Category Archives: Uncategorized

Red Hat 7 Get back eth Network Device Names

On installation of Red Hat or CentOS 7, boot the Anaconda installer with net.ifnames=0 parameter. On installer boot, hit the esc key. On the “boot” prompt, enter linux net.ifnames=0 and hit enter. The installer will now boot. Go into the network settings in the … Continue reading

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Dirty COW Red Hat/CentOS patches released

Patches to fix the Dirty COW vulnerability have been released by Red Hat and CentOS for RHEL/CentOS. The patch is presented as a kernel upgrade and should be applied as soon as possible. You can read more about this patch on … Continue reading

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Linux audit “Backlog limit exceeded”

If you’re running a busy Linux system, you may see the following error in your Kernel logs: “audit: backlog limit exceeded”. For example: To alleviate the message output in your logs, you can increase the audit buffer. Edit /etc/audit/audit.rules and … Continue reading

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Getting started with AWS – Creating a CentOS 6 server (EC2)

Select top left menu Services > Compute > EC2 Under “Create Instance”, select “Launch Instance” Go to “AWS Marketplace”  and search for “centos”. Select “CentOS 6 (x86_64) – with Updates HVM” Choose an instance type. t2.micro is a good, cheap … Continue reading

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Red Hat Enterprise Linux 6.8 Released

Red Hat has released update 8 of RHEL 6. Read the press release here. Along with security updates, this release features the ability to expand the XFS file system to up 300TB, and the ability to create a deployable snapshot … Continue reading

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OpenSSL DROWN Vulnerability

Red Hat has released a new patch for OpenSSL which fixes some serious security vulnerabilities, particularly with SSL enabled websites. There’s currently an attack method that hackers are using on vulnerable systems called DROWN. You can read more about it … Continue reading

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FEB 2016 CRITICAL SECURITY PATCH – glibc

Red Hat has released a very important patch for a new glibc vulnerability which affects all servers and services running on Red Hat or CentOS 6 and 7. This patch should be applied as soon as possible. This patch is … Continue reading

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CentOS 6.7

CentOS 6.7 has been released! Read the Release Notes here.

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July 2015 OpenSSL Vulnerability – CVE-2015-1793

“No Red Hat products are affected by the CVE-2015-1793 flaw. No actions need to be performed to fix or mitigate this issue in any way.” This would also include CentOS 4/5/6/7. More info from Red Hat here.

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Disks sda, sdb contains BIOS RAID metadata, but are not part of any recognized BIOS RAID sets.

When trying to install CentOS or Red Hat Linux, you may come upon this error message – “Disks sda, sdb contains BIOS RAID metadata, but are not part of any recognized BIOS RAID sets. Ignoring disks sda, sdb”. This may … Continue reading

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