[Freeipa-users] A way to rename a host and/or a host group?

[Marco Pizzoli]

On Wed, Feb 22, 2012 at 10:34 PM, JR Aquino <JR.Aquino at citrix.com> wrote:

> On Feb 22, 2012, at 1:24 PM, Marco Pizzoli wrote:
>
> > Hi guys,
> > I see that there's no way to rename a host once created. Same issue with
> host groups.
> > Could you confirm that it is by design and so I never will be able to do
> that?
> >
> > Thanks
> >     Marco (wanting to rename everything :-( )
>
> Hi Marco.  Yes, you do need to fully delete and uninstall a host from
> FreeIPA before readding it with a new name.
>
>
> http://docs.fedoraproject.org/en-US/Fedora/15/html/FreeIPA_Guide/renaming-machines.html
>
> What may make this easier for you is a feature in 389 DS called Automember:
>
> http://directory.fedoraproject.org/wiki/Auto_Membership_Design
>
> Automember is a way to use regular expression to tie a given fqdn-type to
> a given hostgroup.  So that when you 'add' a host with a similar name. say:
> webserver2.example.com, the host automatically ends up in the
> 'webservers' host group.
>
> If you wish for a bunch of hosts to be "renamed"/re-provisioned, and
> automatically assigned to a new hostgroup, you can predefine the regex
> mapping and make this process a little easier.
>
> FreeIPA provides a CLI (and in 2.1.90, a WebUI) for managing these entries.
>
>
>
> Here is the help doc from the cli tool:
>
> Auto Membership Rule.
>
> Bring clarity to the membership of hosts and users by configuring inclusive
> or exclusive regex paterns, you can automatically assign a new entries into
> a group or hostgroup based upon attribute information.
>
> A rule is directly associated with a group by name, so you cannot create
> a rule without an accompanying group or hostgroup
>
> A condition is a regular expression used by 389-ds to match a new incoming
> entry with an automember rule. If it matches an inclusive rule then the
> entry is added to the appropriate group or hostgroup.
>
> EXAMPLES:
>
>  Create the initial group or hostgroup:
>   ipa hostgroup-add --desc="Web Servers" webservers
>   ipa group-add --desc="Developers" devel
>
>  Create the initial rule:
>   ipa automember-add --type=hostgroup webservers
>   ipa automember-add --type=group devel
>
>  Add a condition to the rule:
>   ipa automember-add-condition --key=fqdn --type=hostgroup
> --inclusive-regex=^web[1-9]+\.example\.com webservers
>   ipa automember-add-condition --key=manager --type=group
> --inclusive-regex=^uid=mscott devel
>
>  Add an exclusive condition to the rule to prevent auto assignment:
>   ipa automember-add-condition --key=fqdn --type=hostgroup
> --exclusive-regex=^web5\.example\.com webservers
>
>  Add a host:
>    ipa host-add web1.example.com
>
>  Add a user:
>    ipa user-add --first=Tim --last=User --password tuser1 --manager=mscott
>
>  Verify automembership:
>    ipa hostgroup-show webservers
>      Host-group: webservers
>      Description: Web Servers
>      Member hosts: web1.example.com
>
>    ipa group-show devel
>      Group name: devel
>      Description: Developers
>      GID: 1004200000
>      Member users: tuser
>
>  Remove a condition from the rule:
>   ipa automember-remove-condition --key=fqdn --type=hostgroup
> --inclusive-regex=^web[1-9]+\.example\.com webservers
>
>  Modify the automember rule:
>    ipa automember-mod
>
>  Set the default target group:
>    ipa automember-default-group-set --default-group=webservers
> --type=hostgroup
>    ipa automember-default-group-set --default-group=ipausers --type=group
>
>  Set the default target group:
>    ipa automember-default-group-remove --type=hostgroup
>    ipa automember-default-group-remove --type=group
>
>  Show the default target group:
>    ipa automember-default-group-show --type=hostgroup
>    ipa automember-default-group-show --type=group
>
>  Find all of the automember rules:
>    ipa automember-find
>
>  Display a automember rule:
>    ipa automember-show --type=hostgroup webservers
>    ipa automember-show --type=group devel
>
>  Delete an automember rule:
>    ipa automember-del --type=hostgroup webservers
>    ipa automember-del --type=group devel
>
> Topic commands:
>  automember-add                   Add an automember rule.
>  automember-add-condition         Add conditions to an automember rule.
>  automember-default-group-remove  Remove default group for all unmatched
> entries.
>  automember-default-group-set     Set default group for all unmatched
> entries.
>  automember-default-group-show    Display information about the default
> automember groups.
>  automember-del                   Delete an automember rule.
>  automember-find                  Search for automember rules.
>  automember-mod                   Modify an automember rule.
>  automember-remove-condition      Remove conditions from an automember
> rule.
>  automember-show                  Display information about an automember
> rule.
>
>

Hey, thanks a lot!
Now I have something to read before falling asleep.... :-)
Marco
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