ES基础（四十九）集群内部安全通信

# 生成证书
# 为您的Elasticearch集群创建一个证书颁发机构。例如，使用elasticsearch-certutil ca命令：
bin/elasticsearch-certutil ca

#为群集中的每个节点生成证书和私钥。例如，使用elasticsearch-certutil cert 命令：
bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12

#将证书拷贝到 config/certs目录下
elastic-certificates.p12


bin/elasticsearch -E node.name=node0 -E cluster.name=geektime -E path.data=node0_data -E http.port=9200 -E xpack.security.enabled=true -E xpack.security.transport.ssl.enabled=true -E xpack.security.transport.ssl.verification_mode=certificate -E xpack.security.transport.ssl.keystore.path=certs/elastic-certificates.p12 -E xpack.security.transport.ssl.truststore.path=certs/elastic-certificates.p12

bin/elasticsearch -E node.name=node1 -E cluster.name=geektime -E path.data=node1_data -E http.port=9201 -E xpack.security.enabled=true -E xpack.security.transport.ssl.enabled=true -E xpack.security.transport.ssl.verification_mode=certificate -E xpack.security.transport.ssl.keystore.path=certs/elastic-certificates.p12 -E xpack.security.transport.ssl.truststore.path=certs/elastic-certificates.p12


#不提供证书的节点，无法加入
bin/elasticsearch -E node.name=node2 -E cluster.name=geektime -E path.data=node2_data -E http.port=9202 -E xpack.security.enabled=true -E xpack.security.transport.ssl.enabled=true -E xpack.security.transport.ssl.verification_mode=certificate

## elasticsearch.yml 配置

#xpack.security.transport.ssl.enabled: true
#xpack.security.transport.ssl.verification_mode: certificate

#xpack.security.transport.ssl.keystore.path: certs/elastic-certificates.p12
#xpack.security.transport.ssl.truststore.path: certs/elastic-certificates.p12