Elastic
zookeeper作为注册中心
1.配置如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=""xmlns:xsi="" xmlns:reg=""xmlns:job=""xsi:schemaLocation="://www.springframework/schema/beans/spring-beans.xsd://www.dangdang/schema/ddframe/reg/reg.xsd://www.dangdang/schema/ddframe/job/job.xsd"><!-- 配置注册中心 ，任务的信息都会在zk中存储 --><reg:zookeeper id="regCenter" server-lists="192.168.206.144:2181"namespace="test-job" base-sleep-time-milliseconds="1000"max-sleep-time-milliseconds="3000" max-retries="4" /><!-- 配置简单作业 --><!-- 分片为1，即不需要分片；支持覆盖，即会用本次的配置覆盖缓存在zk中的配置 --><job:simple id="testTask" class="cn.sanishan.ss.job.demo.DemoSimpleJob"registry-center-ref="regCenter" cron="0 10 * * * ?"sharding-total-count="1" overwrite="true"></job:simple>
</beans>2.启动报错如下：
2017-08-31 17:22:12,614 [main] [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Eagerly caching bean 'regCenter' to allow for resolving potential circular references
2017-08-31 17:22:12,614 [main] [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Invoking init method 'init' on bean with name 'regCenter'
2017-08-31 17:22:31,230 [main] [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Retrieved dependent beans for bean '(inner bean)#6fd02e5': [regCenter]
2017-08-31 17:22:31,230 [main] [org.springframework.context.support.ClassPathXmlApplicationContext]-[WARN] Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'regCenter': Invocation of init method failed; nested exception is com.dangdang.ddframe.job.reg.exception.RegException: org.apache.zookeeper.KeeperException$OperationTimeoutException: KeeperErrorCode = OperationTimeout
2017-08-31 17:22:31,231 [main] [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@35fb3008: defining beans [regCenter,com.dangdang.ddframe.job.lite.spring.api.SpringJobScheduler#0]; root of factory hierarchy
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'regCenter': Invocation of init method failed; nested exception is com.dangdang.ddframe.job.reg.exception.RegException: org.apache.zookeeper.KeeperException$OperationTimeoutException: KeeperErrorCode = OperationTimeoutat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)at cn.sanishan.ss.job.demo.StartBySpring.main(StartBySpring.java:8)
Caused by: com.dangdang.ddframe.job.reg.exception.RegException: org.apache.zookeeper.KeeperException$OperationTimeoutException: KeeperErrorCode = OperationTimeoutat com.dangdang.ddframe.job.reg.exception.RegExceptionHandler.handleException(RegExceptionHandler.java:52)at com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter.init(ZookeeperRegistryCenter.java:107)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)at java.lang.reflect.Method.invoke(Unknown Source)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1758)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1695)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)... 12 more
Caused by: org.apache.zookeeper.KeeperException$OperationTimeoutException: KeeperErrorCode = OperationTimeoutat com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter.init(ZookeeperRegistryCenter.java:102)... 19 more1.zookeeper服务器防火墙问题，解决方案：
（1）关闭防火墙
命令：
service iptables stop参考：
2.修改连接重试次数，一般建议配置3次，如果连接失败，增加重试次数就可以了
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