# yum install bind-utils bind-chroot -y
# /usr/libexec/setup-named-chroot.sh /var/named/chroot on
# systemctl stop named
# systemctl disable named
# systemctl start named-chroot
# systemctl enable named-chroot
# ls -al /var/named/chroot/etc
......
total 704
drwxr-x--- 4 root named 4096 Feb 22 18:15 .
drwxr-x--- 7 root named 4096 Feb 22 18:15 ..
-rw-r--r--. 1 root root 384 Jan 30 16:49 localtime
drwxr-x--- 2 root named 4096 Jan 22 21:30 named
-rw-r----- 1 root named 1705 Mar 22 2016 named.conf
-rw-r--r-- 1 root named 3923 Jan 22 21:30 named.iscdlv.key
-rw-r----- 1 root named 931 Jun 21 2007 named.rfc1912.zones
-rw-r--r-- 1 root named 1587 May 22 2017 named.root.key
drwxr-x--- 3 root named 4096 Feb 22 18:15 pki
-rw-r--r--. 1 root root 6545 Jun 7 2013 protocols
-rw-r----- 1 root named 77 Feb 22 17:44 rndc.key
-rw-r--r--. 1 root root 670293 Jun 7 2013 services
......
# ls -al /var/named/chroot/var/named
......
total 40
drwxr-x--- 6 root named 4096 Feb 22 18:15 .
drwxr-x--- 5 root named 4096 Feb 22 18:15 ..
drwxr-x--- 7 root named 4096 Feb 22 18:15 chroot
drwxrwx--- 2 named named 4096 Feb 22 18:17 data
drwxrwx--- 2 named named 4096 Feb 22 18:17 dynamic
-rw-r----- 1 root named 2281 May 22 2017 named.ca
-rw-r----- 1 root named 152 Dec 15 2009 named.empty
-rw-r----- 1 root named 152 Jun 21 2007 named.localhost
-rw-r----- 1 root named 168 Dec 15 2009 named.loopback
drwxrwx--- 2 named named 4096 Jan 22 21:30 slaves
......