ECS: Configuración de Hadoop en ECS con separación de red

Summary: Configuración de Hadoop en ECS con separación de red.

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Instructions

Resumen:     
Cuando un clúster de ECS está configurado para la separación de la red a fin de dividir la administración y el tráfico de datos, es probable que los nodos de Hadoop envíen tráfico a las direcciones

IP de "datos".Al configurar la autenticación Kerberos para Hadoop, los usuarios pueden configurar keytab principal para el nombre de host "mgmt".

Cuando Active Directory (o LDAP) intenta autenticar la solicitud, realiza una búsqueda inversa de la dirección IP del nodo de ECS para confirmar el nombre de host. Esto pasa la IP de "datos" y no se puede autenticar mediante el keytab deseado, ya que está configurado para el nombre de host "mgmt".

Instrucciones:    
Para determinar si este problema está presente, revise el error del cliente de Hadoop y el dataheadsvc de ECS:   

Ejemplo de error de cliente Hadoop:      
20/10/12 15:57:27 DEBUG vipr.ClientConnection: Read StatRequestMessage[kind=STAT_REQUEST,namespace=ns-datalake,bucket=ns-datalake-s3-bucket-ifrs17,path=/,hdfsTrustedStatus=HDFS_USER_TRUSTED] from '10.20.46.71'
20/10/12 15:57:27 DEBUG vipr.ClientConnection: The Message request kind from the client is RESPONSE The registered Socket Address is: /10.20.46.71 and port is 9040
20/10/12 15:57:27 DEBUG vipr.ViPRFileSystemClientBase: Generic failure for request: User: hdfs@HDFS.COM (auth:KERBEROS), host: ns-datalake-s3-bucket-ifrs17.ns-datalake.federation1, namespace: ns-datalake, bucket: ns-datalake-s3-bucket-ifrs17
20/10/12 15:57:27 DEBUG vipr.ViPRFileSystemClientBase: Request message sent: StatRequestMessage[kind=STAT_REQUEST,namespace=ns-datalake,bucket=ns-datalake-s3-bucket-ifrs17,path=/,hdfsTrustedStatus=HDFS_USER_TRUSTED]
20/10/12 15:57:27 DEBUG vipr.ViPRFileSystemClientBase: Reply message received: ResponseMessage[kind=RESPONSE,status=ERROR(100)]
20/10/12 15:57:27 DEBUG util.ExceptionHelper: ExceptionHelper l_method checkResponse, l_errstr ERROR_INSUFFICIENT_PERMISSIONS
java.lang.Exception: Stack Trace
        at com.emc.hadoop.fs.vipr.util.ExceptionHelper.throwException(ExceptionHelper.java:110)
        at com.emc.hadoop.fs.vipr.ViPRFileSystemClientBase.checkResponse(ViPRFileSystemClientBase.java:988)
        at com.emc.hadoop.fs.vipr.ViPRFileSystemClientBase.sendFileStatusRequest(ViPRFileSystemClientBase.java:1008)
        at com.emc.hadoop.fs.vipr.ViPRFileSystemClientBase.stat(ViPRFileSystemClientBase.java:654)
        at com.emc.hadoop.fs.vipr.ViPRFileSystemBase.getFileStatus(ViPRFileSystemBase.java:313)
        at org.apache.hadoop.fs.Globber.getFileStatus(Globber.java:65)
        at org.apache.hadoop.fs.Globber.doGlob(Globber.java:294)
        at org.apache.hadoop.fs.Globber.glob(Globber.java:149)
        at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:2016)
        at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:353)
        at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:250)
        at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:233)
        at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:104)
        at org.apache.hadoop.fs.shell.Command.run(Command.java:177)
        at org.apache.hadoop.fs.FsShell.run(FsShell.java:328)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.hadoop.fs.FsShell.main(FsShell.java:391)
ls: ViPRFS internal error (ERROR).
20/10/12 15:57:27 DEBUG util.ShutdownHookManager: Completed shutdown in 0.003 seconds; Timeouts: 0
20/10/12 15:57:27 DEBUG util.ShutdownHookManager: ShutdownHookManger completed shutdown.

 

Servicio de cabeza de datos de ECS:      
2020-10-12T08:51:17,178 [pool-103-thread-1] ERROR  TokenAuthenticator.java (line 100) Exception in authenticating user
javax.security.auth.login.LoginException: Client not found in Kerberos database (6)
        at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:804)
        at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617)
        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 javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
        at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
        at com.emc.vipr.hdfs.auth.TokenAuthenticator.authenticateClientPrincipal(TokenAuthenticator.java:81)
        at com.emc.vipr.hdfs.fs.RequestProcessor.getPrincipal(RequestProcessor.java:2200)
        at com.emc.vipr.hdfs.fs.RequestProcessor.accept(RequestProcessor.java:195)
        at com.emc.vipr.hdfs.net.ConnectionManager$RequestThread.run(ConnectionManager.java:141)
        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: KrbException: Client not found in Kerberos database (6)
        at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:76)
        at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:316)
        at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
        at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:776)
        ... 19 more
Caused by: KrbException: Identifier doesn't match expected value (906)
        at sun.security.krb5.internal.KDCRep.init(KDCRep.java:140)
        at sun.security.krb5.internal.ASRep.init(ASRep.java:64)
        at sun.security.krb5.internal.ASRep.<init>(ASRep.java:59)
        at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:60)
        ... 22 more
2020-10-12T08:51:17,217 [pool-103-thread-1] ERROR  RequestProcessor.java (line 2110) Request from 10.20.136.117 : ERROR : StatRequestMessage[kind=STAT_REQUEST,namespace=ns-datalake,bucket=ns-datalake-s3-bucket-ifrs17,path=/,hdfsTrustedStatus=HDFS_USER_TRUSTED]

 

Solución:     
La solución es usar setspn en el host de Active Directory a fin de crear un alias para la entidad de seguridad basada en "mgmt" a fin de incluir al usuario basado en "datos".

Ejemplo: ECS tiene dos direcciones IP:
10.10.10.1 para datos y 10.10.10.2 para administración
La búsqueda de DNS para IP de datos es ecsdata1.corp.com y la búsqueda de DNS para IP de administración es ecsmgmt1.corp.com. 
El nombre de host en el nodo es "ecsmgmt1.corp.com"
  
setspn -U -S vipr/ecsmgmt1.corp.com ecsdata1.corp.com
setspn -U -S vipr/ecsmgmt2.corp.com ecsdata2.corp.com
setspn -U -S vipr/ecsmgmt3.corp.com ecsdata3.corp.com
setspn -U -S vipr/ecsmgmt4.corp.com ecsdata4.corp.com
setspn -U -S vipr/ecsmgmt5.corp.com ecsdata5.corp.com
setspn -U -S vipr/ecsmgmt6.corp.com ecsdata6.corp.com

 

Verifique que sea correcto con setspn -Q:      
setspn -Q vipr/ecsmgmt1.corp.com

Checking domain DC=atradiusnet,DC=com
CN=vipr/gbcdfecsdata1.atradiusnet.com,OU=HDP_DEV,OU=Dedicated,OU=GroupWide,DC=atradiusnet,DC=com
        vipr/ecsmgmt1.corp.com
        vipr/ecsdata1.corp.com


Active Directory autentica la entidad de seguridad "vipr/ecsmgmt1.corp.com@CORP.COM, a pesar de que la solicitud originada por el nodo de Hadoop usaba la dirección IP "ecsdata1.corp.com". 

Affected Products

ECS Appliance

Products

ECS Appliance, ECS Appliance Hardware Series
Article Properties
Article Number: 000180919
Article Type: How To
Last Modified: 02 Jul 2025
Version:  5
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