virualbox安装的centos7，按上述配置slave启动不了

slave识别不了

127.0.0.1:9200 master

127.0.0.1:9201 slave1

127.0.0.1:9202 slave2

127.0.0.1:9203 slave3

四个节点的安装包是根据原始包解压后复制的。

结果四个都是master，折腾一天了也没找到问题，跪求大神解答

[elastic@localhost local]$ curl http://127.0.0.1:9201/_cat/nodes

{"error":{"root_cause":[{"type":"master_not_discovered_exception","reason":null}],"type":"master_not_discovered_exception","reason":null},"status":503}