DNF or yum output error "Failed to set locale, defaulting to C.UTF-8" on RHEL 8

Solution Verified - Updated -

Issue

  • dnf or yum commands works, but it shows the following errors in English environments:

    # 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

# yum update
Failed to set locale, defaulting to C.UTF-8

# dnf update
Failed to set locale, defaulting to C.UTF-8

Environment

  • Red Hat Enterprise Linux
    • 8.x

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