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Upgrading kernel version
Giedrius
Administrator
Our VPS has a possibility of upgrading kernel version which is one of the most common reasons why some of the customers chooses the Linux VPS over the Container VPS. Higher version of kernel is required by some of the applications or services.
By default does not have the latest kernel version available so this article might help to resolve the case. We will provide the details on how to manually change your kernel version.
First, it is always good to know, what is the current version of your kernel, you can check that with the following command:
Linux 4.14.0-041400-generic
Kernel upgrade for Ubuntu
Secondly, you need to download the required files for your chosen kernel version. All the available kernel versions can be found in this page:
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Source provides all the required files for kernel to upgrade. Once you check the specific version of Kernel you may see many links to download, for example:
The first one is required, and then you need the rest of 2, which both has to match for example: both generic or both lowlatency.
You download all the files for example:
Kernel upgrade for CentOS
We will be using ELRepo, a third-party repository that makes the upgrade to a recent version a kernel. To enable these repository you will need to execute the following commands:
We will choose the main kernel package: kernel-ml (it is not shown in the image above since we installed it already). To upgrade your Kernel to the latest version use the following command:
By default does not have the latest kernel version available so this article might help to resolve the case. We will provide the details on how to manually change your kernel version.
First, it is always good to know, what is the current version of your kernel, you can check that with the following command:
uname -srThe outcome should be simple and specific:
Linux 4.14.0-041400-generic
Kernel upgrade for Ubuntu
Secondly, you need to download the required files for your chosen kernel version. All the available kernel versions can be found in this page:
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Source provides all the required files for kernel to upgrade. Once you check the specific version of Kernel you may see many links to download, for example:
Build for amd64 succeeded (see BUILD.LOG.amd64):
linux-headers-4.13.0-041300_4.13.0-041300.201709031731_all.deb
linux-headers-4.13.0-041300-generic_4.13.0-041300.201709031731_amd64.deb
linux-headers-4.13.0-041300-lowlatency_4.13.0-041300.201709031731_amd64.deb
linux-image-4.13.0-041300-generic_4.13.0-041300.201709031731_amd64.deb
linux-image-4.13.0-041300-lowlatency_4.13.0-041300.201709031731_amd64.deb
The first one is required, and then you need the rest of 2, which both has to match for example: both generic or both lowlatency.
You download all the files for example:
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-headers-4.14.0-041400-generic_4.14.0-041400.201711122031_amd64.debOnce the download is complete you need to install it with the following command:
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-image-4.14.0-041400-generic_4.14.0-041400.201711122031_amd64.deb
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-headers-4.14.0-041400_4.14.0-041400.201711122031_all.deb
dpkg -i *.debIt may take up to few minutes, but once it is done you have to reboot the system for changes to become active:
rebootAfter reboot you may check and make sure the kernel version is upgraded:
uname -srThat is it. Your Kernel version is upgraded for your Ubuntu system.
Kernel upgrade for CentOS
We will be using ELRepo, a third-party repository that makes the upgrade to a recent version a kernel. To enable these repository you will need to execute the following commands:
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpmOnce you install the repositories, you will need to list the available packages:
yum --disablerepo="*" --enablerepo="elrepo-kernel" list availableYou will be presented will all the available packages, like this:
We will choose the main kernel package: kernel-ml (it is not shown in the image above since we installed it already). To upgrade your Kernel to the latest version use the following command:
yum --enablerepo=elrepo-kernel install kernel-mlAfter the upgrade reboot the server:
rebootCheck the kernel version again:
uname -srKernel version may not be changed instantly, so you will have to do the last changes and set default Kernel version in GRUB. Open a GRUB configuration:
nano /etc/default/grubYou will have to change one line as in the example below and save it:
GRUB_DEFAULT=0The following command will recreate the Kernel configuration within GRUB:
grub2-mkconfig -o /boot/grub2/grub.cfgOne final reboot is need after this, and your Kernel version will be changed.
foot
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Comments
or something similar?
It is more safe, isn't it?
in general your suggested option upgrades the kernel version to the newest version. While our suggested option lets you to download files for specific kernel version if needed.
Also, here is more information about apt-dist update, which actually not only upgrade kernel version but does more, which is some cases is not needed:
http://manpages.ubuntu.com/manpages/zesty/en/man8/apt-get.8.html
We believe our option is safer because it is only upgrading kernel and not other packages as well.
Also then tried to do what fedotovs suggested, kernel is still in 2.6.
After that tried to install kernel manually, there was no errors, but after reboot kernel version is still 2.6.
here is the errors that I was getting when have followed this guide just after reinstalling OS.
Not being able to run new Kernel, prevents me from being able to use Docker for my containers.
Why not just allow to choose kernel as you allow to choose OS to install on control panel?
it seems you have a standard VPS, which runs on OpenVZ virtualization. It uses the latest stable kernel for this virtualization - 2.6.32 and it can't be upgraded. Therefore, Docker is not supported in our Standard VPS.
I would suggest you look into our KVM VPS, which allows kernel upgrade and supports Docker:
https://www.time4vps.com/linux-vps/
Thanks, will try KVM.
Giedrius said: