#Update linux kernel install#
#Update linux kernel update#
#Update linux kernel Patch#
#Update linux kernel upgrade#

parameter default=0 says the system needs to be booted from the very first kernel defined below. This gives new kernel priority to boot when you reboot the system.

Now, if you observe, /boot/grub/nf your newly installed kernel entry is added before your old kernel entry.

#Update linux kernel upgrade#

RHEL7 kernel package upgrade dependencies: dracut, dracut-network, dracut-config-rescue RHEL6 kernel package upgrade dependencies: kernel-firmware RHEL5 kernel package upgrade dependencies: kernel-PAE, kernel-xen RHEL4 kernel package upgrade dependencies: kernel-smp, kernel-largesmp, kernel-hugemem Here is the list of dependencies depending on your RHEL version :

#Update linux kernel install#

If you are opting to install from rpm you need to download all dependencies as well. If you observe, yum resolved dependencies too.

#Update linux kernel update#

If you are on a test system and don’t mind wiping out old kernel then you can directly use yum update kernel or rpm -Uvh command and update kernel. Kernel-firmware noarch 2.6.32-696.20.1.el6 rhui-REGION-rhel-server-releases 29 M

> Package dracut.noarch 0:004-409.el6_8.2 will be an update

> Package dracut.noarch 0:004-336.el6_5.2 will be updated > Package dracut-kernel.noarch 0:004-409.el6_8.2 will be an update > Package dracut-kernel.noarch 0:004-336.el6_5.2 will be updated Loaded plugins: amazon-id, rhui-lb, security To install the latest kernel, use rpm -ivh or yum install kernel # yum install kernel

Always install a new kernel package so that your old kernel still resides on the server and you can boot it if your server/application is not behaving well with the new kernel. Never replace the existing kernel by updating the package. If you do not have/want yum configurations, you can download the latest kernel and its dependencies from the Red Hat portal and keep it ready on the server for installation. Make sure you have yum configured properly to receive the latest packages from trusted repositories. Patching kernel is Linux is the same as upgrading to the latest kernel.

#Update linux kernel Patch#

We will patch it to the latest one in this article. You can see in the above output our RHEL6 system has 2014 (almost 4 years old) patched kernel. r switch gives you your current kernel version.