报错
the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
解决：
看配置文件elasticsearch-.yml里面的Discovery里面有一个
#cluster.initial_master_nodes: ["node-1", "node-2"]
cluster.initial_master_nodes: ["node-1"] 这个的话，这里的node-1是上面一个默认的记得打开就可以了
