log   [09:22:09.876] [warning][savedobjects-service] Unable to connect to Elasticsearch. Error: [master_not_discovered_exception] null
  log   [09:22:10.045] [warning][savedobjects-service] Unable to connect to Elasticsearch. Error: Request Timeout after 30000ms

http://10.10.13.12:9200/_cat/nodes?pretty

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

$ vim /data/elasticsearch/config/elasticsearch.yml

cluster.initial_master_nodes: node-1
#在每个配置文件指定初始节点,node-1 为节点 node name

http://10.10.13.12:9200/_cat/nodes?pretty

10.10.13.12 24 52 0 0.06 0.08 0.09 dilmrt * node-1