ServerBuddies Support Blog

How to Ensure Red Hat GPG Key is Installed.

To ensure that the system can cryptographically verify update packages (and also connect to the Red Hat Network to receive them if desired), run the following command to ensure that the system has the Red Hat GPG key properly installed:

Example below shows on a Centos Server.

The command should return the string: gpg(Red Hat, Inc. (release key ) for redhat systems.

How can I backup a currently installed RPM

–repackage Re-package the files before erasing.

The previously installed package will be named according to the macro %_repackage_name_fmt and will be created in the directory named by the macro %_repackage_dir (default value is /var/spool/repackage).

–replacefiles

Install the packages even if they replace files from other, already installed, packages.

–replacepkgs

Install the packages even if some of them are already installed on this system.

Once the package has been downloaded, install it with the –repackage option.

This will create an RPM from the existing package and install the new one.

Verifying Installed Packages

Over the course of a system’s normal usage, files get changed. This could be as innocent as simply changing a configuration file in the /etc directory or as problematic as a file being corrupted by a power failure. To assist in the detection of these changes, RPM allows users and administrators to verify the integrity of an installed package.

The command

or

Will verify all installed packages. RPM then computes the MD5 checksum of all files on the disk and compares them to the stored MD5 sums from the original RPMs. The output of the command is a line indicating any files that differ from the versions that were originally installed and a code indicating how the file has changed.

Make sure you do not install services such as Apache, PHP, MySQL, Ftp, Sendmail, etc., as this is done by DirectAdmin. All that is needed is a CLEAN install of the operating system.

DirectAdmin Control Panel Software