卡桑德拉抛出 NoHostAvailableException

Question

我有 3 个节点集群，复制因子为 2，我的一个 Cassandra 节点已关闭，我开始在我的 java 服务中收到以下异常

org.springframework.cassandra.support.exception.CassandraConnectionFailureException: All host(s) tried for query failed (no host was tried); nested exception is com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (no host was tried)
at org.springframework.cassandra.support.CassandraExceptionTranslator.translateExceptionIfPossible(CassandraExceptionTranslator.java:145)
at org.springframework.cassandra.core.CqlTemplate.potentiallyConvertRuntimeException(CqlTemplate.java:946)
at org.springframework.cassandra.core.CqlTemplate.translateExceptionIfPossible(CqlTemplate.java:930)
at org.springframework.cassandra.core.CqlTemplate.translateExceptionIfPossible(CqlTemplate.java:912)
at org.springframework.cassandra.core.CqlTemplate.doExecute(CqlTemplate.java:278)
at org.springframework.cassandra.core.CqlTemplate.doExecute(CqlTemplate.java:559)
at org.springframework.cassandra.core.CqlTemplate.doExecute(CqlTemplate.java:549)
at org.springframework.cassandra.core.CqlTemplate.query(CqlTemplate.java:485)
at org.springframework.cassandra.core.CqlTemplate.query(CqlTemplate.java:510)
at org.springframework.cassandra.core.CqlTemplate.query(CqlTemplate.java:505)
at org.springframework.data.cassandra.core.CassandraTemplate.selectOne(CassandraTemplate.java:638)
at org.springframework.data.cassandra.core.CassandraTemplate.selectOne(CassandraTemplate.java:509)
at org.springframework.data.cassandra.repository.query.CassandraQueryExecution$SingleEntityExecution.execute(CassandraQueryExecution.java:104)
at org.springframework.data.cassandra.repository.query.CassandraQueryExecution$ResultProcessingExecution.execute(CassandraQueryExecution.java:143)
at org.springframework.data.cassandra.repository.query.AbstractCassandraQuery.execute(AbstractCassandraQuery.java:113)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:499)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:477)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:57)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy125.getSearchAppearanceCount(Unknown Source)
at sun.reflect.GeneratedMethodAccessor168.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)

Cassandra 版本：3.0.0

Java 驱动版本：3.3.0

从 DNS 中删除节点（已关闭）后，我尝试重新启动我的 java 服务并开始出现异常

com.datastax.driver.core.exceptions.AuthenticationException: Authentication error on host cassandra-activitydb.resdex.com/172.10.212.52:9042: Error during authentication of user naukCassandra : org.apache.cassandra.exceptions.UnavailableException: Cannot achieve consistency level LOCAL_ONE
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1225)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:552)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175)
at com.ie.naukri.activity_tracker.main.ApplicationConfig.main(ApplicationConfig.java:25)
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:497)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)

Answer 1

所以我的猜测是您的 SYSTEM_AUTH 密钥空间的 RF=1 并且出现故障的节点具有您的身份验证记录（用户行）。您可以尝试将数据驻留在可用主机上的其他用户进行连接，然后删除/重新创建受影响的用户等。通常，确保将 SYSTEM_AUTH 表复制到高于 1 的值（对于 3 个节点，我会简单地将其更改为 3，但您可以执行 2，并且希望对于单个节点故障是安全的）。