something goes wrong when starting up the canal client adapters

[jinguifa]

Question

配置文件：
`server:
port: 8081
logging:
level:
com.alibaba.otter.canal.client.adapter.es: DEBUG
spring:
jackson:
date-format: yyyy-MM-dd HH:mm:ss
time-zone: GMT+8
default-property-inclusion: non_null

canal.conf:
canalServerHost: 127.0.0.1:11111
flatMessage: true
srcDataSources:
defaultDS:
url: jdbc:mysql://127.0.0.1:3306/canal_tsdb?useUnicode=true
username: canal
password: canal
canalInstances:

• instance: example
  adapterGroups:
  • outAdapters:
    • name: es
      key: es8
      hosts: 127.0.0.1:9300 # es 集群地址, 逗号分隔
      properties:
      cluster.name: docker-cluster # es cluster name
      `
      启动日志：
      c.a.otter.canal.adapter.launcher.CanalAdapterApplication - Starting CanalAdapterApplication using Java 1.8.0_462 on VM-0-9-tencentos with PID 3857799 (/usr/local/canal-adapter1.1.8/lib/client-adapter.launcher-1.1.8.jar started by root in /usr/local/canal-adapter1.1.8/bin)
      2025-11-26 10:12:18.578 [main] INFO c.a.otter.canal.adapter.launcher.CanalAdapterApplication - No active profile set, falling back to 1 default profile: "default"
      2025-11-26 10:12:19.185 [main] INFO org.springframework.cloud.context.scope.GenericScope - BeanFactory id=d4f2b56b-aacd-327d-9217-5ce4cfc37805
      2025-11-26 10:12:19.424 [main] INFO o.s.boot.web.embedded.tomcat.TomcatWebServer - Tomcat initialized with port(s): 8081 (http)
      2025-11-26 10:12:19.430 [main] INFO org.apache.coyote.http11.Http11NioProtocol - Initializing ProtocolHandler ["http-nio-8081"]
      2025-11-26 10:12:19.431 [main] INFO org.apache.catalina.core.StandardService - Starting service [Tomcat]
      2025-11-26 10:12:19.431 [main] INFO org.apache.catalina.core.StandardEngine - Starting Servlet engine: [Apache Tomcat/9.0.75]
      2025-11-26 10:12:19.495 [main] INFO o.a.catalina.core.ContainerBase.[Tomcat].[localhost].[/] - Initializing Spring embedded WebApplicationContext
      2025-11-26 10:12:19.496 [main] INFO o.s.b.w.s.context.ServletWebServerApplicationContext - Root WebApplicationContext: initialization completed in 871 ms
      2025-11-26 10:12:19.706 [main] INFO ru.yandex.clickhouse.ClickHouseDriver - Driver registered
      2025-11-26 10:12:20.070 [main] INFO com.alibaba.druid.pool.DruidDataSource - {dataSource-1} inited
      2025-11-26 10:12:20.471 [main] INFO org.apache.coyote.http11.Http11NioProtocol - Starting ProtocolHandler ["http-nio-8081"]
      2025-11-26 10:12:20.485 [main] INFO o.s.boot.web.embedded.tomcat.TomcatWebServer - Tomcat started on port(s): 8081 (http) with context path ''
      2025-11-26 10:12:20.489 [main] INFO c.a.o.canal.adapter.launcher.loader.CanalAdapterService - ## syncSwitch refreshed.
      2025-11-26 10:12:20.489 [main] INFO c.a.o.canal.adapter.launcher.loader.CanalAdapterService - ## start the canal client adapters.
      2025-11-26 10:12:20.490 [main] ERROR c.a.o.canal.adapter.launcher.loader.CanalAdapterService - ## something goes wrong when starting up the canal client adapters:
      java.lang.NullPointerException: null
      at com.alibaba.otter.canal.adapter.launcher.loader.CanalAdapterLoader.init(CanalAdapterLoader.java:54)
      at com.alibaba.otter.canal.adapter.launcher.loader.CanalAdapterService.init(CanalAdapterService.java:60)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389)
      at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333)
      at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:440)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:374)
      at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:376)
      at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:179)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:371)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
      at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1156)
      at org.springframework.cloud.context.scope.refresh.RefreshScope.eagerlyInitialize(RefreshScope.java:125)
      at org.springframework.cloud.context.scope.refresh.RefreshScope.start(RefreshScope.java:117)
      at org.springframework.cloud.context.scope.refresh.RefreshScope.onApplicationEvent(RefreshScope.java:112)
      at org.springframework.cloud.context.scope.refresh.RefreshScope.onApplicationEvent(RefreshScope.java:67)
      at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
      at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
      at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
      at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:421)
      at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:378)
      at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:940)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586)
      at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780)
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:453)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:343)
      at com.alibaba.otter.canal.adapter.launcher.CanalAdapterApplication.main(CanalAdapterApplication.java:22)
      2025-11-26 10:12:20.499 [main] INFO c.a.otter.canal.adapter.launcher.CanalAdapterApplication - Started CanalAdapterApplication in 2.3 seconds (JVM running for 2.743)