[389-devel] Upgrade procedures

[Rich Megginson]

I'm envisioning something like patch files in an RPM - things that can 
easily come and go depending on what needs to be done for a particular 
release.  In this case, instead of patch files, these would be short 
perl or shell scripts.  These would be invoked once or once per instance.

One way would be to have a large script which would be edited for each 
release, adding or deleting code as needed.  This is the way it worked 
in the past - the file quickly becomes "unruly".  However, we would only 
have to touch Makefile.am once to add the upgrade script.

Another way would be to have small scripts that could come and go with 
each release.  The disadvantage is that we would be constantly 
adding/deleting items from Makefile.am.  This is what I would prefer.

Before invoking the update scripts, the code would create some sort of 
context, containing information about the config directory, each 
instance, and an identity and credentials that can be used to manage 
each instance.  For example, when you run setup-ds-admin.pl -u, it uses 
the uid=admin identity and asks for the password, then uses that 
identity to manage each instance.  However, in the case where there is 
just the base ds package, we would need some way to ask or specify the 
identity for each instance.  For the UI, I don't think there's any way 
around just simply asking for the username and password for each 
instance (we can default the username to directory manager or the last 
value specified).  For .inf file usage, I was thinking about adding a 
new section - [slapd-instancename] - in which you could specify the 
RootDN and RootDNPwd.
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