On 14.10.2014 15:06, Alexander Bokovoy wrote:
On Tue, 14 Oct 2014, Orkhan Gasimov wrote:
So which way do I go?
1) Change the server VM`s hostname from "ipa1.eurosel.az" to
"ipa1.ipa.eurosel.az" prior to issuing IPA installation command
2) or leave my hostname and contents of /etc/hosts file intact and specify a
different FQDN and domain part of the IPA server after issuing IPA
installation command?
Yes, I know - this is a question Homer Simpson would ask.
Allocate ipa.eurosel.az domain zone to FreeIPA and install FreeIPA with
integrated DNS. Essentially, (1), with domain=ipa.eurosel.az, realm
IPA.EUROSEL.AZ.

If you want later to see how this setup scales, all you would need to do
is to make sure the other clients would use ipa1.ipa.eurosel.az as a
resolver.

Again - in production it is unnecessary to change resolv.conf if you have proper NS records in place.

Petr^2 Spacek

14-Oct-14 17:43, Petr Spacek пишет:
On 14.10.2014 13:48, Orkhan Gasimov wrote:
I need further assistance with this moment:
"specify IPA domain name which is sub-domain of you existing domain (e.g.
ipa.eurosel.az) ".

Currently my FreeIPA server's hostname is ipa1.eurosel.az, and client's
hostname is bsd1.eurosel.az.
So when running this command:

"ipa-server-install --setup-dns --forwarder <ip address of your *existing*
DNS
server>",

the installation program detects the hostname of the VM (ipa1.eurosel.az) and
offers it as IPA server FQDN;
then it offers "eurosel.az" as the domain name. I can make changes right
during the installation process (FQDN = ipa1.ipa.eurosel.az & domain =
ipa.eurosel.az), but then there will be a conflict with the real hostname and
records in the /etc/hosts file.

On the other hand, if I change the hostname of the server VM to
"ipa1.ipa.eurosel.az" prior to running the IPA installation program, then the
installation program will offer my server an FQDN of "ipa1.ipa.eurosel.az"
and
a domain name of "ipa.eurosel.az". But doesn`t it mean that my client`s
hostname should also be changed to bsd1.ipa.eurosel.az? I`d like to avoid
this, because in production I won`t be able to change the domain part of FQDN
for hundreds of clients.

Clients don't need to be in the same domain as IPA. The IPA domain in DNS
is necessary to store 'metadata' like SRV and TXT records etc.

You can even experiment with IPA servers which are not in the IPA domain
but I'm not sure how much it was tested.

Alexander can add more details about records required for AD integration
and how it should work with clients which are not in the IPA domain.

Petr^2 Spacek


14-Oct-14 16:29, Petr Spacek пишет:
On 14.10.2014 11:49, Orkhan Gasimov wrote:
I suspected that problems could arise with DNS, and here they are...

In fact, this entire string: "ipa_server = _srv_ #our FreeIPA server has
DNS
SRV entries" was taken as-is from the how-to on FreeBSD forums. First I
commented it out, because was unsure sure if it was appropriate for my
simple
setup with just 2 VMs and and a bunch of records in /etc/hosts file. After
starting sssd, I could get no IPA data with"getent passwd" or "getent
group"
commands. They I uncommented it and restarted sssd, but things remained the
same.

Now your advice is:  "...add IP address or hostname to the option
ipa_server",
but you use an arbitrary name like "vm-120.eurosel.az". Could you please
explain which host`s FQDN I should put there? If I use
"ipa1.eurosel.az", then
sssd won`t start (complains about "...Looping detected inside
krb5_get_in_tkt...").

If it MUST be a DNS server, then everything changes. And the question then
becomes: is it possible to set up a test FreeIPA client-server interaction
using only 2 VMs and proper records in /etc/hosts instead of a DNS
server? Or
one MUST add a third VM and make it a DNS server to facilitate
client-server
interaction?

IPA theoretically can work without DNS records but it requires very careful
configuration on clients and is strongly discouraged.

If you want to do quick & dirty test, do this:
$ ipa-server-install --setup-dns --forwarder <ip address of your *existing*
DNS server>
+ specify IPA domain name which is sub-domain of you existing domain (e.g.
ipa.eurosel.az)
+ change /etc/resolv.conf on *all* clients to point to IPA server

*This is a dirty trick* and it will not work unless all your clients has the
IPA server in resolv.conf. It will most likely break when you try to use AD
trust with AD clients etc.


*In production environment* you should add NS records for ipa.eurosel.az
domain to the parent DNS zone to create proper delegation. In that case you
don't need to fiddle with resolv.conf on all clients.

Let me know if you need further assistance.

Petr^2 Spacek


14-Oct-14 12:58, Lukas Slebodnik пишет:
On (14/10/14 10:23), Orkhan Gasimov wrote:
Thanks to both of you for the interest.
Here`s the info you asked:

1. Putting "debug_level = 7" either in [domain] or/and [nss] section
of the
/usr/local/etc/sssd/sssd.conf file gives nothing in the log. The log file
located at /var/log/sssd/sssd.log is only populated with data when I make
some errors in sssd.conf & sssd process fails to start. But that`s the
case
only if I deliberately introduce some errors; with current configuration
sssd
starts successfully.

2. My original sssd.conf (without debugs) is as follows (exact copy of
what
was shown in the post at FreeBSD forums):

-----------------------------------------
[domain/mydomain.com]
cache_credentials = True
krb5_store_password_if_offline = True
ipa_domain = mydomain.com
id_provider = ipa
auth_provider = ipa
access_provider = ipa
ipa_hostname = ipa1.mydomain.com
chpass_provider = ipa
ipa_server = _srv_ #our FreeIPA server has DNS SRV entries

[resolv_getsrv_send] (0x0100): Trying to resolve SRV record of
'_ldap._tcp.eurosel.az'
...
[resolve_srv_done] (0x0020): SRV query failed: [Domain name not found]
[set_srv_data_status] (0x0100): Marking SRV lookup of service 'IPA' as
'not
resolved'
[be_resolve_server_process] (0x0080): Couldn't resolve server (SRV lookup
meta-server), resolver returned (5)

DNS discovery of IPA server failed, becuase you just configured few
hostnames
in /etc/hosts

You can add IP address or hostname to the option ipa_server
e.g.
    ipa_server = _srv_, vm-120.eurosel.az

BTW In my opinion, it is better to have comment before the optiona and
not on
the same line :-)

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