CDH断电后cloudera-scm-server启动报错
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报错背景：
CDH未关闭的情况下，Linux断电，导致cloudera-scm-server无法启动。
报错现象：
输入启动命令之后：/opt/cm-5.15.1/etc/init.d/cloudera-scm-server start，
cloudera-scm-server 会启动，但是几秒中之后就会死掉，显示：cloudera-scm-server 已死，但 pid 文件存在。
于是查看日志文件：vim /opt/cm-5.15.1/log/cloudera-scm-server/cloudera-scm-server.log，
复制代码 以上是关于CDH断电后cloudera-scm-server启动报错的主要内容，如果未能解决你的问题，请参考以下文章 小记--------CDH版本启动cloudera manager UI界面 解决CDH的web界面使用nginx代理一些静态文件无法加载 service cloudera-scm-server restart报错 Unable to retrieve remote parcel repository manifest
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: org.hibernate.exception.GenericJDBCException: Could not open connection
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
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