[Elasticsearch] network.host 설정 bootstrap checks failed

elasticsearch.yml에서 network.host를 127.0.0.1로 지정한 후 curl -XGET localhost:9200 을 날리면 잘 되는데 

 

127.0.0.1 -> 10.20.x.x 로 바꿔서 curl -XGET 10.20.x.x:9200 을 날리면 /var/log/my-application.log에서 아래와같이 error 가 발생한다. 

[1] bootstrap checks failed [1]: 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

그래서 아래와 같이 설정을 바꿔줌 

Before 

network.host: 127.0.0.1

After

network.host: ["localhost", "10.20.x.x"] cluster.initial_master_nodes: ["10.20.x.x"]

 

https://linuxacademy.com/community/posts/show/topic/36639-elasticsearch-yml-changes-70