Unlike the common notion of "if it ain't broke, don't fix it", I thought of upgrading my lab Kubernetes cluster from v1.23 to v1.24, just for fun. Now since it was a lab, it's easier for me to decide and simply go on with it, but for production, of course, you need to decide if … Continue reading Kubernetes Upgrade v1.23 to v1.24 – Common Errors and Solutions
Linux & Windows
Certified Cloud Security Professional – CCSP [Overview]
Introduction Welcome to Blog-1 of the CCSP - Certified Cloud Security Professional study group. I started this blog, immediately after my CompTIA SY+ 601 Certification, but could not publish new content as I wanted to wrap up my podcast on the CompTIA exam first. I will start with usual questions, like Why CCSP is important, … Continue reading Certified Cloud Security Professional – CCSP [Overview]
Docker Desktop for Linux – Ubuntu 22.04 + Docker Desktop 4.8.0
Docker Con 2022's biggest highlight was the launch of the Docker Desktop for Linux Users. For Windows and Mac users, this setup was already available for obvious reasons. But for Ubuntu desktop users like me, the only way to work was to use the Docker CLI for calling the backend containerd run time engine. Hence, … Continue reading Docker Desktop for Linux – Ubuntu 22.04 + Docker Desktop 4.8.0
Self-Signed Certificate for GitLab 13.10.3
GitLab can be installed on the private cloud with access to internal applications for code repositories. GitLab application uses an in-build Nginx web service with the option to use either HTTP or HTTPS, based on internal info-security requirements. To use HTTPS, we need to provide the Gitlab application with an updated SSL certificate. We can … Continue reading Self-Signed Certificate for GitLab 13.10.3
[Blog 1] CKS – Certified Kubernetes Security Specialist
Introduction Welcome to Blog-1 of the CKS - Certified Kubernetes Security Specialist study group. This certification is more than two years old now, and we already have a lot of people certified as Kubernetes Security Specialists, but if you are like me, better late than never. I am already CKA certified, and that's one of … Continue reading [Blog 1] CKS – Certified Kubernetes Security Specialist
Dependency Failed for /var in RHEL/CentOS
In one of my blog, where we recovered linux system from emergency mode using xfs_repair utility expectations was full recovery of system. However, we may encounter another error after where system will go in emergency mode again due to different reason. Again we may use journalctl utility to understand error message. For my case, three … Continue reading Dependency Failed for /var in RHEL/CentOS
Not able to mount sysroot- Recovery of RHEL/CentOS
Error after OS Reboot Many times, if linux partitions if not mounted properly or resized with correct steps (Refer my Blog: Linux partition resizing using LVM), may lead to machine going in grub recovery mode or rescue mode. Now, reasons why this may happen is not part of this blog. What I am covering here … Continue reading Not able to mount sysroot- Recovery of RHEL/CentOS
TechnoKofe 