This error generally occurs when, you launched an instance in Virtual Private Network on Amazon Web Services. Whenever you use sudo with any command, you will get something like this:
<host_ip> will be in the format ip-xx-xx-xx-xx.
To solve this error, you just need to edit your /etc/hosts file. For it, open the file in your favorite editor. Here I am using vim.
Now, add the following stuff in the opened file:
Save the file. And restart the instance (if necessary). You are done!
sudo: unable to resolve host <host_ip>
<host_ip> will be in the format ip-xx-xx-xx-xx.
To solve this error, you just need to edit your /etc/hosts file. For it, open the file in your favorite editor. Here I am using vim.
sudo vim /etc/hosts
Now, add the following stuff in the opened file:
127.0.0.1 localhost.localdomain localhost
127.0.1.1 <host_ip>
Save the file. And restart the instance (if necessary). You are done!
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