I set mine at uid/gid=2000 and pray it's good till I retire :)



On 03/03/2015 04:44 PM, Chris Schanzle wrote:
> On 03/03/2015 03:33 PM, P. Larry Nelson wrote:
>> That used to happen in the old days before
>> system-config-users pretty much kept generated UIDs/GIDs well out
>> of the range that an installed piece of software might use.
>> I believe the rule is now that real people users get a UID > 500
>> and installed apps (like ntop, UID:103, GID:160) use UIDs < 500,
>> but I don't know if that's a hard and fast rule with apps or not.
>> I do the same thing with any local group I create - give it a
>> GID > 500.
>
> The authoritative source used by useradd (perhaps others) is /etc/login.defs:
>
> grep ^UID_MIN /etc/login.defs
> UID_MIN              500
>
> Historically it was UID >= 500 (note 500 was the first), in recent Fedora's and EL7, it's now 1000:
>
> grep ^UID_MIN /etc/login.defs
> UID_MIN                  1000
>
>
> Note new systems also have min/max values for system accounts in login.defs:
>
> # Min/max values for automatic uid selection in useradd
> #
> UID_MIN                  1000
> UID
> # System accounts
> SYS_UID
> SYS_UID_MAX               999
>