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kubernetes backend pod can not connect to database [closed]

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I have java backend pod and mysql statfulset db. when I see logs of backend pod, there is an error, It can not obtain connection from database. pods behind the db service Running and Ready. not able to connect as user postgresql to that hostname from some other pod. ERROR 2003 (HY000): Can't connect to MySQL server on 'db:3306' (111)
WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.
[INFO ] 2023-02-06 18:26:01.476 [vert.x-eventloop-thread-1] OpenApiRouterBuilder - OpenApi has been loaded
[INFO ] 2023-02-06 18:26:01.540 [vert.x-eventloop-thread-1] MainServerVerticle - Started REST api server on port: 3333
[INFO ] 2023-02-06 18:26:01.546 [vert.x-eventloop-thread-0] WebsocketServerVerticle - Started server for websockets on port: 3334
[INFO ] 2023-02-06 18:26:01.565 [vert.x-eventloop-thread-1] MainServerVerticle - All verticles have been deployed
[ERROR] 2023-02-06 18:26:01.688 [vert.x-eventloop-thread-1] FlywayRunner - org.flywaydb.core.internal.exception.FlywaySqlException: Unable to obtain connection from database (jdbc:mysql://db:3306/examodb?allowPublicKeyRetrieval=true&useSSL=false) for user 'postgresql': 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.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SQL State : 08S01
Error Code : 0
Message : 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.
[WARN ] 2023-02-06 18:26:01.692 [vert.x-eventloop-thread-1] AbstractEventExecutor - A task raised an exception. Task: io.vertx.core.impl.future.FutureBase$$Lambda$155/0x0000000800d01810#28bb3e29
org.flywaydb.core.internal.exception.FlywaySqlException: Unable to obtain connection from database (jdbc:mysql://db:3306/examodb?allowPublicKeyRetrieval=true&useSSL=false) for user 'postgresql': Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SQL State : 08S01
Error Code : 0
Message : Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:67) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.JdbcConnectionFactory.<init>(JdbcConnectionFactory.java:74) ~[app.jar:?]
at org.flywaydb.core.FlywayExecutor.execute(FlywayExecutor.java:136) ~[app.jar:?]
at org.flywaydb.core.Flyway.repair(Flyway.java:330) ~[app.jar:?]
at examo.db.migration.FlywayRunner.migrate(FlywayRunner.java:19) ~[app.jar:?]
at examo.rest.server.MainServerVerticle.lambda$start$12(MainServerVerticle.java:113) ~[app.jar:?]
at io.vertx.core.impl.future.FutureImpl$1.onSuccess(FutureImpl.java:91) ~[app.jar:?]
at io.vertx.core.impl.future.FutureImpl$ListenerArray.onSuccess(FutureImpl.java:262) ~[app.jar:?]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:60) ~[app.jar:?]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:211) ~[app.jar:?]
at io.vertx.core.impl.future.Composition$1.onSuccess(Composition.java:62) ~[app.jar:?]
at io.vertx.core.impl.future.FutureBase.emitSuccess(FutureBase.java:60) ~[app.jar:?]
at io.vertx.core.impl.future.FutureImpl.tryComplete(FutureImpl.java:211) ~[app.jar:?]
at io.vertx.core.impl.future.Mapping.onSuccess(Mapping.java:40) ~[app.jar:?]
at io.vertx.core.impl.future.FutureBase.lambda$emitSuccess$0(FutureBase.java:54) ~[app.jar:?]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) [app.jar:?]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469) [app.jar:?]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:503) [app.jar:?]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986) [app.jar:?]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [app.jar:?]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [app.jar:?]
at java.lang.Thread.run(Thread.java:832) [?:?]
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: 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.
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[app.jar:?]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:832) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) ~[app.jar:?]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnectionFromDriver(DriverDataSource.java:259) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnection(DriverDataSource.java:223) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:52) ~[app.jar:?]
... 21 more
Caused by: com.mysql.cj.exceptions.CJCommunicationsException: 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.
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:64) ~[?:?]
at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500) ~[?:?]
at java.lang.reflect.Constructor.newInstance(Constructor.java:481) ~[?:?]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[app.jar:?]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[app.jar:?]
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) ~[app.jar:?]
at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[app.jar:?]
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:91) ~[app.jar:?]
at com.mysql.cj.NativeSession.connect(NativeSession.java:152) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:952) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:822) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) ~[app.jar:?]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnectionFromDriver(DriverDataSource.java:259) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnection(DriverDataSource.java:223) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:52) ~[app.jar:?]
... 21 more
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.Net.connect0(Native Method) ~[?:?]
at sun.nio.ch.Net.connect(Net.java:574) ~[?:?]
at sun.nio.ch.Net.connect(Net.java:563) ~[?:?]
at sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) ~[?:?]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:333) ~[?:?]
at java.net.Socket.connect(Socket.java:648) ~[?:?]
at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:173) ~[app.jar:?]
at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:65) ~[app.jar:?]
at com.mysql.cj.NativeSession.connect(NativeSession.java:152) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:952) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:822) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456) ~[app.jar:?]
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240) ~[app.jar:?]
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnectionFromDriver(DriverDataSource.java:259) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.DriverDataSource.getConnection(DriverDataSource.java:223) ~[app.jar:?]
at org.flywaydb.core.internal.jdbc.JdbcUtils.openConnection(JdbcUtils.java:52) ~[app.jar:?]
... 21 more
db service name is db. I have secret attached to backend and db, where are DATABASE name, PASSWORD, ROOT_PASSWORD, MYSQL_USER, host and port. Site uses SSL certificates.
I expect to connect backend to db. First, I had error, saying unknown host. Changed db service name and now new error, this error. Is it possible, that not having SSL certificate for my resources give me this error

Mysql Random Communications Link Failure when connecting via JDBC from Data Fusion

I have pipelines on a Data Fusion instance which connects & fetches data from Mysql and inserts i into Big Query. The problem is I randomly receive this error
Communications link failure The last packet successfully received from the server was 20,103 milliseconds ago. The last packet sent successfully to the server was 20,104 milliseconds ago
And when I say random, it is like 2 pipelines run at the same time when succeeds and other one fails. When I just re-run the failed pipeline without any changes, it just works, so there is no pattern.
Here is the full error :
Application diagnostics message: User class threw exception: org.apache.spark.SparkException: Job aborted. at org.apache.spark.internal.io.SparkHadoopWriter$.write(SparkHadoopWriter.scala:105) at
org.apache.spark.rdd.PairRDDFunctions.$anonfun$saveAsNewAPIHadoopDataset$1(PairRDDFunctions.scala:1077) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) at org.apache.spark.rdd.RDD.withScope(RDD.scala:414) at org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopDataset(PairRDDFunctions.scala:1075) at org.apache.spark.api.java.JavaPairRDD.saveAsNewAPIHadoopDataset(JavaPairRDD.scala:833) at
io.cdap.cdap.etl.spark.batch.RDDUtils.saveHadoopDataset(RDDUtils.java:58) at io.cdap.cdap.etl.spark.batch.RDDUtils.saveUsingOutputFormat(RDDUtils.java:47) at io.cdap.cdap.etl.spark.batch.SparkBatchSinkFactory.writeFromRDD(SparkBatchSinkFactory.java:198) at
io.cdap.cdap.etl.spark.batch.BaseRDDCollection$1.run(BaseRDDCollection.java:238) at io.cdap.cdap.etl.spark.SparkPipelineRunner.runPipeline(SparkPipelineRunner.java:344) at io.cdap.cdap.etl.spark.batch.BatchSparkPipelineDriver.run(BatchSparkPipelineDriver.java:235) at io.cdap.cdap.app.runtime.spark.SparkTransactional$2.run(SparkTransactional.java:236) at io.cdap.cdap.app.runtime.spark.SparkTransactional.execute(SparkTransactional.java:208) at io.cdap.cdap.app.runtime.spark.SparkTransactional.execute(SparkTransactional.java:138) at
io.cdap.cdap.app.runtime.spark.AbstractSparkExecutionContext.execute(AbstractSparkExecutionContext.scala:231) at io.cdap.cdap.app.runtime.spark.SerializableSparkExecutionContext.execute(SerializableSparkExecutionContext.scala:63) at io.cdap.cdap.app.runtime.spark.DefaultJavaSparkExecutionContext.execute(DefaultJavaSparkExecutionContext.scala:94) at io.cdap.cdap.api.Transactionals.execute(Transactionals.java:63) at io.cdap.cdap.etl.spark.batch.BatchSparkPipelineDriver.run(BatchSparkPipelineDriver.java:162) at
io.cdap.cdap.app.runtime.spark.SparkMainWrapper$.main(SparkMainWrapper.scala:88) at io.cdap.cdap.app.runtime.spark.SparkMainWrapper.main(SparkMainWrapper.scala) 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.apache.spark.deploy.yarn.ApplicationMaster$$anon$2.run(ApplicationMaster.scala:732) Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 5 in stage 0.0 failed 4 times, most recent failure: Lost task 5.3 in stage 0.0 (TID 9)
*** executor 3): org.apache.spark.SparkException: Task failed while writing rows at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:162) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$write$1(SparkHadoopWriter.scala:88) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:131) at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:505) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1439) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:508) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.io.IOException: SQLException in nextKeyValue at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:240) at
io.cdap.plugin.db.batch.source.DataDrivenETLDBInputFormat$1.nextKeyValue(DataDrivenETLDBInputFormat.java:142) at
io.cdap.cdap.etl.spark.io.TrackingRecordReader.nextKeyValue(TrackingRecordReader.java:47) at org.apache.spark.rdd.NewHadoopRDD$$anon$1.hasNext(NewHadoopRDD.scala:247) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37) at
scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$executeTask$1(SparkHadoopWriter.scala:135) at
org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1473) at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:134) ... 9 more Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) at com.mysql.cj.jdbc.ServerPreparedState
ment.serverExecute(ServerPreparedStatement.java:633) at com.mysql.cj.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:417) at
com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003) at
org.apache.hadoop.mapreduce.lib.db.MySQLDataDrivenDBRecordReader.executeQuery(MySQLDataDrivenDBRecordReader.java:49) at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:228) ... 21 more Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at
java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at
com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at
com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:546) at
com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:710) at
com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:649) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:136) at
com.mysql.cj.NativeSession.sendCommand(NativeSession.java:311) at com.mysql.cj.ServerPreparedQuery.sendExecutePacket(ServerPreparedQuery.java:337) at com.mysql.cj.ServerPreparedQuery.serverExecute(ServerPreparedQuery.java:207) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:631) ... 25 more Caused by:
java.net.SocketTimeoutException: Read timed out at
java.net.SocketInputStream.socketRead0(Native Method) at
java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at
java.net.SocketInputStream.read(SocketInputStream.java:171) at java.net.SocketInputStream.read(SocketInputStream.java:141) at
sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:464) at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68) at
sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1346) at
sun.security.ssl.SSLSocketImpl.access$300(SSLSocketImpl.java:73) at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:962) at java.io.FilterInputStream.read(FilterInputStream.java:133) at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:64) at
com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52) at
com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44) at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:540) ... 32 more Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.failJobAndIndependentStages(DAGScheduler.scala:2304) at
org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2(DAGScheduler.scala:2253) at org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2$adapted(DAGScheduler.scala:2252) at
scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62) at
scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55) at
scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:2252) at
org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1(DAGScheduler.scala:1124) at org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1$adapted(DAGScheduler.scala:1124) at
scala.Option.foreach(Option.scala:407) at
org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:1124) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2491) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2433) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2422) at
org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49) at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:902) at org.apache.spark.SparkContext.runJob(SparkContext.scala:2204) at
org.apache.spark.SparkContext.runJob(SparkContext.scala:2225) at
org.apache.spark.SparkContext.runJob(SparkContext.scala:2257) at
org.apache.spark.internal.io.SparkHadoopWriter$.write(SparkHadoopWriter.scala:83) ... 28 more Caused by: org.apache.spark.SparkException: Task failed while writing rows at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:162) at
org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$write$1(SparkHadoopWriter.scala:88) at
org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:131) at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:505) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1439) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:508) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.io.IOException: SQLException in nextKeyValue at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:240) at io.cdap.plugin.db.batch.source.DataDrivenETLDBInputFormat$1.nextKeyValue(DataDrivenETLDBInputFormat.java:142) at
io.cdap.cdap.etl.spark.io.TrackingRecordReader.nextKeyValue(TrackingRecordReader.java:47) at org.apache.spark.rdd.NewHadoopRDD$$anon$1.hasNext(NewHadoopRDD.scala:247) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at
scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$executeTask$1(SparkHadoopWriter.scala:135) at org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1473) at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:134) ... 9 more Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:633) at
com.mysql.cj.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:417) at com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003) at org.apache.hadoop.mapreduce.lib.db.MySQLDataDrivenDBRecordReader.executeQuery(MySQLDataDrivenDBRecordReader.java:49) at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:228) ... 21 more Caused by:
com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at
com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:546) at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:710) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:649) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:136) at
com.mysql.cj.NativeSession.sendCommand(NativeSession.java:311) at com.mysql.cj.ServerPreparedQuery.sendExecutePacket(ServerPreparedQuery.java:337) at
com.mysql.cj.ServerPreparedQuery.serverExecute(ServerPreparedQuery.java:207) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:631) ... 25 more Caused by: java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at
java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.net.SocketInputStream.read(SocketInputStream.java:171) at java.net.SocketInputStream.read(SocketInputStream.java:141) at sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:464) at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68) at
sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1346) at sun.security.ssl.SSLSocketImpl.access$300(SSLSocketImpl.java:73) at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:962) at java.io.FilterInputStream.read(FilterInputStream.java:133) at
com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:64) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHe
ader(TimeTrackingPacketReader.java:52) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54) at
com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44) at
com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:540)```

AmazonS3 Unable to execute HTTP request listObjects minio

I am trying to get the list of objects from minio using
private final AmazonS3 amazonS3Client;
amazonS3Client
.listObjects("bucketname", "[path]").getObjectSummaries()).flatMap(....)
Bean
#Bean
public AmazonS3 s3Client() {
return AmazonS3ClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(
new BasicAWSCredentials(minioConfig().getKey(), minioConfig().getSecret())))
.withClientConfiguration(new ClientConfiguration()).withPathStyleAccessEnabled(true)
.withEndpointConfiguration(
new AwsClientBuilder.EndpointConfiguration(minioConfig().getUrl(), "us-west-2"))
.build();
}
Error
com.amazonaws.SdkClientException: Unable to execute HTTP request: Connect to 10.177.11.21:443 [/10.177.11.21] failed: connect timed out
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1207)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1153)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:802)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:770)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:744)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:704)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:686)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:550)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:530)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5062)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5008)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5002)
at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:898)
at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:872)
at com.localThread.lambda$startPolling$7ebfd9fe$1(WorkerThread.java:75)
at io.vavr.control.Try.of(Try.java:75)
at java.util.function.Predicate.lambda$negate$1(Predicate.java:80)
at io.vavr.collection.List.takeWhile(List.java:1588)
at io.vavr.collection.List.takeUntil(List.java:1581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.http.conn.ConnectTimeoutException: Connect to 10.177.11.21:443 [/10.177.11.21] failed: connect timed out
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:151)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)
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 com.amazonaws.http.conn.ClientConnectionManagerFactory$Handler.invoke(ClientConnectionManagerFactory.java:76)
at com.amazonaws.http.conn.$Proxy149.connect(Unknown Source)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at com.amazonaws.http.apache.client.impl.SdkHttpClient.execute(SdkHttpClient.java:72)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1330)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1145)
... 32 common frames omitted
Caused by: 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 org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:368)
at com.amazonaws.http.conn.ssl.SdkTLSSocketFactory.connectSocket(SdkTLSSocketFactory.java:142)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
... 48 common frames omitted
But when I generate presigned url, it works fine
amazonS3Client
.generatePresignedUrl(new GeneratePresignedUrlRequest("bucketName", "[path]").withMethod(HttpMethod.PUT).withExpiration(new Date(System.currentTimeMillis() + 3600000))).toString()
This code generates the presigned url fine but listObjects fails with connection timeout. This works fine in local, but when I put it in pod in kubernetes, it fails.
I cannot find out what is the issue?

api unable to send the traces to aws-xray deamon in docker container

I have two docker containers for rest API and x-ray daemon up and running. In my local, API sends the traces to x-ray daemon successfully. But unable to achieve in docker.
These steps I have followed.
added was x-ray filter to API to instrument HTTP request
configured 0.0.0.0:2000 as x-ray deamon address to listen all request
pulled AWS x-ray daemon official docker image and run the image in docker
whenever I am trying to hit my API,I am getting exception like this
2020-06-03 08:08:33.799 INFO 1 --- [pool-1-thread-1] c.a.x.s.sampling.pollers.RulePoller : Polling sampling rules.2020-06-03 08:08:34.413 ERROR 1 --- [pool-1-thread-1] c.a.x.s.sampling.pollers.RulePoller : Encountered error polling GetSamplingRules:
com.amazonaws.SdkClientException: Unable to execute HTTP request: Connect to 0.0.0.0:2000 [/0.0.0.0] failed: Connection refused (Connection refused)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1207) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1153) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:802) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:770) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:744) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:704) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:686) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:550) ~[aws-java-sdk-core-1.11.787.jar!/:na] at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:530) ~[aws-java-sdk-core-1.11.787.jar!/:na] at com.amazonaws.services.xray.AWSXRayClient.doInvoke(AWSXRayClient.java:1607) ~[aws-java-sdk-xray-1.11.787.jar!/:na]
at com.amazonaws.services.xray.AWSXRayClient.invoke(AWSXRayClient.java:1574) ~[aws-java-sdk-xray-1.11.787.jar!/:na]
at com.amazonaws.services.xray.AWSXRayClient.invoke(AWSXRayClient.java:1563) ~[aws-java-sdk-xray-1.11.787.jar!/:na]
at com.amazonaws.services.xray.AWSXRayClient.executeGetSamplingRules(AWSXRayClient.java:800) ~[aws-java-sdk-xray-1.11.787.jar!/:na]
at com.amazonaws.services.xray.AWSXRayClient.getSamplingRules(AWSXRayClient.java:771) ~[aws-java-sdk-xray-1.11.787.jar!/:na]
at com.amazonaws.xray.strategy.sampling.pollers.RulePoller.pollRule(RulePoller.java:65) ~[aws-xray-recorder-sdk-core-2.4.0.jar!/:na]
at com.amazonaws.xray.strategy.sampling.pollers.RulePoller.lambda$start$0(RulePoller.java:46) ~[aws-xray-recorder-sdk-core-2.4.0.jar!/:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_212]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) ~[na:1.8.0_212]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) ~[na:1.8.0_212]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) ~[na:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_212]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_212]
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 0.0.0.0:2000 [/0.0.0.0] failed: Connection refused (Connection refused)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) ~[httpclient-4.5.10.jar!/:4.5.10]
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:374) ~[httpclient-4.5.10.jar!/:4.5.10]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
at com.amazonaws.http.conn.ClientConnectionManagerFactory$Handler.invoke(ClientConnectionManagerFactory.java:76) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.conn.$Proxy64.connect(Unknown Source) ~[na:na]
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) ~[httpclient-4.5.10.jar!/:4.5.10]
10]
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) ~[httpclient-4.5.10.jar!/:4.5.10]
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) ~[httpclient-4.5.10.jar!/:4.5.10]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.10.jar!/:4.5.10]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.10.jar!/:4.5.10]
at com.amazonaws.http.apache.client.impl.SdkHttpClient.execute(SdkHttpClient.java:72) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1330) ~[aws-java-sdk-core-1.11.787.jar!/:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1145) ~[aws-java-sdk-core-1.11.787.jar!/:na]
... 21 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_212]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_212]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:204) ~[na:1.8.0_212]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_212]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_212]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_212]
at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) ~[httpclient-4.5.10.jar!/:4.5.10]
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ~[httpclient-4.5.10.jar!/:4.5.10]
... 37 common frames omitted

I solved the problem with this solution:
start the X-Ray container
docker inspect on this container and check which is the IP address
Create an environment variable AWS_XRAY_DAEMON_ADDRESS with the value obtained in previous step (ex: 172.XX.0.X:2000)
start the application container adding -e AWS_XRAY_DAEMON_ADDRESS to pass the variable to the container (ex: docker run -e AWS_XRAY_DAEMON_ADDRESS --name my_containter image_name)
Steps 3 and 4 can be combined by directly passing the IP address to the container (docker run -e AWS_XRAY_DAEMON_ADDRESS=ip_address --name my_containter image_name)

This could be because the app running in the Docker container cannot connect to the X-Ray daemon running locally on the host.
You might find this answer helpful. There is a simple Docker platform example that runs the daemon and the app side-by-side in separate containers. It uses docker-compose networking and the AWS_XRAY_DAEMON_ADDRESS environment variable to connect the app container to the daemon.

On Linux, starting containers in host network solves the issue (using --network host flag when starting container).
Other than that, the AWS_XRAY_DAEMON_ADDRESS environment variable can be used for setting XRay container IP address, as mentioned by #G. Ionut in his answer.

Upon deployment JBoss EAP 6.4.0 cannot find (remote) host names provided in standalone.xml

I am trying to deploy an application provided to me. It should deploy an EAR application on a JBoss EAP server. I ran a configuration script (also given) which applies the following to the standalone.xml file:
For sake of anonymity I have changed the host/-app names to NAME_ONE, NAME_TWO, and APP_NAME.
Mail target:
<outbound-socket-binding name="mail-smtp">
<remote-destination host="NAME_ONE" port="25"/>
</outbound-socket-binding>
Database:
<connection-url>jdbc:postgresql://NAME_TWO/APP_NAME</connection-url>
When I try to run the server it gives me following exceptions:
ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.mail-session.java:jboss/mail/Default: org.jboss.msc.service.StartException in service jboss.mail-session.java:jboss/mail/Default: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1936) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_91]
Caused by: java.lang.RuntimeException: JBAS015451: Unknown host for outbound socket binding configuration 'mail-smtp'.
at org.jboss.as.mail.extension.MailSessionService.getServerSocketAddress(MailSessionService.java:169)
at org.jboss.as.mail.extension.MailSessionService.setServerProps(MailSessionService.java:133)
at org.jboss.as.mail.extension.MailSessionService.getProperties(MailSessionService.java:91)
at org.jboss.as.mail.extension.MailSessionService.start(MailSessionService.java:65)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1980) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1913) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
... 3 more
Caused by: java.net.UnknownHostException: NAME_ONE
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) [rt.jar:1.8.0_91]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) [rt.jar:1.8.0_91]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) [rt.jar:1.8.0_91]
at java.net.InetAddress.getAllByName0(InetAddress.java:1276) [rt.jar:1.8.0_91]
at java.net.InetAddress.getAllByName(InetAddress.java:1192) [rt.jar:1.8.0_91]
at java.net.InetAddress.getAllByName(InetAddress.java:1126) [rt.jar:1.8.0_91]
at java.net.InetAddress.getByName(InetAddress.java:1076) [rt.jar:1.8.0_91]
at org.jboss.as.network.OutboundSocketBinding.getDestinationAddress(OutboundSocketBinding.java:146)
at org.jboss.as.mail.extension.MailSessionService.getServerSocketAddress(MailSessionService.java:167)
... 8 more
When I try to deploy the application a similar exception occurs for both the mail target and the database:
18:30:17,071 WARN [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ServerService Thread Pool -- 53) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: Could not create connection
at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:356)
at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:304)
at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.createConnectionEventListener(SemaphoreArrayListManagedConnectionPool.java:834)
at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreArrayListManagedConnectionPool.getConnection(SemaphoreArrayListManagedConnectionPool.java:379)
at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:453)
at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:425)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:354)
at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:368)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:510)
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:143)
at org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider.getConnection(InjectedDataSourceConnectionProvider.java:70) [hibernate-entitymanager-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcServicesImpl.java:242) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:117) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:85) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:184) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:156) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1827) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1785) [hibernate-core-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:96) [hibernate-entitymanager-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:915) [hibernate-entitymanager-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:900) [hibernate-entitymanager-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76) [hibernate-entitymanager-4.2.18.Final-redhat-2.jar:4.2.18.Final-redhat-2]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:200) [jboss-as-jpa-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$600(PersistenceUnitServiceImpl.java:57) [jboss-as-jpa-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:99) [jboss-as-jpa-7.5.0.Final-redhat-21.jar:7.5.0.Final-redhat-21]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_91]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: org.postgresql.util.PSQLException: The connection attempt failed.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:150)
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)
at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:123)
at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:28)
at org.postgresql.jdbc3g.AbstractJdbc3gConnection.<init>(AbstractJdbc3gConnection.java:20)
at org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:30)
at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:22)
at org.postgresql.Driver.makeConnection(Driver.java:391)
at org.postgresql.Driver.connect(Driver.java:265)
at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:328)
... 28 more
Caused by: java.net.UnknownHostException: NAME_TWO
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) [rt.jar:1.8.0_91]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) [rt.jar:1.8.0_91]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) [rt.jar:1.8.0_91]
at java.net.Socket.connect(Socket.java:589) [rt.jar:1.8.0_91]
at java.net.Socket.connect(Socket.java:538) [rt.jar:1.8.0_91]
at java.net.Socket.<init>(Socket.java:434) [rt.jar:1.8.0_91]
at java.net.Socket.<init>(Socket.java:211) [rt.jar:1.8.0_91]
at org.postgresql.core.PGStream.<init>(PGStream.java:60)
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:74)
... 37 more
In a desperate attempt I tried to add both names to the hosts file but that did not work. If it helps in any way: the server does say that the PostgreSQL driver has been deployed successfully on it in its management console.

Apparently the database I was trying to connect to did not exist. I received the database and then used pgAdmin to restore it. I then changed the location to my localhost:port and it was able to connect to the database.