Elasticsearch 503 error when checking server status
There could be another instance in your local network with elasticsearch server up and running. Since shards in elasticsearch are working from the box and enabled by default there could be a conflict of master node. Please review your elasticsearch.log file. If there is something like
{"error":"MasterNotDiscoveredException[waited for [30s]]","status":503} You should go to your config file /etc/elasticsearch/elasticsearch.yml and add this line:
discovery.zen.ping.multicast.enabled: false
in addition check value of
discovery.zen.ping.unicast.hostsbecause it is necessary to discover elastic nodes
In my case, I'm using a proxy on my terminal which runs the rails server. After disabling the proxy and restart rails server, the problem solved.