下載WINDOWS版本ES8 解壓縮后 使用第一次運行elasticSearch時 會自動進行安全配置
這事在控制臺中可以看到有password

-> Elasticsearch security features have been automatically configured!
-> Authentication is enabled and cluster connections are encrypted.

->  Password for the elastic user (reset with `bin/elasticsearch-reset-password -u elastic`):
  RGiwCn4abvxC4CYHNqvU

->  HTTP CA certificate SHA-256 fingerprint:
  d19444a525f78eb2d2cc54dd176a5ba19d622d6f140e172c86efeaccdac3fd3b

->  Configure Kibana to use this cluster:
* Run Kibana and click the configuration link in the terminal when Kibana starts.
* Copy the following enrollment token and paste it into Kibana in your browser (valid for the next 30 minutes):
  eyJ2ZXIiOiI4LjAuMCIsImFkciI6WyIxNzIuMTkuNTEuNjU6OTIwMCIsIjE5Mi4xNjguMzEuMTE6OTIwMCIsIjE5Mi4xNjguMTA2LjE6OTIwMCIsIjE5Mi4xNjguMjMuMTo5MjAwIl0sImZnciI6ImQxOTQ0NGE1MjVmNzhlYjJkMmNjNTRkZDE3NmE1YmExOWQ2MjJkNmYxNDBlMTcyYzg2ZWZlYWNjZGFjM2ZkM2IiLCJrZXkiOiJ6TGhPOTM0QlBfcEVPS3pnVlhocTpNUmg0TnFqcVJvNm45R1ZHSFNPRllnIn0=

->  Configure other nodes to join this cluster:
* On this node:
  - Create an enrollment token with `bin/elasticsearch-create-enrollment-token -s node`.
  - Uncomment the transport.host setting at the end of config/elasticsearch.yml.
  - Restart Elasticsearch.
* On other nodes:
  - Start Elasticsearch with `bin/elasticsearch --enrollment-token `, using the enrollment token that you generated.

如果你已經不是第一次啟動,請在log日志中查找即可