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Ubuntu(Bionic)のDNS設定

Last updated at Posted at 2018-02-27

ubuntu 1804のDNS設定がまた変わってたみたいで、ハマりましたのでメモ。

DNSの設定をGoogle(8.8.8.8)に固定する方法

/etc/systemd/resolved.conf

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See resolved.conf(5) for details

[Resolve]
DNS=8.8.8.8
#FallbackDNS=
#Domains=
#LLMNR=no
#MulticastDNS=no
#DNSSEC=no
#Cache=yes
#DNSStubListener=udp

search=hoge.co.jp #searchはデフォルトでは書いてませんが、手動で書いてあげれば検索してくれるようです。(20180801追記)

DNS=がコメントアウトされてますので、上記のようにすればOK。

設定の適用

systemctl restart systemd-resolved

確認は下記でできる様子です。

systemd-resolve --status
cat /var/run/systemd/resolve/resolv.conf

これでできたっぽい。

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