On Thu, Feb 2, 2012 at 3:56 PM, steve <steve@xxxxxxxxxxxx> wrote: > On 02/02/12 14:29, steve wrote: >> >> On 02/02/2012 02:05 PM, Tigran Mkrtchyan wrote: >>> >>> On Thu, Feb 2, 2012 at 12:33 PM, steve<steve@xxxxxxxxxxxx> wrote: >>>> >>>> On 02/02/12 11:58, Tigran Mkrtchyan wrote: >>>>> >>>>> Hi Steve, >>>>> >>>>>> I already use nfs4 to serve my Linux clients. I'm going to kerberize >>>>>> it. >>>>>> My >>>>>> clients already have machine and host principals. What else do they >>>>>> need? >>>>>> >>>>>> 1. nfs/client.domain.name >>>>>> 2. nfs/server.domain/name >>>>>> 3. neither >>>>>> 4. both >>>>>> >>>>> We run kerberized NFS. >>>>> >>>>> our keytab contains: >>>>> >>>>> on server; >>>>> nfs/server.domain >>>>> >>>>> on client: >>>>> nfs/client.domain >>>>> >>>>> and, of course, you need a consistent idmap configuration. >>>>> >>>>> Tigran. >>>>> >>>> Hi Tigran >>>> >>>> That's what we have on our test lan at the moment. I can understand that >>>> the >>>> server would need the service principal: >>>> nfs/server.domain >>>> but not the client, as it's not offering any kerberized service. >>> >>> The mount step happens on behalf of host as there are no user requests >>> yet. >>> Client host credentials are used at that time. >>> >>>> As an experiment, I removed the nfs/client.domain from a client keytab, >>>> rebooted and remounted the share. We could still access the kerberized >>>> nfs >>>> share. Maybe there were still some tickets left somewhere? That has me >>>> really confused. >>> >>> Huh! did you enforce kerberos in /etc/exports? >>> >> Yes. /etc/exports exports as gss/krb5 >> I made a screenshot: >> >> >> http://3.bp.blogspot.com/-g40b11Ys_DA/TypYtlO-ixI/AAAAAAAAAIc/cZdeRhnVuY4/s1600/s4all.png >> >> That's why I'm confused. >> Steve > > > Digging a bit further, here is the output of mount on the client: > http://dl.dropbox.com/u/45150875/krb5testnfs.png > > And this appears immediately after the mount: > http://dl.dropbox.com/u/45150875/krb5nfstmp.png > > Most of the documentation tells you to stick nfs into the client keytab as > well as the server keytab, but here, I only have the principal on the > server. > > What am I missing? I think client simply falls back to 'host' if nfs entry is not available. Tigran. > Thanks, > Steve > -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
