Description of problem:
SELinux is preventing named from 'read' accesses on the chr_file urandom.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that named should be allowed read access on the urandom chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'named' --raw | audit2allow -M my-named
# semodule -X 300 -i my-named.pp

Additional Information:
Source Context                system_u:system_r:named_t:s0
Target Context                system_u:object_r:named_conf_t:s0
Target Objects                urandom [ chr_file ]
Source                        named
Source Path                   named
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.14.1-44.fc28.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.18.12-200.fc28.x86_64 #1 SMP Thu
                              Oct 4 15:46:35 UTC 2018 x86_64 x86_64
Alert Count                   8
First Seen                    2018-10-05 07:14:58 CDT
Last Seen                     2018-10-15 08:59:26 CDT
Local ID                      0af29f90-19cb-4b8d-8ee3-cc6a36151987

Raw Audit Messages
type=AVC msg=audit(1539611966.975:274): avc:  denied  { read } for  pid=3704 comm="named" name="urandom" dev="dm-1" ino=2116658 scontext=system_u:system_r:named_t:s0 tcontext=system_u:object_r:named_conf_t:s0 tclass=chr_file permissive=0


Hash: named,named_t,named_conf_t,chr_file,read

Version-Release number of selected component:
selinux-policy-3.14.1-44.fc28.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.5
hashmarkername: setroubleshoot
kernel:         4.18.12-200.fc28.x86_64
type:           libreport