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DB Connect MySQL Connection

madhav_dholakia
Contributor
‎05-17-2021 04:20 AM

Hi,

I am trying to create a new MySQL Connection in DB Connect

  • Driver installed : 5.1
  • Application using JDK7 and java MySQL connector version - 5.1.18
  • User used for creating this connection is Read-Only

When I add all the required fields and click on save, it gives the "there was an error processing your request" message.

File splunk_app_db_connect_server.log shows the below error:

 

2021-05-17 11:06:28.239 +0000  [dw-2337144 - POST /api/connections/status] ERROR io.dropwizard.jersey.errors.LoggingExceptionMapper - Error handling a request: f78a9008d0c2e4bb
java.lang.NullPointerException: null
	at com.splunk.dbx.connector.logger.AuditLogger.replace(AuditLogger.java:50)
	at com.splunk.dbx.connector.logger.AuditLogger.error(AuditLogger.java:44)
	at com.splunk.dbx.server.api.service.database.impl.DatabaseMetadataServiceImpl.getStatus(DatabaseMetadataServiceImpl.java:159)
	at com.splunk.dbx.server.api.service.database.impl.DatabaseMetadataServiceImpl.getConnectionStatus(DatabaseMetadataServiceImpl.java:116)
	at com.splunk.dbx.server.api.resource.ConnectionResource.getConnectionStatusOfEntity(ConnectionResource.java:72)
	at sun.reflect.GeneratedMethodAccessor266.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at io.dropwizard.jetty.NonblockingServletHolder.handle(NonblockingServletHolder.java:50)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1617)
	at io.dropwizard.servlets.ThreadNameFilter.doFilter(ThreadNameFilter.java:35)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.handle(AllowedMethodsFilter.java:47)
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.doFilter(AllowedMethodsFilter.java:41)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)
	at com.splunk.dbx.server.api.filter.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:30)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1604)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1297)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1212)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:249)
	at io.dropwizard.jetty.RoutingHandler.handle(RoutingHandler.java:52)
	at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:717)
	at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:54)
	at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:173)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:500)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:388)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
	at java.lang.Thread.run(Thread.java:748)

 

 Can you please suggest how this can be resolved?

Edit 1: on some of the other answers, I read it could be because of invalid db user creds/access rights issue but I have tries login using the same creds through MySQL Workbench and it works fine.

Thank you.

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s2_splunk
Splunk Employee
Splunk Employee
‎05-17-2021 11:21 AM

Which version of DBConnect are you using?

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madhav_dholakia
Contributor
‎05-17-2021 11:54 PM

Hi @s2_splunk,

It is 3.3.0

Thank you.

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s2_splunk
Splunk Employee
Splunk Employee
‎05-18-2021 08:33 AM

3.3. had known issue DBX-5099 that matches your symptoms. Please update the app to the latest version (3.5) and try again.

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madhav_dholakia
Contributor
‎05-23-2021 10:45 PM

Thanks, @s2_splunk - I have requested Splunk Support to upgrade the DBX version (we are using Splunk Cloud).

Once it is done, I will check this again and share feedback.

Thank you.

0 Karma
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madhav_dholakia
Contributor
‎05-26-2021 03:45 AM

Hi @s2_splunk - DBX is now upgraded and on saving the connection, it is giving a message as shown below:

Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

Edit: JDBC URL includes below params:

 

useLegacyDateTimeCode=false&serverTimezone=Europe/London

 

Can you please suggest further? Thank you. 

 

java.net.SocketTimeoutException: connect timed out
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:607)
	at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
	at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
	at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2203)
	at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2236)
	at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2035)
	at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:790)
	at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
	at sun.reflect.GeneratedConstructorAccessor81.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:400)
	at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:330)
	at com.splunk.dbx.service.driver.DelegatingDriver.connect(DelegatingDriver.java:23)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:358)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:477)
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:560)
	at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
	at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112)
	at com.splunk.dbx.connector.ConnectorFactory.getConnectionFromPool(ConnectorFactory.java:201)
	at com.splunk.dbx.connector.ConnectorFactory.getConnection(ConnectorFactory.java:189)
	at com.splunk.dbx.connector.ConnectorFactory.create(ConnectorFactory.java:174)
	at com.splunk.dbx.server.api.service.database.impl.DatabaseMetadataServiceImpl.getStatus(DatabaseMetadataServiceImpl.java:138)
	at com.splunk.dbx.server.api.service.database.impl.DatabaseMetadataServiceImpl.getConnectionStatus(DatabaseMetadataServiceImpl.java:102)
	at com.splunk.dbx.server.api.resource.ConnectionResource.getConnectionStatus(ConnectionResource.java:60)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at io.dropwizard.jetty.NonblockingServletHolder.handle(NonblockingServletHolder.java:50)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1651)
	at io.dropwizard.servlets.ThreadNameFilter.doFilter(ThreadNameFilter.java:35)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1638)
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.handle(AllowedMethodsFilter.java:47)
	at io.dropwizard.jersey.filter.AllowedMethodsFilter.doFilter(AllowedMethodsFilter.java:41)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1638)
	at com.splunk.dbx.server.api.filter.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:30)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1638)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:567)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1377)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:507)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:249)
	at io.dropwizard.jetty.RoutingHandler.handle(RoutingHandler.java:52)
	at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:767)
	at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:54)
	at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:173)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:501)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
	at java.lang.Thread.run(Thread.java:748)

 

 

 

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s2_splunk
Splunk Employee
Splunk Employee
‎05-26-2021 10:37 AM

 

 

java.net.SocketTimeoutException: connect timed out

 

is a pretty unspecific error message. It suggests that your DB host can be reached, but something else is amiss. You say you are using SplunkCloud? Where is the database located that you are trying to connect to? Are you sure that bidirectional communication between your DBX instance (Cloud SH?) and your database server is possible (firewalls/proxies/etc.). Do you see any log messages on your mySQL server side when validating the connection? Are you using mySQL V8 and driver version 8.0.15?

 

Reply

madhav_dholakia
Contributor
‎05-26-2021 11:57 PM

Hi @s2_splunk ,

Please see below the driver details:

  • Driver installed : 5.1
  • Application using JDK7 and java MySQL connector version - 5.1.18

We are using Splunk Cloud and the database is located on a different AWS server. Sorry, but can you please suggest how this can be checked: "Are you sure that bidirectional communication between your DBX instance (Cloud SH?) and your database server is possible (firewalls/proxies/etc.)."

Thank you.

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madhav_dholakia
Contributor
‎06-24-2021 11:39 PM

Hi,

This was resolved with the help of Splunk Cloud Support by opening jdbc connection port and allowlisted the Application IP.

Thank you.

0 Karma
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s2_splunk
Splunk Employee
Splunk Employee
‎06-25-2021 04:06 PM

Excellent! Everything works better when everything can talk to each other. Thank you for closing the loop!

 

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