Updating centos kernel

At step 4, we've already installed a new kernel 5. Now, I will show you how to configure the default kernel version to load when the system is starting. Now we want to configure the default kernel that will run when the system is starting. We will use kernel 5. Kernel 5. When you want to back to the old kernel, you can change the value of the grub2-set-default command to 1. This is an optional step that is useful to get more free space.

In this step, I will show you how to remove an old kernel from your CentOS 7 system. This should be done when you have a more than 3 or 5 kernel versions installed on the server. That means you've only 2 or 3 Kernel versions installed. If you have more than 3 versions installed, the command will automatically remove the old kernel from your system. By default, CentOS 7 uses an old version of kernel, which is 3. In this article I will show you how to update the kernel of CentOS 7. To do that, run the following command:.

No path or device is specified. The epel link for the 7. If you try that link, it now contains a redirect which will not be followed by the rpm command. Instead use:. Thanks Muhammad Arul for the tutorial. It helps me a lot. And thanks Trevor Getty for your actualization, it was very usefull too. What to do if newly installed kernel not letting me log in on the server, what about if newly installed kernel stuck on reboot.

I previously had success with this process but this week it is giving me the same problem as Arvind above. Same base image as previously, even using the same kernel as last time causes me to be unable to ssh after the final reboot.

I just installed kernel from ElRepo. It is LT version. Everything works? One thing annoys me - every time kernel 3. Any chance to tell GRUB to use most recent kernel 4? Better to not provide the specific version number minor release of an Elrepo. Note it isn't 7. Hi, If I were to be completely sure that I no longer have to use the old version 3 or 4 kernels, we can remove them all and leave only the lasts 5 releases?

This feature is only available to subscribers. But the shipped Kernel may not be the the latest one. You need to upgrade the whole operating system to move to another major version of Linux Kernel if your current version is not the updated one. Install ELRepo using the following command;. But the Main-Line kernel based on latest stable release of Linux Kernel 5.

Search the elrepo-kernel channel to list down the kernel-ml related packages. Install the kernel-ml package by using the following command. You can also install any other kernel-ml package according to your requirement. Save my name, email, and website in this browser for the next time I comment.

Now let us try to perform the same task using yum command. With yum you can either use " yum install " or " yum update " to update kernel, either way yum will understand that you are trying to update kernel hence it will perform "install" action.

Hence the older kernel will not be removed while the newer one will still be installed. Next let us try to install the new kernel. For the sake of this example I will update kernel and all other relative packages. Now our task of update kernel was successful. We can verify the same using below command.

As you see now we have two versions of kernel rpm installed. If you have installed multiple version of kernel then you can also switch between different kernel version to change the boot order in RHEL 7 and RHEL 8 both. Now since we know our system has installed successfully with newer kernel, so now we can safely remove the old kernel if required or you can plan to keep it.

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