elasticsearch启动时 bootstrap checks failed

[2020-07-23T14:56:10,152][ERROR][o.e.b.Bootstrap          ] [node-1] node validation exception
[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
[2020-07-23T14:56:10,154][INFO ][o.e.n.Node               ] [node-1] stopping ...
[2020-07-23T14:56:10,173][INFO ][o.e.n.Node               ] [node-1] stopped
[2020-07-23T14:56:10,173][INFO ][o.e.n.Node               ] [node-1] closing ...
[2020-07-23T14:56:10,191][INFO ][o.e.n.Node               ] [node-1] closed

# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.seed_hosts: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
cluster.initial_master_nodes: ["node-1"]   #开启这一行
#
# For more information, consult the discovery and cluster formation module documentation.

重启就ok了

sudo systemctl restart elasticsearch.service