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Re: High availability

Taymour A. El Erian skrev, on 20-08-2007 16:04:

Would you happen to have any documentation on how to implement chaining ?

If you've built from source (Buchan's srpm or whatever) and have a build directory from a successful build, go to $DIR/tests, run './run test032-chain'; when it's done, got to ./testrun and look at both slapd.?.conf; that should give you a basic idea, together with the rest there.

I always get this error

Could not locate slapd(8) 

What "always"?

When do you get this error? What are you doing at the time?

I checked the code and this happens because of the following check

if test ! -x /usr/sbin/.3 ; then


However, I broke my own chain slapd config file on the relevant (Samba) slave server and my shell scripts which I use for master updates etc. kept getting referral errors, even with the above configs. I spent "a good time" on this and finally got it working again with the following:

overlay chain
chain-uri               ldaps://ldap.master/
chain-idassert-bind     bindmethod=simple
                        binddn="cn=proxy,dc=school,dc=nl"
                        credentials=Wh4t3v3r
                        mode=self
                        flags=non-prescriptive

I was using digest-md5 SASL binding and ldap with starttls, which I always use for all replication etc., but that was what was breaking chaining - no idea why.

This is OL 2.3.37, BTW.

I'd seriously forget doing *anything whatever* (let alone "High availability") with OpenLDAP until you can get this little thing working.

Best,

--Tonni

--

Tony Earnshaw
Email: tonni at hetnet dot nl