Re: Planning migration to mdb

[Christian Kratzer <ck-lists@cksoft.de>]

Hi,

On Fri, 14 Mar 2014, Nick Milas wrote:

> Hi,
>
> We have a running openldap installation (2.4.39) - a single master - with 
> cn=config and hdb backend.
>
> So, config has the branches:
>
> I know we must slapcat our data and slapadd it in mdb afterwards.
>
> The question is: what changes should be done in the config DIT (and how) so 
> that the config changes from hdb backend to mdb backend?
>
> Is it enough to slapcat config, then change:
>
>   olcDatabase from {1}hdb to {1}mdb
>
> and:
>
>   objectClass from olcHdbConfig to olcMdbConfig
>
> ...?
>
> Anything else?
>
> Can we safely delete all values of the olcDbConfig attribute which originate 
> from converting from "DB_CONFIG"?

you can safely remove olcDbConfig. There is no berkeley db environment to configure.

I would say the bare mimimum would be something on the order of:

dn: olcDatabase={1}mdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcMdbConfig
olcDatabase: {1}mdb
olcDbDirectory <directory>
olcDbCheckpoint: <kbyte> <min>
olcDbMaxSize: <bytes>
olcDbIndex: ...

> What attributes can we safely remove?

anything mdb specific.

Greetings
Christian

--
Christian Kratzer                   CK Software GmbH
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