[bigdata] 启动CM出现 “JDBC Driver class not found: com.mysql.jdbc.Driver” 以及“Error creating bean with name 'serverLogFetcherImpl'”问题的解决方法

问题：“JDBC Driver class not found: com.mysql.jdbc.Driver”

通过以下命令启动cm

[root@hadoop1 ~]# /etc/init.d/cloudera-scm-server start

通过ps查看进程可以看到进程已启动，如下：

[root@hadoop1 ~]# ps -ef | grep cloudera

root 20325 1 0 15:02 pts/0 00:00:00 su cloudera-scm -s /bin/bash -c nohup /usr/sbin/cmf-server

498 20327 20325 99 15:02 ? 00:00:37 /opt/app/jdk1.7.0_45/bin/java -cp .:lib/*:/usr/share/java/mysql-connector-java.jar:/usr/share/java/oracle-connector-java.jar -server -Dlog4j.configuration=file:/etc/cloudera-scm-server/log4j.properties -Dfile.encoding=UTF-8 -Dcmf.root.logger=INFO,LOGFILE -Dcmf.log.dir=/var/log/cloudera-scm-server -Dcmf.log.file=cloudera-scm-server.log -Dcmf.jetty.threshhold=WARN -Dcmf.schema.dir=/usr/share/cmf/schema -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dpython.home=/usr/share/cmf/python -XX:+UseConcMarkSweepGC -XX:-CMSConcurrentMTEnabled -XX:+UseParNewGC -XX:+HeapDumpOnOutOfMemoryError -Xmx2G -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp -XX:OnOutOfMemoryError=kill -9 %p com.cloudera.server.cmf.Main

但一段时间后，进程退出。cm web页面http://ip:7180/cmf/login 无法访问，无7180端口启用。

通过/var/log/cloudera-scm-server/cloudera-scm-server.log查看

2015-07-15 23:41:35,677 ERROR main:com.cloudera.server.cmf.Main: Server failed.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.cloudera.server.cmf.TrialState': Cannot resolve reference to bean 'entityManagerFactoryBean' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactoryBean': FactoryBean threw exception on object creation; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: cmf.server] Unable to build EntityManagerFactory

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)

at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:616)

at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:148)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)

at com.cloudera.server.cmf.Main.bootstrapSpringContext(Main.java:344)

at com.cloudera.server.cmf.Main.<init>(Main.java:220)

at com.cloudera.server.cmf.Main.main(Main.java:194)

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactoryBean': FactoryBean threw exception on object creation; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: cmf.server] Unable to build EntityManagerFactory

at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:149)

at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)

at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1440)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:247)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)

at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)

... 17 more

Caused by: javax.persistence.PersistenceException: [PersistenceUnit: cmf.server] Unable to build EntityManagerFactory

at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:924)

at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:899)

at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:59)

at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63)

at com.cloudera.enterprise.CommonMain.setupHibernate(CommonMain.java:171)

at com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean.getObject(EntityManagerFactoryBean.java:107)

at com.cloudera.server.cmf.bootstrap.EntityManagerFactoryBean.getObject(EntityManagerFactoryBean.java:60)

at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)

... 22 more

Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: HHH010003: JDBC Driver class not found: com.mysql.jdbc.Driver

at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:142)

at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)

at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:223)

at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:89)

at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)

at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)

at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1797)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1755)

at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96)

at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)

... 29 more

Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.mysql.jdbc.Driver]

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:149)

at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.configure(C3P0ConnectionProvider.java:139)

... 41 more

Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.mysql.jdbc.Driver

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:296)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:270)

at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:146)

... 42 more

MySQL驱动 mysql-connector-java 确定已经安装

解决方法：

找到MySQL驱动的jar路径 /usr/share/java/mysql-connector-java.jar 将该路径加入CLASSPATH环境变量，问题解决。

问题：“Error creating bean with name 'serverLogFetcherImpl'”

现象同上。

查看日志：/var/log/cloudera-scm-server/cloudera-scm-server.out

Exception in thread "main" org.springframework.beans.factory.access.BootstrapException: Unable to return specified BeanFactory instance: factory key [rootContext], from group with resource name [classpath:webapp/WEB-INF/spring/beanRefFactory.xml]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'rootContext' defined in class path resource [webapp/WEB-INF/spring/beanRefFactory.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverLogFetcherImpl' defined in URL [jar:file:/usr/share/cmf/lib/server-5.4.1.jar!/com/cloudera/server/cmf/log/components/ServerLogFetcherImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.cloudera.server.cmf.log.components.ServerLogFetcherImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException

at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:409)

at com.cloudera.server.cmf.Main.findBeanFactory(Main.java:407)

at com.cloudera.server.cmf.Main.findRootApplicationContext(Main.java:402)

at com.cloudera.server.cmf.Main.<init>(Main.java:239)

at com.cloudera.server.cmf.Main.main(Main.java:194)

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'rootContext' defined in class path resource [webapp/WEB-INF/spring/beanRefFactory.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverLogFetcherImpl' defined in URL [jar:file:/usr/share/cmf/lib/server-5.4.1.jar!/com/cloudera/server/cmf/log/components/ServerLogFetcherImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.cloudera.server.cmf.log.components.ServerLogFetcherImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException

at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)

at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1079)

at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:397)

... 4 more

Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverLogFetcherImpl' defined in URL [jar:file:/usr/share/cmf/lib/server-5.4.1.jar!/com/cloudera/server/cmf/log/components/ServerLogFetcherImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.cloudera.server.cmf.log.components.ServerLogFetcherImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException

at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:141)

at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:108)

at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:280)

... 14 more

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serverLogFetcherImpl' defined in URL [jar:file:/usr/share/cmf/lib/server-5.4.1.jar!/com/cloudera/server/cmf/log/components/ServerLogFetcherImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.cloudera.server.cmf.log.components.ServerLogFetcherImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException