cloud engineer
How to reinstall the latest kernel and rebuild initramfs.
Find the latest kernel.
rpm -qa kernel
kernel-3.10.0-1160.6.1.el7.x86_64
kernel-3.10.0-1160.11.1.el7.x86_64 |
Remove the kernel first, then reinstall.
yum remove kernel-3.10.0-1160.6.1.el7.x86_64 yum install kernel-3.10.0-1160.6.1.el7.x86_64 |
How to check which kernel is running on your system
uname -sr |
List all kernels installed on the system.
rpm -q kernel |
Removing old kernels using package-cleanup. This keeps 2 kernels on the system.
yum install yum-utils package-cleanup --oldkernels --count=2 |
You can check when the system was last patch using the following.
# check RPM when the last updates were ran. rpm -qa --last | grep kernel # this is a bit of a stretch, but typically a reboot is performed after an upgrade. uptime |