Hello.
We have to migrate an old Centos 6 to Centos 8. C6 has UID/GID starting
at number 500.
I the Users should possibily keep the existing UID/GID as on the old system.
I changed on the Centos 8 system, in /etc/login.defs, the lines
UID_MIN/SYS_UID_MAX and GID_MIN/SYS_GID_MAX:
#
# Min/max values for automatic uid selection in useradd
#
UID_MIN 500
UID_MAX 60000
# System accounts
SYS_UID_MIN 201
SYS_UID_MAX 499
#
# Min/max values for automatic gid selection in groupadd
#
GID_MIN 500
GID_MAX 60000
# System accounts
SYS_GID_MIN 201
SYS_GID_MAX 499
and extracted all users and groups with UID/GID greater than 499 from
the old system and inserted in the corresponding files
(passwd/groups/shadows) on the new system.
So wanted to ask if this is a valid thing to do? Especially regarding
security of the new system. Can it create problems in the future
(updates etc.)?
It is a simple LAMP server.
Thanks,
Thomas
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