kibana无法连接elasticsearch

问题"Unable to revive connection: http://XXX.XXX.XXX.XXX:9200/"

确定直接访问http://XXX.XXX.XXX.XXX:9200/是可以的。开放防火墙端口

# 开放防火墙端口
# elasticsearch
firewall-cmd --zone=public --add-port=9200/tcp --permanent
# kibana
firewall-cmd --zone=public --add-port=5601/tcp --permanent
# logstash
firewall-cmd --zone=public --add-port=4560/tcp --permanent
# 重载防火墙
firewall-cmd --reload