Updating kernel with yum
The kernel is the core of the operating system, and runs the CPU, manages system memory, controls access to disk drives, and contains device drivers that enable you to interact with the system and use the hardware and peripherals attached to the computer.
Naturally, kernel update appeals most system administrators who are responsible for wringing the most performance and benefit out of their existing hardware and software.
ELRepo to update the kernel in RHEL/Cent OS 7 as by default Redhat/Cent OS don’t allow to update the kernel version.
ELRepo is a community which creates updated stable kernel, Hardware Firmware’s and drivers ( for eg: Graphic Card, LAN Card, Sound Card.) and other packages.
For Droplets that use the in-control panel legacy system, a special kernel called Digital Ocean Grub Loader is now available and recommended.The kernel version numbering system is easy to understand.Kernel versions are numbered using the format , 5 in the examples shown in the previous section, changes much more often as new features are added to the kernel, such as new file systems, as major subsystems undergo significant remodeling, as significant bugs are fixed, or as security patches are incorporated into the source code.Digital Ocean uses two different methods of managing kernels depending on the operating system and when the Droplet was created.In the past, kernels for Digital Ocean Droplets were managed of the Droplets themselves inside the Digital Ocean control panel.