A short description of how to enable root login over SSH in Linux.
Source: 5.2.2. Enable root login over SSH Red Hat Enterprise Linux 6 | Red Hat Customer Portal
Category: Linux
A simple article on how to load 100% CPU load in Linux.
First step is to identify the number of cores.
Run the command “yes > /dev/null &” for N times. N denotes the number of processors identified via “cat /proc/cpuinfo” command. 2N is one better number.
MOK Architecture. The keys added via mokutil via any Linux OS, will be stored in the MOK database. Since its a boot service variable, it will be stored in the BIOS NVRAM. On next boot the shim layer will prompt for enrolling the key. Once enrolled the key can be used to validate the respective async drivers (not part of OS distribution) by kernel to allow installing them during OS boot or run time.
Source: Machine Owner Key (MOK) – Understanding the UEFI Secure Boot Chain
Nice high level article on swap files. How to find the allocated swap file size, location, allocate new swap file for increasing or decreasing the swap file size, adjust the swappiness and remove a swap file.
Linux 5.14 updates
removed the old IDE support.
Support for Rust programming language
mainline support for Raspbery pi 400
NVMeTCP optimizations.
Source: Linux kernel sheds legacy IDE support, but driver-dominated 5.14 rc1 still grows • The Register
Some cases you may have to disable the AHCI driver claiming the software device. You can use any one of the below options to blacklist the AHCI driver. This depends on the kernel version you use.
ahci.blacklist=yes
modprobe.blacklist=ahci
rdblacklist=ahciHow to configure nic or netwok bonding in CentOS 7 & RHEL 7
Source: Configure NIC(Network Interface Card) bonding in CentOS 7 / RHEL 7