azouhr

More than 30 years ago, when 32 Bit, and Athlon used to be modern, I was fascinated with the little program freq51 (called as xfreq on X11).

When I was looking for a solution that could provide High Availability for two Datacenters, the only solution that remained viable and comprehensible for me was using Corosync/Pacemaker.

During my works on Kubernetes on Linux on Z and the creation of https://github.com/azouhr/pgtwin, I came across the same issue that most admins have to solve in two-node clusters.

in the previous blog pgtwin — HA PostgreSQL: VM Preparation we setup two VMs with KVM to prepare for a HA PostgreSQL setup.

In my last post Kubernetes on Linux on Z, I explained why I need a highly available PostgreSQL Database to operate K3s.

This year, I had the task of setting up a Kubernetes environment on a Linux Partition on a s390x system.

When developing for architectures that are not mainstream, developers often have challenges to get access to current systems that allow to work on a specific software.

Using Port Forwarding with xinetd has served me well at many occasions.

Virtualization systems like KVM, Xen, or z/VM offer the possibility to move running guests from one physical server to another one without service interruption.

The standard method to access z/VM is using a 3215 terminal with a terminal emulator.