[root@ora12ee01 named]# cat /var/named/data/named_stats.txt
+++ Statistics Dump +++ (1547918042)
++ Incoming Requests ++
++ Incoming Queries ++
++ Outgoing Queries ++
[View: default]
[View: _bind]
++ Name Server Statistics ++
++ Zone Maintenance Statistics ++
++ Resolver Statistics ++
[Common]
[View: default]
[View: _bind]
++ Cache DB RRsets ++
[View: default]
[View: _bind (Cache: _bind)]
++ Socket I/O Statistics ++
2 UDP/IPv4 sockets opened
3 TCP/IPv4 sockets opened
1 Raw sockets opened
1 TCP/IPv4 sockets closed
2 TCP/IPv4 connections accepted
++ Per Zone Query Statistics ++
--- Statistics Dump --- (1547918042)
※ほかにもいろいろある
＞停止
[root@ora12ee01 named]# rndc stop
＞起動はできない
[root@ora12ee01 named]# rndc reload
rndc: connect failed: 127.0.0.1#953: connection refused
＞起動
[root@ora12ee01 named]# systemctl start named
＞統計情報出力
[root@ora12ee01 named]# rndc stats
＞リロード Reload configuration file and zones.
[root@ora12ee01 named]# rndc reload
server reload successful
＞状態
[root@ora12ee01 named]# rndc status
version: 9.9.4-RedHat-9.9.4-72.el7 (DNS) <id:8f9657aa>
CPUs found: 1
worker threads: 1
UDP listeners per interface: 1
number of zones: 102
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running
●設定
＜変更＞
# vi /etc/named.conf
# listen-on port 53 { 127.0.0.1; };
listen-on port 53 { 127.0.0.1; 192.168.100.111; };
# allow-query { localhost; };
allow-query { localhost; 192.168.100.112; };
＜追加＞
version "DNS";
zone "oradomain" IN {
type master;
file "oradomain.zone";
};
controls {
inet 127.0.0.1 allow { localhost; } keys { rndckey; };
};
include "/etc/rndc.key";
# rndc-confgen -a -b 512 -k rndckey
# cat /etc/rndc.key
key "rndckey" {
algorithm hmac-md5;
secret "/6Zk6KV9+PPd+lPBr1MgdY29GRgF1YVSG0yavAqVVaqKKex/U4fDPaT1ox8tDdR7Qzy5PA2EM0oujHKziZpvwg==";
};
# vi /var/named/oradomain.zone
# cat oradomain.zone
$ORIGIN oradomain.
$TTL 86400
@ IN SOA ns.oradomain. root.oradomain. (
2003031401 ; Serial
3600 ; Refresh
900 ; Retry
604800 ; Expire
3600 ) ; Negative cache TTL
@ IN NS ns.oradomain.
@ IN MX 10 mx.oradomain.
ns.oradomain. IN A 192.168.100.111
mx.oradomain. IN A 192.168.100.111
www.oradomain. IN A 192.168.100.112
●設定のチェック
# named-checkconf -z /etc/named.conf
●ゾーンファイルのチェック
# named-checkzone -w /var/named oradomain oradomain.zone
●rndcコマンド
[root@ora12ee02 ~]# vi /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifcfg-rh
dns=none <- NetworkManagerが自動変更しない設定を追加
[root@ora12ee02 ~]# vi /etc/resolv.conf
[root@ora12ee02 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search Planex oradomain
nameserver 192.168.100.111
nameserver 192.168.0.1
[root@ora12ee02 ~]# dig www.oradomain
●192.168.100.112からテスト
; <<>> DiG 9.9.4-RedHat-9.9.4-37.el7 <<>> www.oradomain
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52293
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.oradomain. IN A
;; ANSWER SECTION:
www.oradomain. 86400 IN A 192.168.100.112
;; AUTHORITY SECTION:
oradomain. 86400 IN NS ns.oradomain.
;; ADDITIONAL SECTION:
ns.oradomain. 86400 IN A 192.168.100.111
;; Query time: 0 msec
;; SERVER: 192.168.100.111#53(192.168.100.111)
;; WHEN: 日 1月 20 01:59:20 JST 2019
;; MSG SIZE rcvd: 91
●バージョン隠ぺい確認
[root@ora12ee02 ~]# dig @ora12ee011.oradomain chaos txt version.bind
; <<>> DiG 9.9.4-RedHat-9.9.4-37.el7 <<>> @ora12ee011.oradomain chaos txt version.bind
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37787
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;version.bind. CH TXT
;; ANSWER SECTION:
version.bind. 0 CH TXT "DNS"
;; AUTHORITY SECTION:
version.bind. 0 CH NS version.bind.
;; Query time: 0 msec
;; SERVER: 192.168.100.111#53(192.168.100.111)
;; WHEN: 日 1月 20 17:11:31 JST 2019
;; MSG SIZE rcvd: 71