Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

Right now if I try to add a non-system user not in the university's Kerberos realm I am prompted for a Kerberos password anyway. Obviously there is no password to be entered, so I just press enter and see:

passwd: Authentication token manipulation error
passwd: password unchanged

Typing passwd newuser has the same issue with the same message.

I tried using pwconv in the hopes that only a shadow entry was needed, but it changed nothing.

I want to be able to add a local user not in the realm and give them a local password without being bothered about Kerberos.

I am on Ubuntu 10.04. Here are my /etc/pam.d/common-* files (the defaults that Ubuntu's pam-auth-update package generates):

account

# here are the per-package modules (the "Primary" block)
account [success=1 new_authtok_reqd=done default=ignore]        pam_unix.so
# here's the fallback if no module succeeds
account 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
account required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
account required                        pam_krb5.so minimum_uid=1000
# end of pam-auth-update config

auth

# here are the per-package modules (the "Primary" block)
auth    [success=2 default=ignore]      pam_krb5.so minimum_uid=1000
auth    [success=1 default=ignore]      pam_unix.so nullok_secure try_first_pass
# here's the fallback if no module succeeds
auth    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
auth    required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
# end of pam-auth-update config

password

# here are the per-package modules (the "Primary" block)
password        requisite                       pam_krb5.so minimum_uid=1000
password        [success=1 default=ignore]      pam_unix.so obscure use_authtok     try_first_pass sha512
# here's the fallback if no module succeeds
password        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
password        required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
# end of pam-auth-update config

session

# here are the per-package modules (the "Primary" block)
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
# and here are more per-package modules (the "Additional" block)
session optional                        pam_krb5.so minimum_uid=1000
session required        pam_unix.so
# end of pam-auth-update config
share|improve this question

1 Answer 1

You can desactivate temporarly kerberos with the pam-auth-update. You can then add users/change passwords. And then reactivate kerberos with pam-auth-update when you are done.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.