Hello all,
I am working to setup a small cloud of 8 nodes.  All slave nodes are attached to a standalone switch.  The master node, which has zookeeper, namenode and jobtracker has two nics: one on the standalone switch and one to the main network.  
I was hoping that I could run java code to query the cloud through the master from any system on the main network.  Is this possible or will I have to run the code on the master node with this setup?  Currently I am getting this error:

-Test Java
ZooKeeperInstance zki = new ZooKeeperInstance("cloud", "master-server");
System.err.println("Got zookeeper instance!");
Connector conn = zki.getConnector("root", "somepassword");
System.err.println("never get here.");

-Output
12/03/26 23:24:03 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=master-server sessionTimeout=30000 watcher=org.apache.accumulo.core.zookeeper.ZooSession$AccumuloWatcher@85af80
12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Opening socket connection to server /200.209.130.130:2181  (fake IP)
12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Socket connection established to master-server/200.209.130.130:2181, initiating session
12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Session establishment complete on server master-server/200.209.130.130:2181, sessionid = 0x1365226ee5d0039, negotiated timeout = 30000
Got zookeeper instance!
12/03/26 23:24:25 WARN impl.ServerClient: Failed to find an available server in the list of servers: [10.10.10.101:9997:9997 (120000), 10.10.10.102:9997:9997 (120000)]

Thanks in advance,
Sandy

This setup is not recommended as it will put a lot of strain on your master
machine since all connections will be routed through it.  It also creates a
bottleneck and single point of failure.

If you wanted to get it working for testing you will need to setup your
master machine as a router (and possibly PNAT depending on your network).
 I believe the details of setting this up are beyond the scope of this
list.  Here is a howto if you want to pursue this:
http://www.stanford.edu/~fenn/linux/

--Jason

On Mon, Mar 26, 2012 at 11:44 PM, Hider, Sandy <[EMAIL PROTECTED]>wrote:

> Hello all,
> I am working to setup a small cloud of 8 nodes.  All slave nodes are
> attached to a standalone switch.  The master node, which has zookeeper,
> namenode and jobtracker has two nics: one on the standalone switch and one
> to the main network.
>
>
> I was hoping that I could run java code to query the cloud through the
> master from any system on the main network.  Is this possible or will I
> have to run the code on the master node with this setup?  Currently I am
> getting this error:
>
> -Test Java
> ZooKeeperInstance zki = new ZooKeeperInstance("cloud", "master-server");
> System.err.println("Got zookeeper instance!");
> Connector conn = zki.getConnector("root", "somepassword");
> System.err.println("never get here.");
>
> -Output
> 12/03/26 23:24:03 INFO zookeeper.ZooKeeper: Initiating client connection,
> connectString=master-server sessionTimeout=30000
> watcher=org.apache.accumulo.core.zookeeper.ZooSession$AccumuloWatcher@85af80
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Opening socket connection to
> server /200.209.130.130:2181  (fake IP)
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Socket connection established
> to master-server/200.209.130.130:2181, initiating session
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Session establishment
> complete on server master-server/200.209.130.130:2181, sessionid > 0x1365226ee5d0039, negotiated timeout = 30000
> Got zookeeper instance!
> 12/03/26 23:24:25 WARN impl.ServerClient: Failed to find an available
> server in the list of servers: [10.10.10.101:9997:9997 (120000),
> 10.10.10.102:9997:9997 (120000)]
>
> Thanks in advance,
> Sandy
>
>

Clients of accumulo need to be able to talk to zookeeper and all tablet
servers.

People often create a boundary service to provide access, but this is not
part of accumulo.

There's a couple of tickets for creating such services: ACCUMULO-482
ACCUMULO-490

-Eric

On Mon, Mar 26, 2012 at 11:44 PM, Hider, Sandy <[EMAIL PROTECTED]>wrote:

> Hello all,
> I am working to setup a small cloud of 8 nodes.  All slave nodes are
> attached to a standalone switch.  The master node, which has zookeeper,
> namenode and jobtracker has two nics: one on the standalone switch and one
> to the main network.
>
>
> I was hoping that I could run java code to query the cloud through the
> master from any system on the main network.  Is this possible or will I
> have to run the code on the master node with this setup?  Currently I am
> getting this error:
>
> -Test Java
> ZooKeeperInstance zki = new ZooKeeperInstance("cloud", "master-server");
> System.err.println("Got zookeeper instance!");
> Connector conn = zki.getConnector("root", "somepassword");
> System.err.println("never get here.");
>
> -Output
> 12/03/26 23:24:03 INFO zookeeper.ZooKeeper: Initiating client connection,
> connectString=master-server sessionTimeout=30000
> watcher=org.apache.accumulo.core.zookeeper.ZooSession$AccumuloWatcher@85af80
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Opening socket connection to
> server /200.209.130.130:2181  (fake IP)
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Socket connection established
> to master-server/200.209.130.130:2181, initiating session
> 12/03/26 23:24:03 INFO zookeeper.ClientCnxn: Session establishment
> complete on server master-server/200.209.130.130:2181, sessionid > 0x1365226ee5d0039, negotiated timeout = 30000
> Got zookeeper instance!
> 12/03/26 23:24:25 WARN impl.ServerClient: Failed to find an available
> server in the list of servers: [10.10.10.101:9997:9997 (120000),
> 10.10.10.102:9997:9997 (120000)]
>
> Thanks in advance,
> Sandy
>
>