[SSSD-users] SSSD & SSH on Ubuntu 14.04 - login failure
Jakub Hrozek
jhrozek at redhat.com
Sun Jul 6 13:11:32 UTC 2014
On 03 Jul 2014, at 16:56, Johannes Ramm-Ericson <johannes at ramm-ericson.se> wrote:
> Hi,
>
> Apologies for any naively stated questions but I am having trouble getting SSSD, Active Directory and SSH to interact as I expect on an Ubuntu 14.04 server. To be quite honest; I am not even certain that SSSD is the problem anymore since I seem to have successfully authenticated, it's just that my SSH session is interrupted with :
>
>
> johannes at laplnxjohannes:~$ ssh johannes at bifrost-test
> Password:
> Write failed: Broken pipe
>
>
> Extract from /var/log/auth.log
> ------------------------------------------
> Jul 3 14:49:58 bifrost-test sshd[10281]: pam_sss(sshd:auth): authentication success; logname= uid=0 euid=0 tty=ssh ruser= rhost=lichen user=johannes
Here it seems SSSD has done its job and returned authentication success to the PAM subsystem.
> Jul 3 14:49:58 bifrost-test sshd[10279]: Accepted keyboard-interactive/pam for johannes from 192.168.120.12 port 35886 ssh2
> Jul 3 14:49:58 bifrost-test sshd[10279]: fatal: PAM: pam_setcred(): Failure setting user credentials
This seems to be the problem.
Did you try increasing the log level of the SSHD (not SSSD :-)) and checking out the logs? Is there anything in the syslog (which would be stored either in the journal or /var/log/messages on Fedora, I’m not so sure about Ubuntu)
>
> My /etc/nsswitch.conf
> --------------------------------
> passwd: files sss
> group: files sss
> shadow: files sss
>
> hosts: files dns
> networks: files
>
> protocols: db files
> services: db files
> ethers: db files
> rpc: db files
>
> netgroup: nis
> sudoers: files
>
> /etc/pam.d/common-session:
> ------------------------------------------
> session [default=1] pam_permit.so
> # here's the fallback if no module succeeds
> session requisite pam_deny.so
> # prime the stack with a positive return value if there isn't one already;
> # this avoids us returning an error just because nothing sets a success code
> # since the modules above will each just jump around
> session required pam_permit.so
> # The pam_umask module will set the umask according to the system default in
> # /etc/login.defs and user settings, solving the problem of different
> # umask settings with different shells, display managers, remote sessions etc.
> # See "man pam_umask".
> session optional pam_umask.so
> # and here are more per-package modules (the "Additional" block)
> session required pam_unix.so
> session optional pam_sss.so
> # end of pam-auth-update config
>
> root at bifrost-test:/var/log/sssd# apt-cache policy sssd
> sssd:
> Installed: 1.11.5-1ubuntu3
>
>
> I have done my share of googling and only ended up with some very old - seemingly, irrelevant to my problem - page hits.
> So, I've turned to this mailing list in hope of finding someone who may have encountered similar issues. Any ideas or suggestions?
>
> Thanks and Best Regards,
> Johannes
>
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