On Fri, Jan 11, 2019 at 08:11:52PM -0500, vad...@gmail.com wrote:
> On Fri, Jan 11, 2019 at 12:24 PM Sumit Bose <sb...@redhat.com> wrote:
> 
> > On Fri, Jan 11, 2019 at 11:03:12AM -0500, vad...@gmail.com wrote:
> > > On Fri, Jan 11, 2019 at 6:50 AM Sumit Bose <sb...@redhat.com> wrote:
> > >
> > > > On Wed, Jan 09, 2019 at 12:47:34PM -0500, vad...@gmail.com wrote:
> > > > > Looking for suggestion on ID mapping.
> > > > >
> > > > > I need to point to a ID provider over proxy
> > > > >
> > > > > I have not found a concrete solution or some hint about how to setup
> > a
> > > > > proxy to a ID provider and how sssd can point to that proxy for ID
> > > > mapping.
> > > >
> > > > Can you rephrase your question? 'ID provider over proxy' should like
> > you
> > > > want some more details about SSSD's proxy provider as described in the
> > > > sssd.conf man page. But this is unrelated to what I associate typically
> > > > with 'ID mapping'. Please give a bit more details about what you are
> > > > trying to achieve.
> > > >
> > > >
> > > I am looking for a ID mapping solution. I do see following providers.
> > >
> > >            “proxy”: Support a legacy NSS provider.
> > >
> > >            “local”: SSSD internal provider for local users (DEPRECATED).
> > >
> > >            “files”: FILES provider. See sssd-files(5) for more
> > information
> > > on how to mirror local users and groups into SSSD.
> > >
> > >            “ldap”: LDAP provider. See sssd-ldap(5) for more information
> > on
> > > configuring LDAP.
> > >
> > >            “ipa”: FreeIPA and Red Hat Enterprise Identity Management
> > > provider. See sssd-ipa(5) for more information on
> > >            configuring FreeIPA.
> > >
> > >            “ad”: Active Directory provider. See sssd-ad(5) for more
> > > information on configuring Active Directory.
> > >
> > > I am looking for a suggestion.
> > >            ad - won't work as we will not be provided Administrator
> > password
> >
> > If the data for all users and groups is stored in AD this would be the
> > most recommended provider. You do not need the Administrator password
> > for SSSD to operate but a "normal" account which can read user and group
> > data is sufficient. Typically this is machine account which is created
> > when you join the Linux host to the AD domain.
> >
> 
> I will check it out Monday at work. But I do remember trying to join with
> realmd and it was asking
> for Administrator password. I also tried with -U <mycuid> and it did not
> let me join.

Yes, a typical user account does not have the rights to join. Please
have a look at
https://blogs.technet.microsoft.com/dubaisec/2016/02/01/who-can-add-workstation-to-the-domain/
especially the Delegation section.

> 
> I have to see if IT is willing to provide us a "machine account" to join
> our Linux servers

Strictly speaking the 'machine account' is created during the join what
you need is an accoutn with the needed privileges to join a machine.

It is also possible to pre-create the machine account with a known
one-time password, see
https://web.archive.org/web/20180310222447/http://stef.thewalter.net/how-to-join-active-directory-domains.html
(the original site is currently not available).

> 
> if that is a success that AD SID will automatically used to generate
> UID/GID, I think, correct?

yes

> 
> Assuming AD can be used as auth and id provider, then I will need to find a
> solution to setup a proxy to AD, so all my 100+ servers
> do not need to setup with firewall and manage access. This last piece
> deserves a separate new email, so not looking for an answer for this.
> 
> Appreciate your help!

yw

bye,
Sumit

> 
> 
> 
> > If you use realmd for joining the domain realmd will create a basic SSSD
> > configuration automatically.
> >
> > To join a domain you do not need the Administrator account either.
> > Please check the AD documentation how to assign privileges to a "normal"
> > account so that it can be use to join machines,
> >
> > >            ldap - won't work as IT says not to use LDAP and use kerberos
> > > instead for all things UNIX auth
> >
> > You can use 'auth_provider = krb5' with 'id_provider = ldap'
> >
> > >                    and to use /etc/passwd for id (yikes, we have 100s of
> > > servers to manage)
> > >            files - I am not sure how to have a central files for all
> > > accounts
> > >            local - seems deprecated
> > >            proxy - I am not sure how to set that up, but seems like
> > easier
> > > for a central ID provider?
> >
> > It depends what your central ID provider is and if there already is an
> > nss module for this provider. If your central ID provider is AD please
> > see my comments there.
> >
> > HTH
> >
> > bye,
> > Sumit
> >
> > >
> > > Please advise
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > > bye,
> > > > Sumit
> > > >
> > > > >
> > > > > All my servers are CentOS 7.
> > > > >
> > > > >
> > > > > --
> > > > > Asif Iqbal
> > > > > PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
> > > > > A: Because it messes up the order in which people normally read text.
> > > > > Q: Why is top-posting such a bad thing?
> > > >
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> > >
> > >
> > > --
> > > Asif Iqbal
> > > PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
> > > A: Because it messes up the order in which people normally read text.
> > > Q: Why is top-posting such a bad thing?
> >
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> 
> 
> -- 
> Asif Iqbal
> PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?

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