Wow… wheres this been all my life. I don’t see why this can’t be set by
default? https://issues.apache.org/jira/browse/CASSANDRA-7087
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Chris Lohfink
On Apr 24, 2014, at 11:48 AM, Steven A Robenalt wrote:
> There's a little-known change in the way JMX uses ports that was add to
> JDK7u4 w
There's a little-known change in the way JMX uses ports that was add to
JDK7u4 which simplifies the use of JMX in a firewalled environment.
The standard RMI registry port for JMX is controlled by the
com.sun.management.jmxremote.port property. The change to Java 7 was to
introduce the related com.
The way RMI (which JMX uses, which is what nodetool uses) works is it will
first connect, then send a address/port back over the wire for it to make a new
2nd connection too. This will be potentially to a different address then
127.0.0.1 (can override with -Djava.rmi.server.hostname= in
/etc/c
That's good to hear because it does present a problem for
a strictly manages and firewalled campus environment.
Maxim
On 2/6/2012 11:57 AM, Nick Bailey wrote:
JMX is not very firewall friendly. The problem is that JMX is a two
connection process. The first connection happens on port 7199 and t
JMX is not very firewall friendly. The problem is that JMX is a two
connection process. The first connection happens on port 7199 and the
second connection happens on some random port > 1024. Work on changing
this behavior was started in this ticket:
https://issues.apache.org/jira/browse/CASSANDRA
Do you allow both outbound as inbound traffic? You might also try allowing
both TCP as UDP.
2012/2/6 Roshan
> Yes, If the firewall is disable it works.
>
> --
> View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/nodetool-hangs-and-didn-t-print-anythi
Does it work with iptables disabled?
You could add log to your firewall rules to see if firewall is
dropping the packets.
On Sun, Feb 5, 2012 at 5:35 PM, Roshan wrote:
> Hi
>
> I have 2 node Cassandra cluster and each linux box configured with a
> firewall. The ports 7000, 7199 and 9160 are open
