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kernel Blogs

Solutions for ‘error 15 file not found’ in CentOS servers

Kernel updates are vital for security and feature additions. But if not performed with caution, these updates can render your server unavailable or down.

In our role as Outsourced Tech Support services for web hosts, kernel updates are a commonly performed task in servers.

Today, we’ll discuss the error ‘Error 15: File not Found’ that occurs in CentOS servers when trying to boot after changes in grub.


4-point checklist to update Centos 6 kernel with minimal server downtime

In our Server administration services, we perform a wide range of tasks from server hardening to service optimization. Kernel updates are vital in our services, especially in scenarios where a vulnerability or exploit make the servers susceptible to hacks.

We perform kernel updates in all Linux flavours, and the procedure varies with the type of the OS installed in the server and its version. If not done with proper planning and caution, a kernel update can mess up with your server.


How to fix Magento dirty cow vulnerability alert!

How to fix Magento dirty cow vulnerability alert!

Are you a website owner? Do you have Magento shopping cart in your site? Is your server running an insecure version of Linux kernel?

If the answers to these questions are ‘yes’, then you’d be noticing a ‘Dirty COW vulnerability’ alert in your Magento admin dashboard. (more…)

Welcome Linux 3.0

Not every day would a Linux lover celebrate, but here is a moment of celebration marked by a Kernel release. Lets say Good Bye to the 2.6 series of kernel, and join this milestone achievement’s celebrations…

Linux is now 20 years old, and the move to the 3.0 kernel is just another way to mark the presence. The role of Linux in the world of hosting is enormous, as each Linux enthusiast would feel special of this moment. (more…)

Linux kernel vulnerability CVE-2010-4249

A vulnerability in Linux kernels prior to 2.6.37-rc3-next-20101125 allows a local user to cause a denial of service attack on your server. So this is a good time to cross check the level of access you’ve granted to the users on your server. If you’ve recently been experiencing high loads and server crashes, with no apparent network activity, you could be among one of the very few victims of this attack


64bit kernel exploit – Update

All major distributions have already released updates to their kernels which you can easily update using the corresponding package management system of your distribution. More about the fix and workaround after the jump.