Tuesday , 19 June 2018
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What is kernelCare?

An intro to KernelCare technology

KernelCare is  a live patching service which help admins to install all security patches and bugfixes without rebooting the sever.  Once installed in the server KernelCare agent will continuously check for patches available for currently running kernel. Once a patches available KernelCare agent will download it and install it in the server.

What are the features of kernelCare?

  1. No server downtime as patches are applied without server reboot.
  2. Automatically checks for patches every four hours and install it.
  3. Rollback without reboot
  4. Also supports virtual server environments.

How to install kernelCare?

The installation of KernelCare is pretty simple. Here I’m going to explain the full installation steps. KernelCare is compatible with following versions of 64 bit OS kernels:

RHEL/CentOS 5.x, 6.x , 7.x, CloudLinux 5.x, 6.x, Virtuozzo/PCS/OpenVZ 2.6.32, Debian 6.x, 7.x and Ubuntu 14.04

List of kernels supported by kernelCare is available in the below link:

Please click on this link to see all supported kernel details.

Steps to install KernelCare on RPM based systems like centos and redhat:

$ rpm -i https://downloads.kernelcare.com/kernelcare-latest.x86_64.rpm

Steps to install KernelCare on Debian based system, run:

$ wget https://downloads.kernelcare.com/kernelcare-latest.deb
$ dpkg -i kernelcare-latest.deb

If you are using IP based license, nothing to be done. If it is  key based license run the below command:

$ /usr/bin/kcarectl --register KEY

How to check the patches applied by KernelCare?

Use the below command to check the applied patches:

$ /usr/bin/kcarectl --info

How to manually check for new patches in KernelCare?

Even the patches are applied automatically,  you can use the below command to run the update manually.

/usr/bin/kcarectl –update

If you want to buy KernelCare. Please follow the below link:

https://www.cloudlinux.com/kernelcare-pricing

You have questions? Need SysAdmin help? We are ready to help you round the clock!! Click Here for instant tech support.

About Harikrishnan M

Working as Senior System Administrator at Twinbeeservers.

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