kali mint ubuntu locale problem and soluation

I am facing a problem as asked in this question, I have tried the proposed solution but facing the same issue

if you facing locale problem in linux distributions like as shown in below then follow the below  procedure to overcome the problem locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8
When I run locale,
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
When I run
sudo locale-gen en_US.UTF-8
I get this error
sudo: unable to resolve host ubuntu
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
Generating locales...
en_US.UTF-8... /usr/sbin/locale-gen: line 177: warning: setlocale: 
LC_ALL: cannot change locale (en_US.UTF-8)
/usr/sbin/locale-gen: line 243: 
8925 Killed localedef $no_archive -i $input -c -f $charset $locale_alias
$locale failed
Generation complete.
I am running Ubuntu Cloud Image on OpenStack cloud


SOLUTIONS 

The problem is due to this bug. The cloud images only support "en_US.UTF-8" so you have to make sure that the host server (the install of Ubuntu Server which you use to SSH into the cloud install) is configured to use "en_US.UTF-8"
To do this generate the "en_US.UTF-8" on the Ubuntu server install:
$ sudo locale-gen en_US.UTF-8
Generating locales...
  en_US.UTF-8... done
Generation complete.

$ sudo dpkg-reconfigure locales
Generating locales...
  en_US.UTF-8... done
Generation complete.
Use the newly generated locale on the Ubuntu Server install by editing /etc/default/locale to contain only this line:
LANG=en_US.UTF-8
Reboot and then access the cloud install.

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