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Managing KernelCare with Puppet

Managing KernelCare with Puppet

Managing KernelCare with Puppet
By guest author Christian Reiß If you haven’t felt it before: when Dirty Cow hit you did. The Linux Kernel is rock solid, proven but also has security issues. In this case: Root rights for everyone! And on top of that this bug is so trivially easy to exploit (several proof-of-concepts are out there that can easily converted into a life, working gun...
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KernelCare, Dirty Cow, systemtap and CentOS/RHEL/CL 5 - Important!!!

The systemtap scripts recommended by RedHat https://bugzilla.redhat.com/show_bug.cgi?id=1384344#c13 and many other people as workaround against CVE-2016-5195 (a.k.a DirtyCow) might be ineffective against new variations of the attack like this one: https://github.com/dirtycow/dirtycow.github.io/blob/master/pokemon.c [correction Oct 22, 7:04am: this ...
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How to use a single key to register multiple KernelCare servers
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How to use a single key to register multiple KernelCare servers

How to use a single key to register multiple KernelCare servers
KernelCare is often deployed on a large number of servers. Adding those servers one by one is a hassle. In that case, KernelCare key can be used to deploy and register multiple servers at once. Registration is still straightforward: $ kcarectl --register YOUR_KEY The key can be obtained from CLN (see image above). The same key can be used for all t...
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KernelCare supports many distributions, but does it work with your kernel?

KernelCare supports many distributions, but does it work with your kernel?

KernelCare supports many distributions, but does it work with your kernel?
We often get a question whether a particular kernel is supported by KernelCare. We support a large number of distributions and kernel versions, such as CentOS/RHEL/CL 5,6 & 7, Debian, Ubuntu, Virtuozzo & Proxmox VE. List of all supported distributions, kernels, as well as patches for them is available at http://patches.kernelcare.com . Yet,...
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Recent Comments
WisiKlo WisiKlo
Please, try now. This has been fixed.
Saturday, 23 April 2016 17:50
WisiKlo WisiKlo
The version you have is 3.16.0.x The earliest we support is 3.16.7 sorry ... Read More
Saturday, 07 May 2016 22:35
WisiKlo WisiKlo
Actually - you are right, it should be supported, let me try/double check.
Saturday, 07 May 2016 22:36
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Debian 7 & 8 kernels patched to latest with KernelCare

Debian 7 & 8 kernels patched to latest with KernelCare

Debian 7 & 8 kernels patched to latest with KernelCare
Debian 7 kernels updated to linux-3.2.73-2+deb7u3 Debian 8 kernels updated to linux-3.16.7-ckt20-1+deb8u4   Systems with AUTO_UPDATE=True (DEFAULT) in /etc/sysconfig/kcare/kcare. conf will automatically update, and no action is needed for them. You can manually update the server by running: # /usr/bin/kcarectl --update Changelog: deb...
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KernelCare prevents from attacks fast - releases patches sometimes even before the native OS updates its kernel
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KernelCare prevents from attacks fast - releases patches sometimes even before the native OS updates its kernel

KernelCare prevents from attacks fast - releases patches sometimes even before the native OS updates its kernel
You might say that KernelCare lags slightly behind the upstream distributions of patches. This, however, is normal, and regardless of the delay, most of the time you will be protected by KernelCare much faster than you would do the reboot yourself. The main cause of such delay is that upstream does not disclose the vulnerability until updated kerne...
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KernelCare fan-base is growing as we reach 50,000 server installs
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KernelCare fan-base is growing as we reach 50,000 server installs

KernelCare fan-base is growing as we reach 50,000 server installs
I cannot say that I am not proud of the fact that our customer install base has grown so substantially. In the past year, KernelCare has more than tripled server installs and is still CloudLinux’s fastest growing product. Companies like Dell and LiquidWeb have deployed KernelCare to keep thousands of their Linux servers secure with all the latest k...
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How to switch from Ksplice to KernelCare in a single step

How to switch from Ksplice to KernelCare in a single step

How to switch from Ksplice to KernelCare in a single step
Ksplice is a technology that updates kernels with important security patches without the need to reboot. After its acquisition by Oracle, it is now offered as part of the Oracle Linux Premier Support. KernelCare  is distribution-agnostic and supports Oracle Linux kernels, as well as CentOS, CloudLinux OS, Debian, RedHat, Virtuozzo, and others....
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Ubuntu LTS kernels patches to latest version with KernelCare

Ubuntu LTS kernels patches to latest version with KernelCare

Ubuntu LTS kernels patches to latest version with KernelCare
  Ubuntu LTS kernels were updated to latest version. The update includes a number of security bug fixes. Systems with AUTO_UPDATE=True (DEFAULT) in /etc/sysconfig/kcare/kcare. conf will automatically update, and no action is needed for them.   You can manually update the server by running: # /usr/bin/kcarectl --update   Changelog: ub...
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Helpdesk backup issue

Helpdesk backup issue

Helpdesk backup issue
Unfortunately due to the backup system failure, we have lost approximately 6 hours of support tickets submits (about 32 tickets) from our helpdesk system. But we have all the information in a form of a backup, so we are currently working on the tickets restoration process, manually re-creating all the relevant tickets. Our apologies for t...
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