SpringBoot 2.7.17迁移后Elasticsearch节点嗅探超时问题求助

将项目从SpringBoot 2.4.0迁移至2.7.17，使用Java 11和Elasticsearch 7.10.1版本。项目启动后运行正常，能创建数据库并插入所有数据，但运行4-5分钟后出现以下错误：

org.elasticsearch.client.sniff.Sniffer$Task: error while sniffing nodes - java.net.ConnectException: Timeout connecting to [/172.17.0.2:9200]

经Docker查看，172.17.0.2是Elasticsearch容器的IP地址。报错后项目仍继续运行，且后端Elasticsearch功能似乎正常。

相关配置文件 #

application.yaml #

setup:
  admin-account: "..."
security:
  jwt:
    validity-minutes: 60
elastic:
  reindex:
    cron: "0 0 3 * * ?"

spring:
  jpa:
    hibernate:
      ddl-auto: validate
    properties:
      hibernate:
        search:
          schema_management:
            strategy: drop-and-create-and-drop
          backend:
            hosts: localhost:9200
            protocol: http
  liquibase:
    change-log: classpath:db/changelog/db.changelog-master.yaml
    enabled: true
    contexts: test_1
  servlet:
    multipart:
      max-file-size: 10MB
      max-request-size: 10MB

logging:
  level:
    de.bbht: WARN
    org:
      springframework:
        security: WARN
  config: "./config/logback.xml"

springdoc:
  api-docs:
    enabled: true
  swagger-ui:
    operations-sorter: "method"

server:
  error:
    include-message: always

application-local.yaml #

cors:
  allowed-origins:
    - "http://localhost:8080"
    - "http://localhost:4200"
security:
  jwt:
    secret: ...
spring:
  datasource:
    url: jdbc:postgresql://localhost:5432/postgres?useSSL=false
    username: postgres
    password:
  liquibase:
    change-log: classpath:db/changelog/db.changelog-master.yaml
    enabled: true
  jpa:
    database-platform: org.hibernate.dialect.PostgreSQL9Dialect
  mail:
    host: smtp.gmail.com
    port: 587
    username: "..."
    password: "..."
    properties:
      mail:
        smtp:
          auth: true
          starttls:
            enable: true
logging:
  level:
    de.bbht: DEBUG
    org:
      docx4j:
        model:
          datastorage: DEBUG
      springframework:
        security: DEBUG

已尝试的解决方案 #

• 升级Elasticsearch镜像至7.17.3，问题依旧存在
• 在application.yaml中添加以下配置，无效：

spring:
  data:
    elasticsearch:
      cluster-name: elasticsearch
      cluster-nodes: localhost:9200
      repositories:
        enabled: true

内容的提问来源于stack exchange，提问作者Sistem Suciu