Some default OS is not install with english language pack and end up with following error:
Failed to set locale, defaulting to C.UTF-8
This usually seen in CentOS 8, RockyLinux 9.
How to resolve:
1) yum install -y glibc-langpack-en
2) localectl set-locale LANG=en_US.UTF-8
and verify after complete above steps.
[root@demo ~]# localectl
System Locale: LANG=en_US.UTF-8
VC Keymap: us
X11 Layout: us
