Hi Tom, the things that I can think of to look at are the following.
1. What's the IP address and hostname of the machine? Does /etc/hosts provide
conflicting information regarding what hostname is what address, compared to
what you expect?
2. How many ip interfaces are actually active. Is there just one? Do you have
configuration in place to select the appropriate interface if there are multiple
active and you expect them to be active?
3. Where is stdout and stderr directed? Are there VM level
NoClassDefFoundError or other Throwables happening which you can no see and that
could keep all logging from happening because the code never gets there?
4. Run the JVM with -verbose to see what classloading activity is occuring, and
that the appropriate sources of classes are being used (you are overriding the
ext dir, does that remove something that you need for example).
5. What does 'netstat -an | grep LISTEN' show you? Are there appropriate
sockets listening on the appropriate ports?
Gregg Wonderly
Tom hobbs wrote:
Hi all,
Okay, let's just assume that I'm already highly embarrassed about asking
this question, but there's only so much banging my head against a wall
that I can do. (And I've so far had, on and off, months of this
particular wall!)
I'm currently suffering from a problem not disimilar to this one;
http://www.nabble.com/Strange-behavior-of-remote-Linux-Registrar-td13244997.html
With the exception that I have only one machine, an Arch Linux laptop,
and I can't even grab a ServiceRegistrar.
Here's the detail;
The problem first came up a few months ago when I was writing a tutorial
for Jeremy. I can start a reggie which looks like it has come up
properly. But then looking up that reggie fails.
When using my own script I get "reggie.jar requested from
localhost:50504" and similar lines in the HTTPD log. When using the
river httpd.sh script, I don't get that kind of output.
I've tried explicitly starting rmid (and also leaving it alone) all to
no avail.
Here's the simple lookup code I'm using;
LookupLocator lookupLoactor = new LookupLocator("jini://localhost");
ServiceRegistrar serviceRegistrar = lookupLoactor.getRegistrar();
but the call to getRegistrar() never returns. Even when I supply a
timeout to the overloaded method, it never returns. I don't get any
kind of error message/stack trace out of the above code.
Here's the output from running reggie script;
$ ./scripts/jrmp-reggie.sh
+ java -Djava.security.policy=config/policy.all
-Djava.ext.dirs=../../lib-ext/ -jar ../../lib/start.jar
config/start-reggie.config
05-Oct-2009 14:34:34 com.sun.jini.reggie.RegistrarImpl init
INFO: started Reggie: 2b673dfb-726b-4bcb-b9b1-aaeb174d7477,
[nonsecure.hello.example.jini.sun.com], jini://localhost/
Here's the HTTPD output;
$ ./scripts/httpd.sh
+ java -jar ../../lib/classserver.jar -port 8080 -dir lib:../../lib-dl
05-Oct-2009 14:33:08 com.sun.jini.tool.ClassServer run
INFO: ClassServer started [[lib/, ../../lib-dl/], port 8080]
The irony of needing some (hopefully, painfully simple) help in order to
write a tutorial is not lost on me.
Does anyone have any forehead-slapping, "Of course"-exclaiming advice
for me?
Thanks,
Tom
