OSB SFTP transport not finding key for hostname, IP

Question

Hello everyone,
I'm trying to set a proxy service in OSB that connects to a SFTP server to retrieve files.
I am on a single server environment.
WLS version is 10.3.6
SOA Suite/OSB version is 11.1.1.6
I've setup the directory for the known_hosts file which contains the public key to access my SFTP :
$DOMAIN_HOME/config/osb/transports/sftp
I've tried reaching the SFTP server from my server and it works fine :
sftp -v -oIdentityFile=myKey user@my-sftp-hostname
But when I try this with my proxy service, I get the following error :
<6 janv. 2014 11 h 49 CET> <Error> <SFTPTransport> <BEA-381826> <Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>>
[ERROR] TransportProtocolCommon - The Transport Protocol thread failed <com.sshtools.j2ssh.transport.TransportProtocolException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>>com.sshtools.j2ssh.transport.TransportProtocolException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>
        at com.bea.wli.sb.transports.sftp.client.KnownHostVerifier.onUnknownHost(KnownHostVerifier.java:40)
        at com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification.verifyHost(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolClient.verifyHostKey(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolClient.performKeyExchange(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.beginKeyExchange(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.onMsgKexInit(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.startBinaryPacketProtocol(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.run(Unknown Source)
        at java.lang.Thread.run(Thread.java:722)
<6 janv. 2014 11 h 49 CET> <Error> <SFTPTransport> <BEA-381828> <Exception SFTPClientException, message : Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>>
<6 janv. 2014 11 h 49 CET> <Error> <WliSbTransports> <BEA-381602> <Une erreur est survenue lors de l'interrogation de la ressource pour l'adresse de service ProxyService$DHARMA_ECOMMERCE_OSB$OUT$Commande$V4$ProxyServices$ADC$SFTP_Test : com.bea.wli.sb.transports.TransportException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>
com.bea.wli.sb.transports.TransportException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>
        at com.bea.wli.sb.transports.sftp.connector.SFTPWorkPartitioningAgent.execute(SFTPWorkPartitioningAgent.java:125)
        at com.bea.wli.sb.transports.poller.TransportTimerListener.run(TransportTimerListener.java:74)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        Truncated. see log file for complete stacktrace
Caused By: com.bea.wli.sb.transports.TransportException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>
        at com.bea.wli.sb.transports.sftp.connector.SFTPWorkPartitioningAgent.getSftpResource(SFTPWorkPartitioningAgent.java:165)
        at com.bea.wli.sb.transports.sftp.connector.SFTPWorkPartitioningAgent.execute(SFTPWorkPartitioningAgent.java:58)
        at com.bea.wli.sb.transports.poller.TransportTimerListener.run(TransportTimerListener.java:74)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        Truncated. see log file for complete stacktrace
Caused By: com.sshtools.j2ssh.transport.TransportProtocolException: Clé introuvable pour l'hôte <my-sftp-hostname>,<ip>
        at com.bea.wli.sb.transports.sftp.client.KnownHostVerifier.onUnknownHost(KnownHostVerifier.java:40)
        at com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification.verifyHost(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolClient.verifyHostKey(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolClient.performKeyExchange(Unknown Source)
        at com.sshtools.j2ssh.transport.TransportProtocolCommon.beginKeyExchange(Unknown Source)
        Truncated. see log file for complete stacktrace
>
What  am I missing here ?
Thank you very much for your help.
Chris

Answer 1

Hi,
It's not finding the key... That may be because:
1. It's not finding the known_hosts file
2. The hostname/ip don't match in the file
3. The public key is not in the Open SSH public key format
Have you had a look at this?
http://docs.oracle.com/cd/E28280_01/dev.1111/e15866/http_poller.htm#i1085323
Cheers,
Vlad