I'm new to ELK and I am testing this solution for storing logs of servers and network assets.
One of the collected logs is from an ASA-5520 and being structured through these grok patterns https://github.com/logstash-plugins/logstash-patterns-core/blob/master/patterns/firewalls
The problem is that almost all the fields have been mapped as a string and I would like some fields such as "bytes" to be converted to int and make better graphs in Kibana.
It's possible? How?
Right now I'm doing the opposite direction and reading the elasticserach documentation to understand basic concepts such as cluster, node, index, shard, replica, mapping, etc ...