ERROR: [2] bootstrap checks failed
[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[2]: 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
ERROR: Elasticsearch did not exit normally - check the logs at /usr/share/elasticsearch/logs/docker-elasticsearch.log
/etc/security/limits.conf 中添加：* soft nofile 65536
* hard nofile 65536
/etc/sysctl.conf 中添加：vm.max_map_count=655360
sysctl ‐p
缺少默认配置，至少需要配置discovery.seed_hosts / discovery.seed_providers / cluster.initial_master_nodes中的一个参数.
discovery.seed_hosts: 集群主机列表discovery.seed_providers: 基于配置文件配置集群主机列表cluster.initial_master_nodes: 启动时初始化的参与选主的node，生产环境必填编辑配置文件，添加：
discovery.seed_hosts: ["127.0.0.1"]
cluster.initial_master_nodes: ["node-1"]