Yesterday, Red Hat released Red Hat Enterprise Linux 8.1. This update brings live Kernel patching to RHEL 8 (and RHEL 7.7). This will bring updates to a running system without needing to reboot it to load the new kernel. Red Hat will bring live patches to Kernels not older than one year.
Other enhancements can be found in Containers. It’s now possible to create custom SELinux rules for containers. A feature I’m very excited about is the option to run containers rootless. Containers running in user space are less vulnerable and need less privileges.
Other enhancements are:
- Chrony is rebased to version 4.5
- Tuned has been rebased to version 2.12
- PHP 7.3, Ruby 2.6 Node.js 12 and Nginx 1.16 are available via AppStream
- A command-line utility called healthcheck is available for IDM servers.
The complete release notes can be found here.
Last month, HashiCorp announced two certifications. One is for Terraform and the other for Vault. Let’s focus on Terraform, one of the fist and largest Infrastructure as Code (IaC) software providers out there. I am very excited about this method of validating my understanding and experience. For the Terraform exam, there are 9 objectives.
Both exams are Associate level, but since there is no equivalent exam for these products it’s basically the only way to ‘proof’ that you are familiar with the products HashiCorp is offering and many, many companies are using today. For a professional freelancer active in Linux infrastructure Solutions like myself it’s almost a must.
On the website adinermie.com all objectives can be found linking to the content you need to be familiar with. A good way to start learning. The HashiCorp exams will be taken proctored online. Price and availability yet to be announced.
After updating my Macbook to the latest OSX version Catalina, the xcode package wasn’t able to update anymore. After spending some time, this solution worked for me:
- Remove the xcode package by dragging it from the Applications folder to Trash
- In the Terminal, paste these two commands:
rm -rf ~/Library/Developer
rm -rf ~/Library/Caches/com.apple.dt.Xcode
- Reboot your machine
- Reinstall xcode from the App Store