MYSQL сбрасывает соединение

Question

Я использую CAS 3.4.5 на веб-сервере Apache tomcat 6 с бэкэнд, являющимся mysql 5.1.37. Я подключаюсь из CAS, который написан в Java Spring Framework для Backend с использованием mysql-jdbc-connector версии 5.12.

С перерывами mysql закрывает постоянное соединение, которое требует CAS. Есть ли способ, которым это можно было бы избежать. Любые идеи могут быть действительно оценены.

Я вставляю ошибку, которую получает CAS, когда mysql сбрасывает соединение.

org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet cas threw exception 
java.net.SocketException: Connection reset 
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96) 
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136) 
     at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) 
     at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123) 
     at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3298) 
     at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1941) 
     at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114) 
     at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2696) 
     at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2105) 
     at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2264) 
     at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96) 
     at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96) 
     at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:643) 
     at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:586) 
     at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:636) 
     at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:665) 
     at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:673) 
     at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:728) 
     at org.springframework.jdbc.core.JdbcTemplate.queryForObject(JdbcTemplate.java:744) 
     at org.springframework.jdbc.core.simple.SimpleJdbcTemplate.queryForObject(SimpleJdbcTemplate.java:143) 
     at org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationHandler.authenticateUsernamePasswordInternal(QueryDatabaseAuthenticationHandler.java:38) 
     at org.jasig.cas.authentication.handler.support.AbstractUsernamePasswordAuthenticationHandler.doAuthentication(AbstractUsernamePasswordAuthenticationHandler.java:58) 
     at org.jasig.cas.authentication.handler.support.AbstractPreAndPostProcessingAuthenticationHandler.authenticate_aroundBody2(AbstractPreAndPostProcessingAuthenticationHandler.java:72) 
     at org.jasig.cas.authentication.handler.support.AbstractPreAndPostProcessingAuthenticationHandler.authenticate_aroundBody3$advice(AbstractPreAndPostProcessingAuthenticationHandler.java:44) 
     at org.jasig.cas.authentication.handler.support.AbstractPreAndPostProcessingAuthenticationHandler.authenticate(AbstractPreAndPostProcessingAuthenticationHandler.java:1) 
     at org.jasig.cas.authentication.AuthenticationManagerImpl.authenticateAndObtainPrincipal(AuthenticationManagerImpl.java:78) 
     at org.jasig.cas.authentication.AbstractAuthenticationManager.authenticate_aroundBody0(AbstractAuthenticationManager.java:42) 
     at org.jasig.cas.authentication.AbstractAuthenticationManager.authenticate_aroundBody1$advice(AbstractAuthenticationManager.java:44) 
     at org.jasig.cas.authentication.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:1) 
     at org.jasig.cas.CentralAuthenticationServiceImpl.createTicketGrantingTicket_aroundBody10(CentralAuthenticationServiceImpl.java:413) 
     at org.jasig.cas.CentralAuthenticationServiceImpl.createTicketGrantingTicket_aroundBody11$advice(CentralAuthenticationServiceImpl.java:44) 
     at org.jasig.cas.CentralAuthenticationServiceImpl.createTicketGrantingTicket(CentralAuthenticationServiceImpl.java:1) 
     at sun.reflect.GeneratedMethodAccessor67.invoke(Unknown Source) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 
     at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80) 
     at org.perf4j.aop.AbstractTimingAspect.doPerfLogging(AbstractTimingAspect.java:71) 
     at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621) 
     at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610) 
     at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161) 
     at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 
     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) 
     at $Proxy26.createTicketGrantingTicket(Unknown Source) 
     at org.jasig.cas.web.flow.AuthenticationViaFormAction.submit_aroundBody2(AuthenticationViaFormAction.java:85) 
     at org.jasig.cas.web.flow.AuthenticationViaFormAction.submit_aroundBody3$advice(AuthenticationViaFormAction.java:44) 
     at org.jasig.cas.web.flow.AuthenticationViaFormAction.submit(AuthenticationViaFormAction.java:1) 
     at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:851) 
     at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1253) 
     at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) 
     at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1329) 
     at ognl.ASTMethod.getValueBody(ASTMethod.java:90) 
     at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) 
     at ognl.SimpleNode.getValue(SimpleNode.java:258) 
     at ognl.ASTChain.getValueBody(ASTChain.java:141) 
     at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) 
     at ognl.SimpleNode.getValue(SimpleNode.java:258) 
     at ognl.Ognl.getValue(Ognl.java:494) 
     at org.springframework.binding.expression.ognl.OgnlExpression.getValue(OgnlExpression.java:85) 
     at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:75) 
     at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188) 
     at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145) 
     at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51) 
     at org.springframework.webflow.engine.ActionState.doEnter(ActionState.java:101) 
     at org.springframework.webflow.engine.State.enter(State.java:194) 
     at org.springframework.webflow.engine.Transition.execute(Transition.java:227) 
     at org.springframework.webflow.engine.impl.FlowExecutionImpl.execute(FlowExecutionImpl.java:391) 
     at org.springframework.webflow.engine.impl.RequestControlContextImpl.execute(RequestControlContextImpl.java:214) 
     at org.springframework.webflow.engine.TransitionableState.handleEvent(TransitionableState.java:119) 
     at org.springframework.webflow.engine.Flow.handleEvent(Flow.java:555) 
at org.springframework.webflow.engine.impl.FlowExecutionImpl.handleEvent(FlowExecutionImpl.java:386) 
     at org.springframework.webflow.engine.impl.RequestControlContextImpl.handleEvent(RequestControlContextImpl.java:210) 
     at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:254) 
     at org.springframework.webflow.engine.ViewState.resume(ViewState.java:218) 
     at org.springframework.webflow.engine.Flow.resume(Flow.java:545) 
     at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:259) 
     at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169) 
     at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183) 
     at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) 
     at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) 
     at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
     at org.jasig.cas.web.init.SafeDispatcherServlet.service_aroundBody2(SafeDispatcherServlet.java:115) 
     at org.jasig.cas.web.init.SafeDispatcherServlet.service_aroundBody3$advice(SafeDispatcherServlet.java:44) 
     at org.jasig.cas.web.init.SafeDispatcherServlet.service(SafeDispatcherServlet.java:1) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at com.github.inspektr.common.web.ClientInfoThreadLocalFilter.doFilter(ClientInfoThreadLocalFilter.java:46) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) 
     at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) 
     at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237) 
     at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) 
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) 
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) 
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
     at java.lang.Thread.run(Thread.java:662) 

Answer 1

Вы можете попробовать установить wait_timeout к максимуму на сервере MySQL:

Количество секунд, сервер ожидает активности на неинтерактивного соединения перед его закрытием. Этот тайм-аут применяется только к соединениям сокетов TCP/IP и Unix, а не к соединениям, выполненным с использованием именованных каналов, или к общей памяти.