[Samba] Samba LDAP caching when LDAP server unavailable - possible?

ANTHONY JOSEPH MESSINA amessina at messinet.com
Wed Jan 18 17:36:24 GMT 2006


could you set up a small instance of an ldap server along with samba on 
this small box and have it act like a bdc?  you could set up openldap to 
do syncrepl and have a full copy of your samba domain stuff that's in 
ldap.  if the connection goes down, the ldap stuff is there and if you 
have it set up like a bdc, you can still login, etc.

just a thought, i'm fairly new at all this stuff.

-anthony


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Tomasz Chmielewski wrote:
> I've been using Samba with OpenLDAP with great success on normal servers.
> 
> Recently however, it appeared to us that for remote locations it is more 
> economically viable to replace Samba servers with Samba running on 
> little routers like ASUS WL-500g with openwrt firmware/software.
> It has a broadcom/mipsel CPU, and thanks to openwrt 
> (http://openwrt.org), it is possible to run lots of software on it.
> 
> Pretty nice for small offices - small, no fan, no hard disk etc. other 
> moving parts (you can connect a USB stick to it if you want to store 
> files/profiles).
> 
> There is one glitch however - no OpenLDAP port.
> 
> So a Samba domain controller running on these tiny routers would have to 
> authenticate users users against an external OpenLDAP server (probably 
> in the company headquaters).
> 
> My experience shows that a company with several branches located 
> throughout the city/country/world have connectivity problems from time 
> to time (especiall when there is no IT staff in the branches).
> 
> With no local LDAP server this would mean users not able to work (as 
> they can't authenticate).
> 
> Is it possible to set up Samba to "cache" credentials retrieved from the 
> LDAP, and when LDAP is unavailable, to use these cached credentials?
> 
> 


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