Bloggers
Igor Seletskiy

Igor Seletskiy

CloudLinux is on a mission to make Linux secure, stable, and profitable, and Igor Seletskiy is at the helm of this undertaking. He is the CEO and founder of the company, and an innovator responsible for the strategic direction of the company and all products within the CloudLinux brand.

Igor is an accomplished technology guru focusing on Linux, kernel development, and the hosting industry. He is a frequent speaker at industry events, and has a successful track record of more than 15 years of delivering innovative products to market.

Igor Seletskiy's articles

by / Friday, 24 June 2016
PHP 5.3? CVE 2015-6835 ... what a mess
Even though PHP 5.3 & 5.4 are still considered supported on CentOS -- sometimes it takes forever for CentOS/RHEL to fix a bug in there. CVE 2015-6835 is a perfect example. This particular bug came out of nowhere (well, people knew it was a bug, but they didn’t realize it was a huge security...

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Topic: in CloudLinux OS Blog


by / Tuesday, 14 June 2016
Hackers are using local DoS attack using CVE-2016-4581 against hosting provider

Distributions have yet to patch CVE-2016-4581 in CentOS/RHEL/CloudLinux 7 kernels. At the same time, the vulnerability is already known to be used in attacks against hosting providers to crash servers. We are working hard to release new CloudLinux 7 kernel that fixes this bug. 

Yet, if you want...

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Topic: in KernelCare Blog CloudLinux OS Blog


by / Thursday, 09 June 2016
What matters in hosting this year? WHD.USA reveals

Did you make it to the WHD.USA event this year? If not, no worries. We'll gladly share some key notes and impressions of one of the brightest events of the hosting industry with you.

The hosting business has seen significant changes over the last several years, in terms of new technologies...

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Topic: in CloudLinux OS Blog


by / Monday, 23 May 2016
How to reduce downtime of managed servers - Liquid Web knows

Liquid Web rolls out KernelCare to 20K managed servers

Liquid Web is one of the most well-respected companies in web hosting. Their 30,000+ customers rely on Liquid Web’s deep technical expertise and a variety of high-performance servers and hosting products. Rolling out KernelCare to 20,000...

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Topic: in KernelCare Blog


by / Friday, 20 May 2016
8 fabulous feature improvements in the works for CloudLinux OS

As always, our team is working diligently on enhancing CloudLinux OS, so we’ve decided to share with you a list of features we are paying special attention to for the remainder of 2016:

  • LVE Stats 2 - there is going to be a substantial improvement in a way we track usage. It should make it...

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Topic: in CloudLinux OS Blog


by / Thursday, 19 May 2016
What’s inside HardenedPHP and why it matters for server security

It’s been more than a year since we started our HardenedPHP project. The idea came out of discussions with multiple hosters who expressed their worry about running outdated versions of PHP. While their servers were secured with CageFS, they were still worried that hackers could have a field...

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Topic: in CloudLinux OS Blog


by / Wednesday, 18 May 2016
Ubuntu LTS 16.04 includes livepatch - now what?

Livepatch, a technology to apply patches to a running kernel, has been available for some time. Now Ubuntu LTS 16.04 became the first major Linux distribution to enable it in their kernel.

We’ve been asked what this really means, and does it make KernelCare obsolete? The answer is: not at...

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Topic: in KernelCare Blog


by / Monday, 25 April 2016
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...

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Topic: in KernelCare Blog


by / Thursday, 21 April 2016
HardenedPHP - another day, another security fix

Older versions of PHP are like swiss cheese - they are full of holes. More and more known holes appear with every passing day for PHP version 5.4 and older … holes that no one patches. This is where HardenedPHP comes in - it patches those holes so that your servers can remain secure.

On Mar...

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Topic: in CloudLinux OS Blog


by / Thursday, 21 April 2016
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...

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Topic: in KernelCare Blog


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