kvno X not found in keytab; ticket is likely out of date

[Charles Hedrick]

Probably. If I interpret your email, you recreated the key table for the server. I assume you either rebooted the server or restarted everything relevant (most critical would be rpc.svcgssd).

I agree that rebooting clients would probably do it on the client side, except that not all systems are set up to clear /tmp on reboot. I don’t think that’s critical, but I can’t guarantee it.

> On Jul 22, 2019, at 9:26 AM, Laura Smith <n5d9xq3ti233xiyif2vp at protonmail.ch> wrote:
> 
> Hi Charles,
> 
> Surely the action of rebooting the client would do all of that ?
> 
> 
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Monday, July 22, 2019 2:13 PM, Charles Hedrick <hedrick at rutgers.edu> wrote:
> 
>> Unfortunately it’s likely to take some experimentation. My starting point would be on each client, unmount the file system, maybe delete /tmp/krb5ccmachine*, restart rpc.gssd, and remount.
>> 
>>> On Jul 22, 2019, at 6:22 AM, Laura Smith n5d9xq3ti233xiyif2vp at protonmail.ch wrote:
>>> Ok, I hold my hand up, I messed up. So the question is, how do I get myself out of this mess ?
>>> A summary of how I got here:
>>> • I have an NFS server and a bunch of clients connecting and auth using krb5.
>>> • This was all working beautifully.... until today.
>>> • Through an act of pure fat-fingered stupidity, I ran "addprinc -randkey nfs/name.of.nfs.server" when setting up a new NFS client (i.e used server name instead of client name).
>>> • Now everything is broken (none of the NFS clients can connect to the server and I am seeing the error messages below on the NFS server).
>>> • keytab on NFS server only had credentials for NFS server, so I deleted the keytab and created a new one through ktadd
>>> • that didnt' work. a reboot of the NFS server didn't work.
>>> Summary ? I'm up a smelly creek without a paddle !
>>> Messages on NFS server:
>>> 2019-07-22T11:01:35.075247+01:00 foo rpc.svcgssd[847]: ERROR: GSS-API: error in handle_nullreq: gss_accept_sec_context(): GSS_S_FAILURE (Unspecified GSS failure. Minor code may provide more information) - Request ticket server nfs/foo.example.com at EXAMPLE.CORP kvno 3 not found in keytab; ticket is likely out of date
>>> 2019-07-22T11:01:39.460944+01:00 foo rpc.svcgssd[847]: message repeated 41 times: [ ERROR: GSS-API: error in handle_nullreq: gss_accept_sec_context(): GSS_S_FAILURE (Unspecified GSS failure. Minor code may provide more information) - Request ticket server nfs/foo.example.com at EXAMPLE.CORP kvno 3 not found in keytab; ticket is likely out of date]
>>> 
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> 
>