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Karsten Lenz

Comparison of support cycles RHEL and Clones

02.06.2023 by Karsten Lenz

This blog is a comparison about the support periods of RHEL and the RHEL clones like AlmaLinux, Enterprise Linux, Oracle Linux and Rocky Linux and a look back to CentOS. CentOS Stream is a pre release of RHEL, so(…)

Database management

Microsoft Flexible Server Compute V5

17.03.2023 by Karsten Lenz

Today I had the chance to move forwar with performance testing and some checks on two Flexible Server – Azure Database for PostgreSQL, one with 8vCPU, 64GB RAM and 512GB Storage (2300 IOPs) and another one with the same vCPU(…)

Database management

Flexible Server for PostgreSQL, Status March 2023

02.03.2023 by Karsten Lenz

As many know about a year ago I wrote some critical posts about Microsofts Flexible Server for PostgreSQL, now it is time to take a look again. At first, many promised functions where delivered with a latency of about one(…)

Database Administration & Monitoring

Fast setup of a two node repmgr cluster with auto failover

23.12.2022 by Karsten Lenz

This blog is about a fast, script based, setup of a repmgr two node cluster with auto failover. This setup is very easy and the requirements comparing to a patroni setup very low, for exapmle as open port on the(…)

Database management

PostgreSQL Cluster using repmgr

11.08.2022 by Karsten Lenz

With this blog I describe the installation of a PostgreSQL Cluster using repmgr instead of Patroni. Repmgr was originally developed by 2ndQuadrant which is now part of EDB and EDB decided for the 2ndQuadrant tools for the future, barman as(…)

Operating systems

PostgreSQL on 80 core ARM Server

25.07.2022 by Karsten Lenz

This Blog is about intallation and testing PostgreSQL 14 latest on an ARM based 80 core Server using Rocky Linux 8.6. Many thanks to Happyware for providing the machine used for this Blog. https://happyware.com/ The machine used for this(…)

Operating systems

Setup a Rocky Linux Repository server

18.07.2022 by Karsten Lenz

This Blog is about a setup of a Rocky Linux Repository server. Many people whould complain that it will be the same than RHEL 8, but is is not, there are some differencies between AlmaLinux, Rocky Linux, Oracle Linux(…)

Operating systems

Setup a AlmaLinux 8 Repository Server

18.07.2022 by Karsten Lenz

This Blog is about to setup a AlmaLinux 8 Repository Server including EPEL and RPMFusion. Many people whould complain that it will be the same than RHEL 8, but is is not, there are some differencies between AlmaLinux, Rocky Linux,(…)

Operating systems

Setup a RHEL 8 Repository Server

18.07.2022 by Karsten Lenz

This Blog is about a own Repository server for RHEL 8, Blogs for Repository Server for AlmaLinux, Oracle Linux, Rocky Linux, OpenSuse LEAP, SLES 15 and Debian 11 will follow. The base is a minimal installation.I have added EPEL and(…)

Database Administration & Monitoring

How to setup a Consul Cluster on RHEL 8, Rocky Linux 8, AlmaLinux 8 part 2

02.05.2022 by Karsten Lenz

Within the first part I have described the setup of Consul as replacement for ETCD. Here now the setup ob keepalived, haproxy and patroni. The needed packages I have installed within the first part, so let’s start with the(…)