hdfs datanode can not register to namenode due to L2TP with NAT( not sure )











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Hi everyone i v come up with a problem which involves lots of techs and i m not sure i can describe it properly..



first my network topology:



lab 1 (datanode1~5)
< client - L2TP vpn ( with NAT on ) - server >
lab 2 (datanode 6~8 and namenode 1~2)



lab 1 datanode IP 192.169.88.x
lab 2 datanode IP 192.168.77.x



L2TP : lab 1 77.77.77.254 -> 77.77.77.1 lab 2




when i start a datanode in lab1 , in lab 2's namenode, i can see register request came up , but with wrong IP address ( 77.77.77.254 which is VPN client, or NAT IP ) not then exact datanode IP.



in my knowledge tunnel tranportation should not be awared by applications , but why hdfs get this IP address . ?




BTW , in the same topo, YARN cluster works just fine with all the node active.
( yarn resorcemanager is located in lab2, and nodemanager located in lab1)




it confused me for a bit long time, so very appreciate any help , thanks !






hdfs l2tp







share|improve this question


























    up vote
    0
    down vote

    favorite












    Hi everyone i v come up with a problem which involves lots of techs and i m not sure i can describe it properly..



    first my network topology:



    lab 1 (datanode1~5)
    < client - L2TP vpn ( with NAT on ) - server >
    lab 2 (datanode 6~8 and namenode 1~2)



    lab 1 datanode IP 192.169.88.x
    lab 2 datanode IP 192.168.77.x



    L2TP : lab 1 77.77.77.254 -> 77.77.77.1 lab 2




    when i start a datanode in lab1 , in lab 2's namenode, i can see register request came up , but with wrong IP address ( 77.77.77.254 which is VPN client, or NAT IP ) not then exact datanode IP.



    in my knowledge tunnel tranportation should not be awared by applications , but why hdfs get this IP address . ?




    BTW , in the same topo, YARN cluster works just fine with all the node active.
    ( yarn resorcemanager is located in lab2, and nodemanager located in lab1)




    it confused me for a bit long time, so very appreciate any help , thanks !






    hdfs l2tp







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Hi everyone i v come up with a problem which involves lots of techs and i m not sure i can describe it properly..



      first my network topology:



      lab 1 (datanode1~5)
      < client - L2TP vpn ( with NAT on ) - server >
      lab 2 (datanode 6~8 and namenode 1~2)



      lab 1 datanode IP 192.169.88.x
      lab 2 datanode IP 192.168.77.x



      L2TP : lab 1 77.77.77.254 -> 77.77.77.1 lab 2




      when i start a datanode in lab1 , in lab 2's namenode, i can see register request came up , but with wrong IP address ( 77.77.77.254 which is VPN client, or NAT IP ) not then exact datanode IP.



      in my knowledge tunnel tranportation should not be awared by applications , but why hdfs get this IP address . ?




      BTW , in the same topo, YARN cluster works just fine with all the node active.
      ( yarn resorcemanager is located in lab2, and nodemanager located in lab1)




      it confused me for a bit long time, so very appreciate any help , thanks !






      hdfs l2tp







      share|improve this question













      Hi everyone i v come up with a problem which involves lots of techs and i m not sure i can describe it properly..



      first my network topology:



      lab 1 (datanode1~5)
      < client - L2TP vpn ( with NAT on ) - server >
      lab 2 (datanode 6~8 and namenode 1~2)



      lab 1 datanode IP 192.169.88.x
      lab 2 datanode IP 192.168.77.x



      L2TP : lab 1 77.77.77.254 -> 77.77.77.1 lab 2




      when i start a datanode in lab1 , in lab 2's namenode, i can see register request came up , but with wrong IP address ( 77.77.77.254 which is VPN client, or NAT IP ) not then exact datanode IP.



      in my knowledge tunnel tranportation should not be awared by applications , but why hdfs get this IP address . ?




      BTW , in the same topo, YARN cluster works just fine with all the node active.
      ( yarn resorcemanager is located in lab2, and nodemanager located in lab1)




      it confused me for a bit long time, so very appreciate any help , thanks !






      hdfs l2tp




      hdfs l2tp






      share|improve this question













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      asked Nov 20 at 7:26









      knight.tong

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