dig命令安裝和常用命令

1、安裝方法

yum install bind-utils

2、常用命令

2.1 直接dig域名，根據自身網絡的dns獲取域名解析信息

root@basic harbor]# dig www.mikezhu.tech

; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.2 <<>> www.mikezhu.tech
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33969
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.mikezhu.tech. IN A

;; ANSWER SECTION:
www.mikezhu.tech. 600 IN A 192.168.137.10

;; Query time: 347 msec
;; SERVER: 202.96.209.133#53(202.96.209.133)
;; WHEN: Mon Aug 05 10:39:59 CST 2019
;; MSG SIZE rcvd: 61

[root@basic harbor]#

2.2 dig @serverip 指定dns服務器進行解析

[root@basic harbor]# dig @8.8.8.8 www.mikezhu.tech

; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.2 <<>> @8.8.8.8 www.mikezhu.tech
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57221
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.mikezhu.tech. IN A

;; ANSWER SECTION:
www.mikezhu.tech. 599 IN A 192.168.137.10

;; Query time: 87 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Aug 05 10:41:48 CST 2019
;; MSG SIZE rcvd: 61

[root@basic harbor]#

後續命令待續