Graylog is a centralized log management solution to capture, store and analyze log files in real-time. Starting with the latest minor release 4.3 Graylog announced to no longer support Elasticsearch (ES) due to licensing and structural changes Elastic introduced in v7.11. For this reason, the last supported ES version is 7.10, which has already reached EOL on May 11, 2022.

Telegraf is a powerful, plugin based metrics collector that also provides Prometheus compatible outputs. For various purposes, there are a number of input plugins that can collect metrics from various sources. Even more powerful are the processor plugins that allow metrics to be processed and manipulated as they pass through, and immediately output results based on the values they process. In this short blog post I’ll explain how to fetch JSON metrics from the Docker registry API to track some data of a DockerHub Repository.

If you work with a lot of Git repositories on a regular basis, you’re bound to run into the situation where you need to make changes to multiple repositories sooner or later. While it would be possible to run your Git commands in a shell loop over everything repositories, it is often tedious to type the command or remember the correct syntax.