Re: (ITS#8507) adding the syncprov overlay does not load the associated schema elements

[ryan@nardis.ca]

On Thu, Sep 29, 2016 at 06:03:38PM +0000, elecharny@apache.org wrote:
>$ grep -ri "olcSpNoPresent" slapd.d
>$ ...
>
>You can stop and restart the server, the attribute is still not present.

It's system schema and not user schema, so I kind of expect this. The 
behaviour is the same when cn=config is initialized using slapadd -n0.

'ldapsearch -s base cn=schema,cn=config' does show these attributes.

>Going back to the slapd.conf file, add the module :
>
>...
># Uncomment the mululeloads as needed to enable additional
># functionalityi when configured. NOTE: We package many
># more modules options than those found below.
>moduleload      back_mdb.la
>moduleload      back_monitor.la
>moduleload      syncprov.la        # Added module
>...
>
>and regenerate the slapd.d content :
>
>$ /etc/init.d/solserver stop
>$ rm -rf /opt/symas/etc/openldap/slapd.d/*
>$ /opt/symas/bin/slaptest -f /opt/symas/etc/openldap/slapd.conf -F
>/opt/symas/etc/openldap/slapd.d
>$ grep -ri "olcSpNoPresent" /opt/symas/etc/openldap/slapd.d
>slapd.d/cn=config/cn=schema.ldif:olcAttributeTypes: ( OLcfgOvAt:1.3 NAME
>'olcSpNoPresent' DESC 'Omit Present
>slapd.d/cn=config/cn=schema.ldif:  $ olcSpSessionlog $ olcSpNoPresent $
>olcSpReloadHint ) )
>$...
>
>This is problematic...

If there is a bug, I'd say it's the fact that the converter does write 
out these attributes.

Actually slapd replaces the entire cn=schema entry at runtime. As far as 
I can tell, the the cn=schema.ldif file on disk is never used. So it 
would certainly be dangerous to rely on its contents for anything.