Is it possible to configure FileBeat to exit if it cannot connect to LogStash. I lookup my logstash ip from etcd and then startup filebeat using this IP. If however the ip of logstash changes (which it can and will) i would like filebeat to stop. The restart process (managed by systemd) will then lookup the ip and configure filebeat to use the new ip. I would prefer not to revert to DNS to solve this issue. Any suggestions ?