I am trying to setup an ELK stack but I have a question about Logstash-forwarder and SSL. My setup looks like this:
Logstash-forwarder -> HAProxy (VM) -> (2 VM's) Logstash/Redis -> (2 VM's) Logstash Indexer -> (1 physical server) ElasticSearch/Kibana
When generating the SSL cert and key pair for Logstash-forwarder what FQDN do I use since there will be two Logstash servers behind the HAProxy LB?
Thanks in advance for the help.