[jboss-user] [Clustering/JBoss] - HA-JNDI server side problem
Hi all, first at all i am running JBoss 4.2.2 GA.
I develop a few methods to obtain the master node for a cluster easily given at least a
node and all works great outside the server (the reason i need the master node is to
create and delete JMS queues).
In my test enviroment i have a cluster with 2 nodes, A and B, and i have a web application
deployed on both nodes who has the fancy buttons to see, create and remove my queues...
so, i ported my tests code into the web component and fails obtaining the master node, i
already read the documentation and i am doing exactly what they say without a positive
result, my InitialContext always return the local instance for the node who runs the web
component, so, if i start the web page in the master node all runs ok, by the other hand
if i use the web pages in the Non Master node it will fail.
My Nodes are:
A = 192.168.5.63 (MASTER)
B = 192.168.5.52 (Non Master)
The magic button who try to obtain the correct Master Node has the following code (just as
the documentation says):
anonymous wrote :
|
| public static MBeanServerConnection getMasterNodeFromCluster(int tries, String node)
{
|
| try {
|
| for (int i = 0; i < tries; i++) {
|
| Properties env = new Properties();
| env.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
| env.put(Context.URL_PKG_PREFIXES, "jboss.naming:org.jnp.interfaces");
| env.put(Context.PROVIDER_URL, node);
| System.out.print("trying with " + node);
|
| Context ctx = new InitialContext(env);
| MBeanServerConnection mbs = (MBeanServerConnection)
ctx.lookup("jmx/invoker/RMIAdaptor");
|
| System.out.print(" obtained "
| + mbs.getAttribute(new ObjectName("jboss:service=HAJNDI"),
"BindAddress").toString());
|
| if (mbs.getAttribute(new
ObjectName("jboss.ha:service=HASingletonDeployer"),
"MasterNode").toString()
| .equalsIgnoreCase("true")) {
| System.out.println();
| return mbs;
| }
| }
|
| } catch (Exception e) {
| e.printStackTrace();
| }
|
| System.out.println("not found");
|
| return null;
|
| }
|
|
|
and i am calling this method from the action of the button this way:
anonymous wrote :
|
| JMQueuesUtils.getMasterNodeFromCluster(10, "192.168.5.63:1100");
|
|
Don't pay any attention to the 'tries' variable, that was just a test...
The Cluster Guide for JBoss 4.2 says literally this:
anonymous wrote :
| So, an EJB home lookup through HA-JNDI, will always be delegated to the local
| JNDI instance. If different beans (even of the same type, but participating in
different
| clusters) use the same JNDI name, it means that each JNDI server will have a
| different "target" bound (JNDI on node 1 will have a binding for bean A and
JNDI
| on node 2 will have a binding, under the same name, for bean B). Consequently, if
| a client performs a HA-JNDI query for this name, the query will be invoked on any
| JNDI server of the cluster and will return the locally bound stub. Nevertheless, it
may
| not be the correct stub that the client is expecting to receive!
|
|
| and ....
|
| If you want to access HA-JNDI from inside the application server, you must
explicitly
| get an InitialContext by passing in JNDI properties. The following code shows how
to
| create a naming Context bound to HA-JNDI:
| Properties p = new Properties();
| p.put(Context.INITIAL_CONTEXT_FACTORY,
| "org.jnp.interfaces.NamingContextFactory");
| p.put(Context.URL_PKG_PREFIXES,
| "jboss.naming:org.jnp.interfaces");
| p.put(Context.PROVIDER_URL, "localhost:1100"); // HA-JNDI port.
| return new InitialContext(p);
|
im doing exactly this but simply does not work... :(
Thanks in advance! and forgive my english.
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