CDH启动出现cloudera-scm-server一直挂掉

  公司服务器停电 ,在启动CDH服务过程中cloudera-scm-server启动一会就会挂掉 ,查看日志出现这样的错误

Exception in thread "main" 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$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:392)
	at com.cloudera.server.cmf.Main.(Main.java:242)
	at com.cloudera.server.cmf.Main.main(Main.java:216)
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: org.hibernate.exception.GenericJDBCException: Could not open connection
	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













WARN com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2:com.mchange.v2.resourcepool.BasicResourcePool: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@64e026e -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (5). Last acquisition attempt exception:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Access denied for user ''@'localhost' to database 'null'
        at sun.reflect.GeneratedConstructorAccessor11.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
        at com.mysql.jdbc.Util.getInstance(Util.java:408)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:873)
        at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1710)
        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226)
        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2198)
        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2229)
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2024)
        at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:779)
        at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47)
        at sun.reflect.GeneratedConstructorAccessor4.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
        at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
        at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)

最终发现时mysql数据库的问题 , 

• 安装服务 yum install mysql-server
• 开启服务 service mysqld start
• 创建用户名 mysqladmin -uroot password root 第一个root是用户名，第二个root是密码
• 登录 mysql -uroot -proot
• 设置开机启动 chkconfig mysqld on

如果yum install mysql-server安装出现问题:没有可用包则

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm


rpm -ivh mysql-community-release-el7-5.noarch.rpm

ls -1 /etc/yum.repos.d/mysql-community*

yum install mysql-server

可能会出现Column count of mysql.proc is wrong. Expected 20....问题 ,由于你曾经升级过数据库,升级完后未使用mysql_upgrade升级数据结构造成的。

执行  mysql_upgrade

进入 

cd /cm-5.12.1/share/cmf/schema

ls

drwxr-xr-x 4 1106 4001  8192 Aug 19  2017 mysql
drwxr-xr-x 4 1106 4001  8192 Aug 19  2017 oracle
drwxr-xr-x 4 1106 4001 12288 Aug 19  2017 postgresql
-rw-r--r-- 1 1106 4001  1437 Aug 19  2017 scm_database_functions.sh
-rwxr-xr-x 1 1106 4001 12723 Aug 19  2017 scm_prepare_database.sh

执行
scm_prepare_database.sh mysql  -uroot -p --scm-host localhost scm scm scm_password

然后再次启动cloudera-scm-server ,成功