The port you're looking for is typically 8080, but if you only specify the host and not the port it shoudl work just fine.
bin/nodeprobe -host localhost Michael On Wed, Jul 15, 2009 at 6:18 PM, <[email protected]> wrote: > bin]$ ./nodeprobe -host localhost -port 8888 > Error connecting to remote JMX agent! > java.io.IOException: Failed to retrieve RMIServer stub: > javax.naming.CommunicationException [Root exception is > java.rmi.ConnectIOException: error during JRMP connection establishment; > nested exception is: > java.io.EOFException] > at > javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:342) > at > javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267) > at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:149) > at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:111) > at org.apache.cassandra.tools.NodeProbe.main(NodeProbe.java:470) > Caused by: javax.naming.CommunicationException [Root exception is > java.rmi.ConnectIOException: error during JRMP connection establishment; > nested exception is: > java.io.EOFException] > at > com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:118) > at > com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:203) > at javax.naming.InitialContext.lookup(InitialContext.java:409) > at > javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1902) > at > javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1871) > at > javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:276) > ... 4 more > Caused by: java.rmi.ConnectIOException: error during JRMP connection > establishment; nested exception is: > java.io.EOFException > at > sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:304) > at > sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) > at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:340) > at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) > at > com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:114) > ... 9 more > Caused by: java.io.EOFException > at java.io.DataInputStream.readByte(DataInputStream.java:267) > at > sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:246) > ... 13 more > > On Wed, Jul 15, 2009 at 4:17 PM, <[email protected]> wrote: >> >> port 7002 doesnt trying nodeprobe >> >> On Wed, Jul 15, 2009 at 4:03 PM, Anthony Molinaro >> <[email protected]> wrote: >>> >>> Alternatively if you are using the 0.3 release you can point a browser >>> at port 7002 of one of the boxes and should see all the nodes in the >>> list. >>> >>> -Anthony >>> >>> On Wed, Jul 15, 2009 at 05:40:27PM -0500, Michael Greene wrote: >>> > You can use the nodeprobe utility in bin/ to contact each node and >>> > make sure they see the same information. Run it with no arguments to >>> > see the commands you can pass it. >>> > >>> > There is also an open issue at >>> > https://issues.apache.org/jira/browse/CASSANDRA-252 for making this a >>> > little more automatic (instead of having to run nodeprobe on each node >>> > and check the results by hand, you can just pass in all the servers >>> > that you think should be able to see each other) but there's no code >>> > for this yet. >>> > >>> > Michael >>> > >>> > On Wed, Jul 15, 2009 at 5:33 PM, <[email protected]> wrote: >>> > > Mark and Jonathan >>> > > I have started cassandra on 4 servers with all 4 of them as seeds >>> > > how do i know all 4 are now part of the datastore >>> > > are there ways to test this >>> > > thanks a lot >>> > > >>> > > On Tue, Jul 14, 2009 at 8:30 AM, Mark Robson <[email protected]> >>> > > wrote: >>> > >> >>> > >> 2009/7/14 <[email protected]> >>> > >>> >>> > >>> 1. If you only have 3 production servers, Cassandra may not do much >>> > >>> for >>> > >>> you. You will probably only care if you have lots more servers. 3 >>> > >>> servers is >>> > >>> a reasonable minimum for a test / dev environment >>> > >>> At How many servers does cassandra start really performing? >>> > >>> or how many servers is an ideal setup say for a game 10? >>> > >> >>> > >> It can use any number, three is probably a reasonable minimum, I >>> > >> don't >>> > >> know what the maximum is. >>> > >> >>> > >> If you have a small number of servers, there is probably no reason >>> > >> to use >>> > >> Cassandra; you can more usefully use a conventional database with >>> > >> replication or sharding. >>> > >> >>> > >> The reason you might want to use Cassandra is to scale writes a lot, >>> > >> to >>> > >> levels you couldn't reach with more "conventional" databases. >>> > >> >>> > >> In all likelihood, an application would use Cassandra to store >>> > >> high-volume >>> > >> high-write data alongside a more conventional database to store >>> > >> smaller, >>> > >> less frequently changing stuff. >>> > >> >>> > >> It appears to me that Cassandra 0.3 is only really useful if running >>> > >> on a >>> > >> homogenous cluster of dedicated servers with reasonable amounts of >>> > >> memory / >>> > >> storage (But not necessarily high spec servers of CPU, IO speed or >>> > >> internal >>> > >> redundancy). >>> > >> >>> > >> Once the load balancing is implemented in 0.5 (according to current >>> > >> plans) >>> > >> it will become more useful for heterogenous environments. >>> > >> >>> > >> Mark >>> > > >>> > > >>> > > >>> > > -- >>> > > Bidegg worlds best auction site >>> > > http://bidegg.com >>> > > >>> >>> -- >>> ------------------------------------------------------------------------ >>> Anthony Molinaro <[email protected]> >> >> >> >> -- >> Bidegg worlds best auction site >> http://bidegg.com > > > > -- > Bidegg worlds best auction site > http://bidegg.com >
