CentOS 7
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BIND : Configure Chroot Environment2021/02/24

 
If you'd like to configure Chroot Environment for named, Set like follows.
[1] After setting Chroot environment, configuration files are placed under [/var/named/chroot].
[named.conf] is placed under [/var/named/chroot/etc/named.conf], zone files are placed [/var/named/chroot/var/named/***].
When modify settings, Change them under [/var/named/chroot] files.
[root@dlp ~]#
yum -y install bind-chroot
[root@dlp ~]#
/usr/libexec/setup-named-chroot.sh /var/named/chroot on
[root@dlp ~]#
systemctl disable --now named

[root@dlp ~]#
systemctl enable --now named-chroot

Created symlink /etc/systemd/system/multi-user.target.wants/named-chroot.service → /usr/lib/systemd/system/named-chroot.service.
[root@dlp ~]#
ll /var/named/chroot/etc

total 708
drwxr-x---. 3 root named     23 Feb 24 11:30 crypto-policies
-rw-r--r--. 2 root root     318 Oct 27 06:44 localtime
drwxr-x---. 2 root named      6 Feb 18 08:08 named
-rw-r-----. 1 root named   2373 Feb 24 11:24 named.conf
-rw-r-----. 1 root named   1029 Feb 18 08:08 named.rfc1912.zones
-rw-r--r--. 1 root named   1070 Feb 18 08:08 named.root.key
drwxr-x---. 3 root named     25 Feb 24 11:30 pki
-rw-r--r--. 1 root root    6568 Sep 10  2018 protocols
-rw-r-----. 1 root named    100 Feb 24 11:16 rndc.key
-rw-r--r--. 1 root root  692252 May 15  2020 services

[root@dlp ~]#
ll /var/named/chroot/var/named

total 24
-rw-r--r--. 1 root  root   313 Feb 24 11:14 0.0.10.db
drwxr-x---. 7 root  named   61 Feb 24 11:30 chroot
drwxrwx---. 2 named named   23 Feb 24 11:16 data
drwxrwx---. 2 named named  108 Feb 24 11:30 dynamic
-rw-r-----. 1 root  named 2253 Feb 18 08:08 named.ca
-rw-r-----. 1 root  named  152 Feb 18 08:08 named.empty
-rw-r-----. 1 root  named  152 Feb 18 08:08 named.localhost
-rw-r-----. 1 root  named  168 Feb 18 08:08 named.loopback
drwxrwx---. 2 named named    6 Feb 18 08:07 slaves
-rw-r--r--. 1 root  root   404 Feb 24 11:26 srv.world.lan
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