I suspect the problem is going to be firewall blocking communications between servers. CentOS defaults to deny.
Stop firewall to confirm this: service iptables stop Or java processes binding to IPv6 addresses when configuration files are assuming IPv4 See the extra :: in front of 9200 and 9300 in netstat output. Virgil -- You received this message because you are subscribed to the Google Groups "graylog2" group. To unsubscribe from this group and stop receiving emails from it, send an email to graylog2+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.