How to find the process that is using the port 80 and apache server.

vamshikrishnab · May 22, 2008, 7:10am

When i used the command 'netstat -a|grep 80' it given that port 80 is in listening mode.

I had used the following command:
telnet localhost 80
GET /

I had got some HTML script.

But when I accessed the GUI ( url is http:// ip address of server/hawk.htm )which uses the script '/usr/local/apache/htdocs/hawk.htm' using apache server ( for which default server is 80 and document root is "/usr/local/apache/htdocs") it is different.

Why this is happening.

I am little confused here.

sparcguy · May 22, 2008, 8:14am

friend there is no command that you can execute that will tell you which process id tied to port 80, stop creating threads everywhere.

To trace what is using a certain port

netstat -an | grep \\.80

will list out the IP address that is using port 80, then of course from there once you have the IP address you should know in your company/organisation which are the webservers that are using which IP address, this knowledge is domain you must know.

The purpose of using telnet localhost 80; GET /

is used for troubleshooting to isolate problems only. If client cannot access url but when determined that telnet GET / is able to return some ascii output means there's nothing wrong with webserver and isolate that it's probably a client connectivity issue.

Of course when you are troubleshooting you must also know what you are doing.

era · May 22, 2008, 8:29am

Actually lsof can tell you which process is listening to a port.

vamshikrishnab · May 22, 2008, 8:57am

sparcguy:

friend there is no command that you can execute that will tell you which process id tied to port 80, stop creating threads everywhere.

To trace what is using a certain port

netstat -an | grep \\.80

will list out the IP address that is using port 80, then of course from there once you have the IP address you should know in your company/organisation which are the webservers that are using which IP address, this knowledge is domain you must know.

The purpose of using telnet localhost 80; GET /

is used for troubleshooting to isolate problems only. If client cannot access url but when determined that telnet GET / is able to return some ascii output means there's nothing wrong with webserver and isolate that it's probably a client connectivity issue.

Of course when you are troubleshooting you must also know what you are doing.

When i given the command netstat it resulted as follows (not IP)

netstat -an | grep \\.80

  *.80                 \*.*                0      0 49152      0 LISTEN

vamshikrishnab · May 22, 2008, 8:59am

when i given 'lsof' it resulted as:

lsof: Command not found

system · May 22, 2008, 9:11am

Are you sure you have the correct document root ?
run

ps -ef | grep http

and make sure you are looking at the correct apache instance, there are 2 in Solaris, so it depends on which one you are running

jlliagre · May 22, 2008, 1:07pm

lsof is not part of Solaris and doesn't support it properly anyway.

Use pfiles instead.

i.e.:

pfiles /proc/* > /tmp/pfiles.out

Then look for which process is using port 80 by searching "port: 80" in the pfiles.out file.

system · May 22, 2008, 6:56pm

He has fixed the problem.
See this thread