I am using Sentinel mode for Redis. I am using Redisson Client version 3.9.1
<dependencies><dependency><groupId>org.redisson</groupId><artifactId>redisson-spring-data-20</artifactId><version>${redisson-version}</version></dependency><dependency><groupId>org.redisson</groupId><artifactId>redisson</artifactId><version>${redisson-version}</version></dependency></dependencies>The configuration of Sentinel using Redisson:
@EnableCachingpublic class RedisCache { @Autowired private ObjectMapper objectMapper; @Bean public RedissonClient redissonClient() { Config config = new Config(); config.setCodec(new JsonJacksonCodec(objectMapper)); config.useSentinelServers() .setMasterName("redis-master") .addSentinelAddress("redis://localhost:26378") .addSentinelAddress("redis://localhost:26379"); return Redisson.create(config); } @Bean public RedissonConnectionFactory redissonConnectionFactory(RedissonClient redisson) { return new RedissonConnectionFactory(redisson); }}I am running two sentinel servers and one Redis master with no slave.This is just a setup on my local environment.
Output of some commands:
redis-cli -p 26379127.0.0.1:26379> SENTINEL get-master-addr-by-name redis-master1) "127.0.0.1"2) "6379"redis-cli -p 26378127.0.0.1:26378> SENTINEL get-master-addr-by-name redis-master1) "127.0.0.1"2) "6379"Whenever I am running my Spring Boot Application, I get the following error:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redissonClient' defined in class path resource [xxxx/cache/impl/redis/config/RedisCache.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.redisson.api.RedissonClient]: Factory method 'redissonClient' threw exception; nested exception is org.redisson.client.RedisConnectionException: At least two sentinels should be defined in Redis configuration!...... at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0 (AbstractBeanFactory.java:317) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton (DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean (AbstractBeanFactory.java:315) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean (AbstractBeanFactory.java:204) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType (ServletContextInitializerBeans.java:226) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType (ServletContextInitializerBeans.java:214) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addServletContextInitializerBeans (ServletContextInitializerBeans.java:91) at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init> (ServletContextInitializerBeans.java:80) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans (ServletWebServerApplicationContext.java:250) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize (ServletWebServerApplicationContext.java:237) at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup (TomcatStarter.java:54) at org.apache.catalina.core.StandardContext.startInternal (StandardContext.java:5245) at org.apache.catalina.util.LifecycleBase.start (LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call (ContainerBase.java:1420) at org.apache.catalina.core.ContainerBase$StartChild.call (ContainerBase.java:1410) at java.util.concurrent.FutureTask.run (FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624) at java.lang.Thread.run (Thread.java:748) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 22.566 s [INFO] Finished at: 2018-12-07T13:44:14+05:30 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.1.1.RELEASE:run (default-cli) on project xxx: An exception occurred while running. null: InvocationTargetException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthEndpoint' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthEndpoint]: Factory method 'healthEndpoint' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.actuate.autoconfigure.redis.RedisHealthIndicatorConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redissonConnectionFactory' defined in class path resource [xxxxxxx/cache/impl/redis/config/RedisCache.class]: Unsatisfied dependency expressed through method 'redissonConnectionFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redissonClient' defined in class path resource [xxxxxx/cache/impl/redis/config/RedisCache.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.redisson.api.RedissonClient]: Factory method 'redissonClient' threw exception; nested exception is org.redisson.client.RedisConnectionException: At least two sentinels should be defined in Redis configuration!How do I resolve this error?
PS: I have tried master-slave configuration also, with one sentinel attached to the host and other one attached to the slave, but the error remains the same. I have tried sentinels running on different local machines with different private IPs, but the error remains the same.Tried with 3 sentinel servers, no benefits.