In addition to what Matthijs said, please make sure that all path components
in /data/chroot/named/keys/dnssec/example.com/ <http://example.com/> need to 
have correct permissions,
this is easy to get wrong. I've burnt on this too many times.

Easiest way how to test is switching to the user that named runs under and try
changing to the directory and checking if you can access the files.

Ondrej
--
Ondřej Surý (He/Him)
ond...@isc.org

My working hours and your working hours may be different. Please do not feel 
obligated to reply outside your normal working hours.

> On 14. 10. 2022, at 16:17, PGNet Dev <pgnet....@gmail.com> wrote:
> 
> hi
> 
>> Think ownership, permission and things like SELinux, AppArmore depending on 
>> your OS.
> 
> on this box, no SELinux or AppArmor
> 
> in my named.conf
> 
>       directory "/namedb/production";
> 
> and for my domain's dnssec
> 
>       key-directory "/keys/dnssec/example.com";
> 
> pathnames are relative to chroot.
> 
> here, chroot is @ "/data/chroot/named",
> 
>       ps aux | grep named
>               named    14285  0.0  0.2 526388 67360 ?        Ssl  08:47   
> 0:00 /usr/sbin/named -f -t /data/chroot/named -n 2 -S 1024 -u named -c 
> /etc/named.conf
> 
> checking,
> 
>       ls -al \
>        /data/chroot/named/namedb/production \
>        /data/chroot/named/keys/dnssec/example.com/
> 
> access looks ok (?)
> 
>       /data/chroot/named/keys/dnssec/example.com/:
>               total 32K
>               drwxr-xr-x 2 named named 4.0K Oct 12 18:09 ./
>               drwxr-xr-x 5 named named 4.0K Oct 14 00:22 ../
>               -rw-r----- 1 named named  405 Oct 13 19:14 
> Kexample.com.+013+17296.key
>               -rw-r----- 1 named named  215 Oct 13 19:14 
> Kexample.com.+013+17296.private
>               -rw-r----- 1 named named  572 Oct 13 19:14 
> Kexample.com.+013+17296.state
>               -rw-r----- 1 named named  455 Oct 13 19:14 
> Kexample.com.+013+62137.key
>               -rw-r----- 1 named named  235 Oct 13 19:14 
> Kexample.com.+013+62137.private
>               -rw-r----- 1 named named  556 Oct 13 19:14 
> Kexample.com.+013+62137.state
> 
>       /data/chroot/named/namedb/production:
>               total 16K
>               drwxrwxr-x 2 named named 4.0K Oct 14 08:47 ./
>               drwxr-xr-x 5 named named 4.0K Oct 14 08:47 ../
>               -rw------- 1 named named 8.0K Oct 14 08:47 external.nzd
>               -rw-r----- 1 named named    0 Oct 14 08:47 managed-keys.bind
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