/23							 SLAPO-DYNGROUP(5)
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