我一段时间以来遇到的一个奇怪的问题:
很多时候,虽然不是一直如此,当我启动我的 Ubuntu 17.04 机器时,我无法浏览以色列网站(我自己在以色列)。co.il TLD 中的任何主机名都无法被浏览器和其他应用程序(如 ping)解析,而 dig/nslookup 可以完美解析它们。
通常(但并非总是)解决问题的方法是将 Google DNS 服务器添加到 /etc/resolv.conf。
我昨天已将这些名称服务器添加到 /etc/resolvconf/resolv.conf.d/,这样我就不必每次都手动添加它们,但今天我启动了 Ubuntu,.co.il 域名无法解析。
一些可能感兴趣的命令和文件:
$ ping google.co.il
ping: google.co.il: Name or service not known
,
$ dig google.co.il
; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.co.il
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59430
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;google.co.il. IN A
;; ANSWER SECTION:
google.co.il. 299 IN A 216.58.205.227
;; Query time: 78 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sat Aug 12 11:27:04 IDT 2017
;; MSG SIZE rcvd: 57
,
$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 127.0.0.53
,
$ cat /etc/nsswitch.conf
# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.
passwd: compat
group: compat
shadow: compat
gshadow: files
hosts: files mdns4_minimal [NOTFOUND=return] resolve [!UNAVAIL=return] dns
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
,
$ systemd-resolve --status
Global
DNS Servers: 8.8.8.8
8.8.4.4
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test
Link 2 (enp3s0)
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: allow-downgrade
DNSSEC supported: yes
DNS Servers: 10.0.0.138
DNS Domain: Home
这会是什么呢?
谢谢。