Sudo: unable to resolve host

1 문제상황

ubuntu@ip-172-31-46-180:~$ sudo true
ubuntu@ip-172-31-46-180:~$ sudo hostnamectl set-hostname example
ubuntu@ip-172-31-46-180:~$ sudo true
sudo: unable to resolve host example
ubuntu@ip-172-31-46-180:~$

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3 참고

• https://askubuntu.com/questions/59458/error-message-sudo-unable-to-resolve-host-user?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa