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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
Topic in: KernelCare News

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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Igor Seletskiy
Hosting Industry Survey is now closed. Stand by for results.
Tags:
News
Topic in: CloudLinux OS Blog

Hosting Industry Survey is now closed. Stand by for results.

Hosting Industry Survey is now closed. Stand by for results.
Update: Hosting Industry Survey results can be found here. This survey closed on Friday, September 9th. Once we compile all data, we will share the results of this survey with all respondents. Thanks! Igor 
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Igor Seletskiy
No single website can bring down your server
Tags:
LVE limits Apache RLimits
Topic in: CloudLinux OS Blog

No single website can bring down your server

No single website can bring down your server

Learn the difference between LVE limits & Apache RLimits What makes both shared hosting provider and its customers happy? Stable servers, of course! The problem is that even a single site can easily bring the servers to a halt by consuming its CPU, memory, and IO resources. The best way to improve your server stability is to limit and partition...
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Recent Comments
Guest — Amir Tal
this is not even remotely true... i am using cloudlinux for a few years. mind you, i'm only using cloudlinux since my application... Read More
Sunday, 22 April 2018 13:51
Igor Seletskiy
I am really sorry about your experience. Yet, we don't control CloudLinux implementation on Odin. While integration for cPanel and... Read More
Sunday, 22 April 2018 16:49
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Igor Seletskiy
Running InfiniBand hardware? Your servers might be vulnerable.
Topic in: KernelCare Blog

Running InfiniBand hardware? Your servers might be vulnerable.

Running InfiniBand hardware? Your servers might be vulnerable.
Recently a flaw was found in Linux kernel 2.6.32 that allows local users to escalate their privileges for servers with InfiniBand.  If your servers have InfiniBand and you are running CentOS/RedHat/CloudLinux 6, Virtuozzo/OpenVZ, Proxmox 2.x WITHOUT KernelCare, you are vulnerable. We recommend you update and reboot your kernels to resolve...
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Igor Seletskiy
New Snapshot feature improvement coming to cPanel users
Tags:
lve-stats cPanel FEATURE UPDATE
Topic in: CloudLinux OS Blog

New Snapshot feature improvement coming to cPanel users

New Snapshot feature improvement coming to cPanel users
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This week users will see an enhancement to the CPU and Concurrent Connection section in cPanel: HTTP Snapshots. In addition to Process Lists and Database Queries Snapshots already released in the beta repo, Snapshots of HTTP queries in the Apache web server becomes available as part of the beta release of lve-stats 2. CloudLinux OS new Apache modul...
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Recent Comments
Guest — George Tasioulis
Kudos for all the new features! Does this (or will this) also work with mod_lsapi?
Wednesday, 29 June 2016 21:08
WisiKlo WisiKlo
This works out of the box with mod_lsapi.
Wednesday, 29 June 2016 21:10
Guest — Stéphan Schamp
When is this coming to Plesk?
Thursday, 30 June 2016 07:25
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Igor Seletskiy
New vulnerability makes it easy to escape from the container
Tags:
docker lxc openvz virtuozzo
Topic in: KernelCare Blog

New vulnerability makes it easy to escape from the container

New vulnerability makes it easy to escape from the container
CVE-2016-4997 and CVE-2016-4998 were issued for a vulnerability that lets user inside container to escalate priveleges and escape the containment. The issue affects Virtuozzo, OpenVZ, LXC and Docker containers. If you are running KernelCare -- your servers are already patched, and safe. If you have yet to deploy KernelCare -- please, make sure...
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Recent Comments
Guest — Troy
I just decided to try kernelcare yesterday. Problem is, CloudLinux hasn't released an official kernel for some time now for versio... Read More
Monday, 27 June 2016 17:23
Guest — Maxim
Roll back to Stable kernel. Install kernelcare and use it for safe.
Monday, 27 June 2016 18:03
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  2 Comments
Igor Seletskiy
PHP 5.3? CVE 2015-6835 ... what a mess
Tags:
HardenedPHP
Topic in: CloudLinux OS Blog

PHP 5.3? CVE 2015-6835 ... what a mess

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 hole). Yet, once they did… it took days for the l...
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Igor Seletskiy
Hackers are using local DoS attack using CVE-2016-4581 against hosting provider
Tags:
CloudLinux OS 7
Topic in: CloudLinux OS Blog Topic in: KernelCare Blog

Hackers are using local DoS attack using CVE-2016-4581 against hosting provider

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 to be protected now, the fix is already avai...
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Igor Seletskiy
What matters in hosting this year? WHD.USA reveals
Tags:
Event
Topic in: CloudLinux OS Blog

What matters in hosting this year? WHD.USA reveals

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 competitive threats and user purchasing trends. The key tre...
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Igor Seletskiy
How to reduce downtime of managed servers - Liquid Web knows
Tags:
News
Topic in: KernelCare Blog

How to reduce downtime of managed servers - Liquid Web knows

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 of their managed servers only attests to their commitment...
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Recent comment in this post
Guest — gistnvibes
NICE ARTICLE.... KEEP IT UP.. http://gistnvibes.com.ng... Read More
Monday, 13 June 2016 23:35
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