Having some issues with dns resolution on my Ubuntu 16.04 droplet with dns.
$ dig google.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com
;; global options: +cmd
;; connection timed out; no servers could be reached
No changes were made to network configuration before I tried to troubleshoot this issue. I’ve tried changing the nameservers in /etc/network/interfaces.d/50-cloud-init.cfg to no avail.
/etc/resolv.conf is empty (except for some comments). If I manually add a nameserver to /etc/resolv.conf, it does work. Of course this doesn’t solve the issue because changes won’t be persisted over reboot.
$ cat /etc/resolv.conf && dig google.com
# 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
nameserver 1.1.1.1
; <<>> DiG 9.10.3-P4-Ubuntu <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39462
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 221 IN A 216.58.195.78
;; Query time: 1 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Sun Sep 29 19:31:00 UTC 2019
;; MSG SIZE rcvd: 55
Anyone have similar issues?
EDIT
50-cloud-init.cfg contents (ip’s redacted):
$ cat /etc/network/interfaces.d/50-cloud-init.cfg
# This file is generated from information provided by
# the datasource. Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
auto lo
iface lo inet loopback
dns-nameservers 67.207.67.3
auto eth0
iface eth0 inet static
address XXX.XXX.XXX.XXX/20
gateway XXX.XXX.XXX.XXX
# control-alias eth0
iface eth0 inet static
address XXX.XXX.XXX.XXX/16
Originally there was a second nameserver defined (next to 67.207.67.3) but I deleted it when messing around and now don’t remember what it was.
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Hello, @joek1010
You can edit ``` /etc/network/interfaces.d/50-cloud-init.cfg
Check that your block looks like this:
Before making any changes, please make sure to create a copy of the file in case the change does not make a difference so you can revert everything back.
The other option will be to edit your interface configuration, which is located in:
/etc/network/interfacesas this is something a lot of people use. I personally have two resolv.conf files in order to prevent any issues with the DNS resolution.Let me know if you have any questions.