[ovirt-users] [ovirt 3.4.3] No KDC can be obtained for domain... after using engine-manage-domains edit

[Grzegorz Szypa]

Hi.

It's a little strange, because I can easily attach clients (VMs) to the
Microsoft AD domain. Only sometimes there are problems with connectivity,
but I will solve this in two ways: add the DNS suffix or adds a static
primary DNS, which indicates domain.

/etc/resolv.conf
nameserver 172.30.30.253        # DNS and AD server
nameserver 172.30.30.1            # Router -  DHCP
search szypa.net

By the way, is also one strange thing:

Every time when I inserted record "nameserver 172.30.30.253" to file
"resolv.conf" from time to time the file is overwritten / changed (I have
no idea how) and record "nameserver 172.30.30.253" disappears (just as you
would in general not been added).

*And in all this is the cause that generates the problem.*

*So I think that the problem are solved, but i do not know how to resolve a
problem with hidding configuration in /etc/resolv.conf*

Regards,

*Grzegorz Szypa*


2014-09-24 8:03 GMT+02:00 Martin Perina <mperina at redhat.com>:

> Hi,
>
> I looked at the logs and you have serious DNS problems:
>
> 2014-09-24 07:32:24,984 ERROR
> [org.ovirt.engine.core.bll.adbroker.GetRootDSE]
> (DefaultQuartzScheduler_Worker-15) Failed to query rootDSE for LDAP server
> ldap://szypa.net:389 due to szypa.net:389
> 2014-09-24 07:32:24,984 ERROR
> [org.ovirt.engine.core.bll.adbroker.DirectorySearcher]
> (DefaultQuartzScheduler_Worker-15) Failed ldap search server ldap://
> szypa.net:389 using user ovirt at SZYPA.NET due to
> javax.naming.CommunicationException: szypa.net:389 [Root exception is
> java.net.UnknownHostException: szypa.net]. We should try the next server
>
> You cannot authenticate your users, because LDAP server ldap://
> szypa.net:389
> cannot be resolved. Are you able to resolve szypa.net on you engine host?
>
>
>
> ----- Original Message -----
> > From: "Grzegorz Szypa" <grzegorz.szypa at gmail.com>
> > To: "Martin Perina" <mperina at redhat.com>, users at ovirt.org
> > Sent: Wednesday, September 24, 2014 7:32:56 AM
> > Subject: Re: [ovirt-users] [ovirt 3.4.3] No KDC can be obtained for
> domain... after using engine-manage-domains edit
> >
> > ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 <<>> SRV _kerberos._
> > tcp.szypa.net
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 65248
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> >
> > ;; QUESTION SECTION:
> > ;_kerberos._tcp.szypa.net.      IN      SRV
> >
> > ;; AUTHORITY SECTION:
> > net.                    890     IN      SOA     a.gtld-servers.net.
> > nstld.verisign-grs.com. 1411536712 1800 900 604800 86400
> >
> > ;; Query time: 28 msec
> > ;; SERVER: 172.30.30.1#53(172.30.30.1)
> > ;; WHEN: Wed Sep 24 07:32:23 2014
> > ;; MSG SIZE  rcvd: 115
>
>
> This looks like that szypa.net domain doesn't exist at all. Do you really
> have
> correct DNS configuration on engine host?
>
> >
> >
> > 2014-09-24 7:06 GMT+02:00 Martin Perina <mperina at redhat.com>:
> >
> > > Hi,
> > >
> > > the error message mean, that we cannot find any KDC servers
> > > in DNS. Could you please post results of the following command:
> > >
> > >   dig SRV _kerberos._tcp.szypa.net
> > >
> > > Regarding the errors after oVirt restart, could you please post
> > > your engine.log?
> > >
> > > Thanks
> > >
> > > Martin Perina
> > >
> > >
> > > ----- Original Message -----
> > > > From: "Grzegorz Szypa" <grzegorz.szypa at gmail.com>
> > > > To: fkobzik at redhat.com, users at ovirt.org
> > > > Sent: Tuesday, September 23, 2014 3:41:02 PM
> > > > Subject: [ovirt-users] [ovirt 3.4.3] No KDC can be obtained for
> > > domain... after using engine-manage-domains edit
> > > >
> > > > Hi.
> > > >
> > > > I have a problem with losting connetction to Windows Active
> Directory.
> > > >
> > > > Normaly I connect ovirt with AD like this:
> > > >
> > > > "engine-manage-domains add --domain= szypa.net --provider=ad
> > > --user=ovirt
> > > > --add-permissions"
> > > >
> > > > After period time, example when i restart ovirt, connection is lost
> > > becouse i
> > > > cannot add new user created in AD, so i thinking that i refresh conf.
> > > > connection to ad:
> > > >
> > > > "engine-manage-domains edit --domain= szypa.net --provider=ad
> > > --user=ovirt
> > > > --add-permissions"
> > > >
> > > > and i get this error:
> > > >
> > > > No KDC can be obtained for domain szypa.net
> > > >
> > > > have any idea?
> > > >
> > > > I read that this problem is resolved in previous ovirt version
> > > >
> > > > --
> > > > G.Sz.
> > > >
> > > > _______________________________________________
> > > > Users mailing list
> > > > Users at ovirt.org
> > > > http://lists.ovirt.org/mailman/listinfo/users
> > > >
> > >
> >
> >
> >
> > --
> > G.Sz.
> >
>



-- 
G.Sz.
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