Application integration & Middleware

Modifying a Zabbix Template for WildFly JVM Monitoring

Zabbix provides templates easy to setup which do not require any external scripts. As an example, you can check one of my previous blog post on the subject where I monitored a WildFly server. These(…)

Adapt Zabbix to Your Needs

Zabbix comes with an long list of smart and customizable templates (more than 270). In this blog post, I will explain how to customize these templates and adapt them to your environment’s needs. Macro The first level of(…)

Zabbix Report Scheduler Setup and Troubleshooting

I wanted to test the Zabbix report scheduler. In this blog, I will explain how to do it as well as the different issues I faced (with cause and resolution, obviously 🙂 ). By the way, report scheduler(…)

Zabbix Better Storage

Among the different possibilities for Zabbix storage, one piqued my curiosity: TimescaleDB TimescaleDB is a time series database plugin for PostgreSQL. Joël Cattin already blogged about it here from a(…)

JBoss EAP 7 – Use vault to protect passwords

JBoss EAP simplifies a lot of server configuration by consolidating all subsystem configurations into a single XML file (standalone.xml or domain.xml). This, however, can expose sensitive information to any user that has access to the configuration files. For example, datasource(…)

Zabbix Configuration with API

Despite the will of Zabbix to be as automated as possible, some tasks cannot be automated. Nevertheless, Zabbix offers an HTTP-based API which can be used programmatically. This opens the door to huge possibilities in terms of automation.

Unable to start WebLogic Admin Server during host reconfiguration

In my previous blog named “Changing Fusion Middleware repository database“, I explained how to move a Fusion Middleware repository database from one host to a new host. During the run of this exercise, I came over an issue(…)

Apache Kafka Consumer Group

On producer side, messages are load balanced across partition based on hashed key. On the consumer side, to ensure that each message is processed by only one consumer within the group, allowing for load balancing, fault tolerance, and efficient(…)

Apache Kafka Concepts by Example

In this blog post, I will demonstrate the first few concepts to understand when you want to learn Apache Kafka. Documentation explains it well, but I find that concrete examples give a better feeling of(…)

My JVM Memory Analyzes Toolkit

One of the most common errors while running an application is “out of memory”. And Java is no different besides errors being named exceptions. The exact exception name you might have encountered is: java.lang.OutOfMemoryError And, in most cases,(…)