Node can't join Elasticsearch cluster

Add rules in /etc/sysconfig/iptables :

#elasticsearch
-A INPUT -m state --state NEW -m tcp -p tcp --dport 9200 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 9300 -j ACCEPT
-A INPUT -m pkttype --pkt-type multicast -j ACCEPT