All of this runs on one single server, no big infrastructure, no big data. I am unable to find a SIMPLE tool to collect my logs in some way, parse them, and visualize them in histograms for example.
I know there exist ELK stack, Splunk, Graylog and many others, but all these solutions are much too complex. Especially I do not want to spend weeks setting this up correctly. Further more, most of these solutions need an extra server for aggregating the logdata in some timeseries db.
I would be very happy if you know about any opensource tool which can do this job.