If you're encountering the 'GPG check FAILED' error on AlmaLinux 8, this can hinder package installations and updates, causing significant administration challenges. This guide provides a detailed procedure to fix this error by verifying and importing the GPG key, and adjusting SELinux settings appropriately.

Prerequisites

• Access to an AlmaLinux 8 server with root privileges.
• SSH access to the server.

Step 1: Verify RPM Installation

Begin by verifying the RPM installation to check for any discrepancies or issues:

Step 2: Rebuild RPM Database

Rebuild the RPM database to ensure all metadata is correct and up to date:

Step 3: Clean YUM Cache

Clean the YUM cache to remove any cached data from your repositories:

Step 4: Disable GPG Check

Temporarily disable GPG checks by modifying the AlmaLinux repository configuration:

Step 5: Import the AlmaLinux GPG Key

Download and import the AlmaLinux GPG key to ensure the authenticity of the packages:

Step 6: Check SELinux Status

Check the status of SELinux to understand its current enforcement settings:

Step 7: Disable SELinux Enforcement Temporarily

Disable SELinux enforcement temporarily to avoid conflicts during troubleshooting:

By following these steps, you should be able to resolve the 'GPG check FAILED' error on your AlmaLinux 8 server. Remember, it's important to re-enable any settings changed temporarily, such as GPG checks and SELinux enforcement, once the issue is resolved to maintain the security and integrity of your server environment.