I have a 3rd party application that exposes in-memory data structures via a JDBC api over RMI.
How can I get data out of that database api without having to run squirrel or similar GUI application?
Perl solution preferred, but java solution acceptable.
I have many processes on a box listening on several ports.
I am trying to map ports to pids.
The problem is that lsof is not telling me what ports belong to which process.
Given an apache listening on port 80, I can see it listening via netstat:
user@host% netstat -an|grep LISTEN|grep 80
*.80 *.* 0 0 49152 0 LISTEN
But when I try to map port 80 to a pid I get nothing:
user@host% lsof -iTCP:80 -t
When I try seeing what sockets that specific pid is using I get:
user@host% lsof -lnP -p31 -a -i
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
libhttpd. 31 0 15u IPv4 0x6002d970b80 0t0 TCP *:65535 (LISTEN)
Notice the *:65535 in the NAME column.
Does anyone know why lsof is not reporting the port in use?
I am running as root.
I am using a mix of lsof and os versions:
lsof v4.77 on Solaris10 sparc
lsof v4.72 on Redhat4.2
etc
I know that linux solutions can use "netstat -p",
so I guess I'm only looking for why solaris isn't working,
but I find lsof is frequently silent and not showing me expected data.
I'm monitoring the TCP stack on a server hoping to generically infer problems with application on the box.
My first inclination is to measure the number of sockets in all reported states (LISTEN,ESTABLISHED,FIN_WAIT2,TIME_WAIT, etc) and detect some anomalies.
A teammate suggests that 'lsof' would be a better tool to see what state the TCP stacks are in.
Any preferences or experience tips from the serverfault crowd?
Running a heterogeneous environment is always a challenge. Having an enterprise with AIX, IRIX, HPUX, Ultrix, Solaris, and several flavors of Linux, what is a good universal PATH setting that allows a good common set of commands, but also includes the extras, like 'ifconfig', 'ping', and 'make' that are often not there by default?