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All of a sudden, new users cannot ssh into our ubuntu servers. When attempting, the connection will just close. I tried doing an su with my test user who has never logged into the server before and I get a permission denied. When I do a sudo service sssd status I get

jordend@server:/etc/ssh$ sudo service sssd status
● sssd.service - System Security Services Daemon
   Loaded: loaded (/lib/systemd/system/sssd.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2020-06-10 09:11:07 PDT; 10min ago
 Main PID: 1090 (sssd)
    Tasks: 4 (limit: 7065)
   CGroup: /system.slice/sssd.service
           ├─1090 /usr/sbin/sssd -i --logger=files
           ├─1435 /usr/lib/x86_64-linux-gnu/sssd/sssd_be --domain mydomain.com --uid 0 --gid 0 --logger=files
           ├─1519 /usr/lib/x86_64-linux-gnu/sssd/sssd_nss --uid 0 --gid 0 --logger=files
           └─1520 /usr/lib/x86_64-linux-gnu/sssd/sssd_pam --uid 0 --gid 0 --logger=files

Jun 10 09:11:06 server.mydomain.com sssd[be[1435]: Starting up
Jun 10 09:11:07 server.mydomain.com sssd[1520]: Starting up
Jun 10 09:11:07 server.mydomain.com sssd[1519]: Starting up
Jun 10 09:11:07 server.mydomain.com systemd[1]: Started System Security Services Daemon.
Jun 10 09:11:08 server.mydomain.com sssd[1090]: ; TSIG error with server: tsig verify failure
Jun 10 09:11:08 server.mydomain.com sssd[1090]: ; TSIG error with server: tsig verify failure
Jun 10 09:11:08 server.mydomain.com sssd[1090]: ; TSIG error with server: tsig verify failure
Jun 10 09:11:08 server.mydomain.com sssd[1090]: ; TSIG error with server: tsig verify failure
Jun 10 09:11:08 server.mydomain.com sssd[1090]: ; TSIG error with server: tsig verify failure
Jun 10 09:12:21 server.mydomain.com [sssd[krb5_child[2094]: No credentials cache found (filename: /tmp/krb5cc_600010461_Z13abW)

This appears to have happened on all 3 of my ubuntu servers.

  • Thanks for the edit, steeldriver. Was trying to figure out how to add the text box. – JordenD Jun 10 at 20:32
  • Anyone able to help with this? D: – JordenD Jun 16 at 15:35

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