I am very new to ELK, and inherited this environment. this is not rolled out to production.
I have the following servers:
logstash index server version 2.3
logstash shipping server version 2.3
elasticserach cluster (3 servers 2 data 1 master) version 2.3.2
kibana web version 4.5
this was all working, until i upgraded all to the latest version.
now the logs never seem to get to elastic search, all of the services are running,
I am unclear as to where to begin troubleshooting this.
Any help would be greatly appreciated.