stan via users writes:
The command is actually rndc dumpdb and redhat has specified a dumpfile in /etc/named.conf as /var/named/data/cache_dump.db Would cache entries have the URL name with the IP address?
The dump file will have DNS records in zone file format. An example from mine's:
; glue
hotair.com. 155017 NS fay.ns.cloudflare.com.
155017 NS pablo.ns.cloudflare.com.
You should see stuff in there that looks like a zone file.
; Start view _default ; ; ; Cache dump of view '_default' (cache _default) ; $DATE 20190701230228
At this point, my dump file includes all the cached records. Yours appears to not have anything here, so, yes, something's wrong with your caching nameserver.
In the man page for named, it says It is not necessary to run named in a chroot environment if the Red Hat SELinux policy for named is enabled. When enabled, this policy is far more secure than a chroot environment. Users are recommended to enable SELinux and remove the bind-chroot package. How do I tell whether I am using a chroot or SELinux?
If you're using chroot, it's a separate package, the aforementioned bind- chroot.
It's unlikely that SELinux has anything to do with it.
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