Aggregating postfix logs with Logstash
Introduction Logstash is the one core parts of the now reknown ELK stack. A lot of people in the IT industry now use this stack to centralize its logs, analyze them and create dashboards using all this data. Most of us do so by sending logs into a Logstash instance, whether it’s using Filebeat for files, Logspout for containers or anything else. We then extract some fields from these logs using a grok pattern, and tunnel these sets of fields into elasticsearch events....