These are notes from getting ports open and setup for Hadoop
Turn Off Firewall;
service iptables save
service iptables stop
chkconfig iptables off
Hive is supposed to be running on 10000, but I found this;
nmap localhost
...
10000/tcp open snet-sensor-mgmt
See what app is listening on port (8080 for example);
lsof -i :8080
Testing Ports – use nc – the command which runs netcat
Can you listenat 9000? Try nc -l 9000
and in another console nc localhost 9000
, then all input will be echoed in the other console if the connection is good. Here is Ambari responding
nc localhost 8080
Hi
HTTP/1.1 400 Bad Request
Content-Length: 0
Connection: close
Server: Jetty(7.6.7.v20120910)
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