How to do it… Now that we have discussed the basics, we can leave behind all the boring parts and get to the action. It is time to play and learn! One of the first things we can do is determine the currently loaded kernel in our system. The following command will display all kernels […]
Category: Serving up the boot – TFTPD
Playing with Secure Boot 2 – Exploring the Various Boot Options and Kernels in Oracle Linux
How to do it… [ req ]default_bits = 4096distinguished_name = req_distinguished_nameprompt = nostring_mask = utf8onlyx509_extensions = extensions[ req_distinguished_name ]O = Module Signing ExampleCN = Module Signing Example KeyemailAddress = [email protected][ extensions ]basicConstraints=critical,CA:FALSEkeyUsage=digitalSignatureextendedKeyUsage = codeSigningsubjectKeyIdentifier=hashauthorityKeyIdentifier=keyid You should edit the O, CN, and emailAddress fields to be more appropriate. Note that in the extensions section of the […]
Updating the Machine Owner Key database – Exploring the Various Boot Options and Kernels in Oracle Linux
Updating the Machine Owner Key database Machine Owner Key (MOK) is a security feature designed to protect the boot process of a computer system from unauthorized modifications or attacks. It is typically used in systems that support UEFI and Secure Boot, which require all bootloaders and kernel modules to be signed by trusted entities. The […]
Removing the RHCK – Exploring the Various Boot Options and Kernels in Oracle Linux
Removing the RHCK In this recipe, you will learn how to remove RHCK and its unique package dependencies while keeping all of UEK dependencies. Remember that when installing Oracle Linux, the installer automatically installs the Oracle UEK as the default kernel, but you can install RHCK for compatibility purposes. Getting ready Old versions of Oracle […]
What you need to know about local filesystems – Creating and Managing Single-Instance Filesystems
What you need to know about local filesystems This recipe will discuss the differences between local and remote filesystems, as well as the core differences between Btrfs and ZFS. The backbone of an operating system (OS) is the local filesystem. It enables efficient storage and management of files and directories on a computer or server […]