On Sunday 10 August 2008 08:02:52 Dhruba Borthakur wrote: > In almost all hadoop configurations, all host names can be specified > as IP address. So, in your hadoop-site.xml, please specify the IP > address of the namenode (instead of its hostname).
Which is not necessary a solution for complicated situations => e.g. where a port is bound to a different IP address that is used to access it. Basically NAT ;) I mention this, because one common environment for Hadoop, EC2 does exactly that ;) Andreas > > -dhruba > > 2008/8/8 Lucas Nazário dos Santos <[EMAIL PROTECTED]>: > > Thanks Andreas. I'll try it. > > > > On Fri, Aug 8, 2008 at 5:47 PM, Andreas Kostyrka <[EMAIL PROTECTED]>wrote: > >> On Friday 08 August 2008 15:43:46 Lucas Nazário dos Santos wrote: > >> > You are completely right. It's not safe at all. But this is what I > >> > have > >> > >> for > >> > >> > now: > >> > two computers distributed across the Internet. I would really > >> > appreciate > >> > >> if > >> > >> > anyone could give me spark on how to configure the namenode's IP in a > >> > datanode. As I could identify in log files, the datanode keeps trying > >> > to connect > >> > to the IP 10.1.1.5, which is the internal IP of the namenode. I just > >> > >> need a > >> > >> > way > >> > to say to the datanode "Hey, could you instead connect to the IP > >> > >> 172.1.23.2 > >> > >> > "? > >> > >> Your only bet is to set it up in a VPNed environment. That would make it > >> securitywise okay too. > >> > >> Andreas > >> > >> > Lucas > >> > > >> > On Fri, Aug 8, 2008 at 10:25 AM, Lukáš Vlček <[EMAIL PROTECTED]> > >> > >> wrote: > >> > > HI, > >> > > > >> > > I am not an expert on Hadoop configuration but is this safe? As far > >> > > as > >> > >> I > >> > >> > > understand the IP address is public and connection to the datanode > >> > > port is not secured. Am I correct? > >> > > > >> > > Lukas > >> > > > >> > > On Fri, Aug 8, 2008 at 8:35 AM, Lucas Nazário dos Santos < > >> > > > >> > > [EMAIL PROTECTED]> wrote: > >> > > > Hello again, > >> > > > > >> > > > In fact I can get the cluster up and running with two nodes in > >> > > > different LANs. The problem appears when executing a job. > >> > > > > >> > > > As you can see in the piece of log bellow, the datanode tries to > >> > > > >> > > comunicate > >> > > > >> > > > with the namenode using the IP 10.1.1.5. The issue is that the > >> > >> datanode > >> > >> > > > should be using a valid IP, and not 10.1.1.5. > >> > > > > >> > > > Is there a way of manually configuring the datanode with the > >> > >> namenode's > >> > >> > > IP, > >> > > > >> > > > so I can change from 10.1.1.5 to, say 189.11.131.172? > >> > > > > >> > > > Thanks, > >> > > > Lucas > >> > > > > >> > > > > >> > > > 2008-08-08 02:34:23,335 INFO org.apache.hadoop.mapred.TaskTracker: > >> > > > TaskTracker up at: localhost/127.0.0.1:60394 > >> > > > 2008-08-08 02:34:23,335 INFO org.apache.hadoop.mapred.TaskTracker: > >> > > > >> > > Starting > >> > > > >> > > > tracker tracker_localhost:localhost/127.0.0.1:60394 > >> > > > 2008-08-08 02:34:23,589 INFO org.apache.hadoop.mapred.TaskTracker: > >> > > > >> > > Starting > >> > > > >> > > > thread: Map-events fetcher for all reduce tasks on > >> > > > tracker_localhost:localhost/127.0.0.1:60394 > >> > > > 2008-08-08 03:06:43,239 INFO org.apache.hadoop.mapred.TaskTracker: > >> > > > LaunchTaskAction: task_200808080234_0001_m_000000_0 > >> > > > 2008-08-08 03:07:43,989 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 1 time(s). > >> > > > 2008-08-08 03:08:44,999 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 2 time(s). > >> > > > 2008-08-08 03:09:45,999 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 3 time(s). > >> > > > 2008-08-08 03:10:47,009 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 4 time(s). > >> > > > 2008-08-08 03:11:48,009 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 5 time(s). > >> > > > 2008-08-08 03:12:49,026 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 6 time(s). > >> > > > 2008-08-08 03:13:50,036 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 7 time(s). > >> > > > 2008-08-08 03:14:51,046 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 8 time(s). > >> > > > 2008-08-08 03:15:52,056 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 9 time(s). > >> > > > 2008-08-08 03:16:53,066 INFO org.apache.hadoop.ipc.Client: > >> > > > Retrying > >> > > > >> > > connect > >> > > > >> > > > to server: /10.1.1.5:9000. Already tried 10 time(s). > >> > > > 2008-08-08 03:17:54,077 WARN org.apache.hadoop.mapred.TaskTracker: > >> > > > Error initializing task_200808080234_0001_m_000000_0: > >> > > > java.net.SocketTimeoutException > >> > > > at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:109) > >> > > > at > >> > >> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:174) > >> > >> > > > at org.apache.hadoop.ipc.Client.getConnection(Client.java:623) > >> > > > at org.apache.hadoop.ipc.Client.call(Client.java:546) > >> > > > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:212) > >> > > > at org.apache.hadoop.dfs.$Proxy5.getProtocolVersion(Unknown > >> > >> Source) > >> > >> > > > at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:313) > >> > > > at > >> > > > >> > > org.apache.hadoop.dfs.DFSClient.createRPCNamenode(DFSClient.java:102 > >> > >) > >> > > > >> > > > at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:178) > >> > > > at > >> > >> org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSy > >>s > >> > >> > >tem.java:68) > >> > > > >> > > > at > >> > >> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1280) > >> > >> > > > at > >> > > > org.apache.hadoop.fs.FileSystem.access$300(FileSystem.java:56) at > >> > > > org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1291) at > >> > > > org.apache.hadoop.fs.FileSystem.get(FileSystem.java:203) at > >> > > > org.apache.hadoop.fs.FileSystem.getNamed(FileSystem.java:152) at > >> > >> org.apache.hadoop.mapred.TaskTracker.localizeJob(TaskTracker.java:670) > >> > >> > > > at > >> > >> org.apache.hadoop.mapred.TaskTracker.startNewTask(TaskTracker.java:1274 > >> > >> > > >) at > >> > >> org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:915) > >> > >> > > > at > >> > > > org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:1310) at > >> > >> org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:2251) > >> > >> > > > On Fri, Aug 8, 2008 at 12:16 AM, Lucas Nazário dos Santos < > >> > > > > >> > > > [EMAIL PROTECTED]> wrote: > >> > > > > Hello, > >> > > > > > >> > > > > Can someone point me out what are the extra tasks that need to > >> > > > > be > >> > > > > >> > > > performed > >> > > > > >> > > > > in order to set up a cluster where nodes are spread over the > >> > > > > Internet, > >> > > > >> > > in > >> > > > >> > > > > different LANs? > >> > > > > > >> > > > > Do I need to free any datanode/namenode ports? How do I get the > >> > > > >> > > datanodes > >> > > > >> > > > > to know the valid namenode IP, and not something like 10.1.1.1? > >> > > > > > >> > > > > Any help is appreciate. > >> > > > > > >> > > > > Lucas > >> > > > >> > > -- > >> > > http://blog.lukas-vlcek.com/
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