1 用户认证介绍
默认ES是没有设置用户认证访问的，所以每次访问时，直接调相关API就能查询和写入数据。现在做一个认证，只有通过认证的用户才能访问和操作ES。
2 开启加密设置
1.生成证书文件
/usr/share/elasticsearch/bin/elasticsearch-certutil \
cert --days 3650 \
-out /etc/elasticsearch/config/elastic-certificates.p12 \
-pass ""输入 Y 确认
2.修改证书权限，可以发现是没有读权限的
[root@elk91~]# ll /etc/elasticsearch/config/
-rw------- 1 root elasticsearch 3596 Nov 22 10:54 elastic-certificates.p12
[root@elk91~]# chmod +r /etc/elasticsearch/config/elastic-certificates.p12
[root@elk91~]#
3.elk91节点同步证书文件到其他节点
scp -r /etc/elasticsearch/config/ 10.0.0.92:/etc/elasticsearch/
scp -r /etc/elasticsearch/config/ 10.0.0.93:/etc/elasticsearch/
4.所有节点修改ES集群的配置文件 **/etc/elasticsearch/elasticsearch.yml **，在最后一行添加以下内容
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: config/elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: config/elastic-certificates.p12
5.所有节点重启ES集群
systemctl restart elasticsearch.service
6.所有节点检查集群节点端口是否监听
[root@elk91~]# ss -ntl | grep '9[2|3]00'
LISTEN 0 4096 *:9300 *:*
LISTEN 0 4096 *:9200 *:*
7.测试访问ES集群生效。ES集群加密成功，用户无法直接访问，直接会拒绝，状态码为401
curl 10.0.0.93:9200
{“error”:{“root_cause”:[{“type”:“security_exception”,“reason”:“missing authentication credentials for REST request [/]”,“header”:{“WWW-Authenticate”:"Basic realm=“security” charset=“UTF-8"”}}],“type”:“security_exception”,“reason”:“missing authentication credentials for REST request [/]”,“header”:{“WWW-Authenticate”:"Basic realm=“security” charset=“UTF-8"”}},“status”:401}
3 设置客户端访问ES
3.1 生成访问ES所需密码
如果手动输入密码非常繁琐，要输入8次。自动生成比较省事
1.自动生成ES的随机密码
/usr/share/elasticsearch/bin/elasticsearch-setup-passwords auto# 输入 yChanged password for user apm_system
PASSWORD apm_system = LwZaR33f7BKl2vYK49zyChanged password for user kibana_system
PASSWORD kibana_system = ZR1gDykyGk50t55Dq7w9Changed password for user kibana
PASSWORD kibana = ZR1gDykyGk50t55Dq7w9Changed password for user logstash_system
PASSWORD logstash_system = Zx45S9uCJ4bSHmL3Hc4vChanged password for user beats_system
PASSWORD beats_system = Oi4DFzsFkFPx45g3MOa0Changed password for user remote_monitoring_user
PASSWORD remote_monitoring_user = u7MupRNtSLZ5K6lpz7qxChanged password for user elastic
PASSWORD elastic = KZ0smMuIXcLEBfxGcqWW
2.使用用户+密码访问ES
[root@elk91~]# curl -u elastic:KZ0smMuIXcLEBfxGcqWW 10.0.0.93:9200/_cat/nodes
10.0.0.92 39 56 0 0.52 0.57 0.55 cdfhilmrstw - elk92
10.0.0.93 37 53 0 0.14 0.43 0.49 cdfhilmrstw - elk93
10.0.0.91 65 75 2 0.24 0.36 0.35 cdfhilmrstw * elk91
3.2 kibana访问ES
1.修改kibana的配置文件：/etc/kibana/kibana.yml，增加以下配置
elasticsearch.username: "kibana_system"
elasticsearch.password: "ZR1gDykyGk50t55Dq7w9"
2.重启kibana
systemctl restart kibana.service
3.再次访问kibana，输入 elastic + 密码 即可登录
3.3 filebeat访问ES
1.编写filebeat配置文件后，在 output.elasticsearch 增加用户认证即可
cat > 17-tcp-to-es.yaml <<EOF
filebeat.inputs:
- type: tcphost: "0.0.0.0:9000"output.elasticsearch:hosts: - "http://10.0.0.91:9200"- "http://10.0.0.92:9200"- "http://10.0.0.93:9200"index: "zhiyong18-luckyboy-log-es-tls"# 在这里添加用户认证username: "elastic"password: "KZ0smMuIXcLEBfxGcqWW"setup.ilm.enabled: false
setup.template.name: "zhiyong18-luckyboy-modules"
setup.template.pattern: "zhiyong18-luckyboy-log*"
setup.template.overwrite: false
EOF
2.测试filebeat写入成功
# 发送册数数据
echo 'name: wzy' | nc 10.0.0.92 9000
可以查看到这条文档
3.也可以在kibana上给es修改密码
3.4 logstash访问ES
cat > 08-tcp-to-es_tls.conf <<EOF
input {tcp {port => 8888}
}output {stdout {}elasticsearch {hosts => ["http://10.0.0.91:9200","http://10.0.0.92:9200","http://10.0.0.93:9200"]index => "zhiyong18-luckyboy-es-tls-logstash-%{+yyyy.MM.dd}"user => "elastic"password => "123456"}
}
EOF
3.5 postman访问ES
:9200","http://10.0.0.93:9200"]index => "zhiyong18-luckyboy-es-tls-logstash-%{+yyyy.MM.dd}"user => "elastic"password => "123456"}
}
EOF
3.5 postman访问ES
