[SSSD-users] Can I map an LDAP value of 123456 to a user name of u123456 ?

[Michael Lake]

Hi all

I am currently authenticating users with Centos 6 and sssd to an LDAP
server. I'll be moving to a Centos 8 so have setup sssd to authenticate
to the LDAP server on my test Centos 8 box. However, our users in our
LDAP only contains all numeric identifiers for users. Centos 8 no longer accepts all
numeric user names and group names

Currently my sssd.conf contains:

  ldap_user_uid_number = uid
  ldap_user_gid_number = uid
  override_homedir = /homes/%u

Our LDAP server contains "uid" values for users like "123456"

I'll still be able to use the LDAP "uid" for UNIX uid and gid but what
I would like to be able to do is have the user name (and group name)
created by prefixing the LDAP "uid" values with a literal "u" to
make
them POSIX compliant.

Hence a user 123456 with "uid" of 123456 in LDAP can login and end up
with a username of "u123456".
I can't see a way to do that with a simple template in the "man
ssd.conf"

Mike Lake
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