Kernel
How to properly update kernel in RHEL/CentOS 7/8 Linux
Steps to update kernel properly in production environment with examples. Precautions to be considered before and after you update kernel in RHEL/CentOS 7 and 8
How to protect GRUB2 from booting kernel without password in Linux
Learn to set password to protect grub2 from booting a kernel without password. in rhel 7.To set password and protect grub2 remove unrestricted in menuentry
How to set GRUB2 password using grub2-setpassword (RHEL / CentOS 7)
Steps to set grub2 password using grub2-setpassword for unautorized modification of grub2 entries. Also steps to remove grub2 password from rhel /centos 7