Hi,

The redhat docs talk about the allow_delegation setting for ad-clients.
Setting this boolean on the server principal would allow the server to forward your gssapi credentials to the nfs server on your behalf.
Thus authentication you to the nfs4 server allowing you to mount the kerberized export.
However you said you did not use ad-ldap so I guess this does not apply to you.

Rob

2017-06-26 7:58 GMT+02:00 Tony Brian Albers via FreeIPA-users <freeipa-users@lists.fedorahosted.org>:
Hi Rob,

Not sure what the redhat docs describe, we're not using AD with this system.

It seems somehow that GSSAPI does not forward the kerberos ticket obtained on the client machine correctly, when I connect to the machine I want to work on, it just says that the ticket has expired.

I'm still trying a few things, I'll post to the list when I've got something new.

/tony


On 2017-06-22 15:13, Rob Verduijn via FreeIPA-users wrote:
> If you are using gss-api and using putty to log in.
> Did you do the thing metioned in 5.3.4.5
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Windows_Integration_Guide/trust-managing.html#kerberos-flags-services-hosts
> also see
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Linux_Domain_Identity_Authentication_and_Policy_Guide/kerberos-for-entries.html#kerberos-flags-services-hosts
>
> Rob
>
> 2017-06-22 13:50 GMT+02:00 Tony Brian Albers via FreeIPA-users <freeipa-users@lists.fedorahosted.org <mailto:freeipa-users@lists.fedorahosted.org>>:
>
>     Hi guys,
>
>     We have a setup where the FreeIPA server also hosts the user's homedirs. These are shared via NFSv4 and are automounted when a user logs in.
>
>     [root@adm-001 ~]# cat /etc/exports
>     /data/home      172.16.216.0/24(rw,no_root_squash,sec=sys:krb5:krb5i:krb5p,fsid=1338) <http://172.16.216.0/24%28rw,no_root_squash,sec=sys:krb5:krb5i:krb5p,fsid=1338%29>
>
>     [root@adm-001 ~]# ipa automountkey-show
>     Location: default
>     Map: auto.home
>     Key: *
>       Key: *
>       Mount information: -fstype=nfs4,rw,sec=krb5,intr,hard adm-001.domain:/data/home/&
>
>
>     While normal ssh logins work (you ssh to the client and put in your password), passwordless ssh does not work. It's obvious that passwordless logins do not activate the kerberos ticket function, but that results in the users being unable to read their own files in their homedirs.
>
>     For now we ask users to not do passwordless login, but could we make the latter work?
>
>     TIA,
>
>     /tony
>
>
>     --
>     Tony Albers
>     Systems administrator, IT-development
>     Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark.
>     Tel: +45 2566 2383 <tel:%2B45%202566%202383> / +45 8946 2316 <tel:%2B45%208946%202316>
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>
>
>
>
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--
Tony Albers
Systems administrator, IT-development
Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark.
Tel: +45 2566 2383 / +45 8946 2316
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