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Installing Oracle 23c Free developer release on Proxmox

Oracle provides an OVA (Open Virtual Appliance) file to install the 23c Free Developer Release on Virtualbox. An OVA file contains metadata and file elements in the Open Virtual Format (OVF) to package and distribute one or more virtual machines.

SNMP Monitoring with Prometheus

It is not always possible to install an exporter on the server or equipment you must monitor, either because you don’t administrate that server, or it cannot run an exporter (ie. device with limited resources). For that purpose, two exporters(…)

PostgreSQL 16: More statistics in pg_stat_*_tables

PostgreSQL 16 is already in feature freeze and Beta1 has been released on May 25th. This is the time you should start testing and report any issues back to the community. There are plenty of new features, as usual, and(…)

Comparison of support cycles RHEL and Clones

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(…)

2023.pgconf.de and the Swiss PGDay are just around the corner

Time flies, we are in June already and at the end of this month two PostgreSQL conferences will take place: There is 2023.pgconf.de, this year in Essen, the 27th of June. For the first time in(…)

Troubleshoot cloud-unit “Error: Invalid cloud-config schema: user-data” @ Oracle Cloud Infrastructure

While applying what seemed to be a minor update, we managed to “break” our cloud-init automated OCI compute instance deployment process. This blog describes how to quickly troubleshoot & debug your #cloud-config on Oracle Cloud Infrastructure (not so different from(…)

WildFly monitoring in Zabbix

Zabbix is a fully featured open-source monitoring solution. I wanted to evaluate how easy it is to monitor an application server like WildFly. Server Installation First component to install is the server which also requires a(…)

Monitoring Short Living Processes with Prometheus

With the way Prometheus is gathering metrics, pull, it is not possible to get metrics from short living processes like batch jobs as: batch jobs can be shorter than scrap_interval batch timings and scrap_interval are not aligned In this blog,(…)

Redis: Connect your Redis data on Dbeaver

Introduction During a previous post, we saw how to browse in your Redis data using it’s official tool Redis insight 🙂 As per a customer request we want to centralize all data types and tool in one tool. How(…)

Predict the Future with Prometheus

As I am focusing on monitoring subject, I was wondering if it is possible to set alarm based on prediction instead of simple thresholds. Dynatrace has predictive anomaly detection feature, but in this blog, I want to test if on-premises(…)