Display any tcp connections to apache

for i in `ps aux | grep httpd | awk '{print $2}'`; do lsof -n -p $i | grep ESTABLISHED; done;
Sometimes apache will get stuck in an established state where you can't get a list of the connecting IP's from mod_status... not a good thing when you need to ban an abusive ip.

6
By: Shadow
2009-02-05 17:50:52

1 Alternatives + Submit Alt

  • Where COMMAND is the process(es) name. I prefer to get all states but you may add ESTABLISHED in the grep regex. lsof -c apache2 | egrep -o 'TCP.*ESTABLISHED.*$' -nP flags are optional and UDP is irrelevant for established connections Similar but using the process id: lsof -nP -p PID | egrep -o '(TCP|UDP).*$' Show Sample Output


    0
    lsof -nP -c COMMAND | egrep -o '(TCP|UDP).*$' | sort -u
    forcefsck · 2011-01-25 12:04:13 3

What Others Think

I can't seem to get this one working, using Ubuntu 8.04 here's the output: I even tried it with sudo... eseven73@server:~$ for i in `ps aux | grep httpd | awk '{print $2}'`; do lsof -n -p $i | grep ESTABLISHED; done; eseven73@server:~$ for i in `ps aux | grep httpd | awk '{print $2}'`; do lsof -n -p $i | grep ESTABLISHED; done; eseven73@server:~$ sudo !! sudo for i in `ps aux | grep httpd | awk '{print $2}'`; do lsof -n -p $i | grep ESTABLISHED; done; bash: syntax error near unexpected token `do'
eseven73 · 710 weeks and 1 day ago
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Perfecthomepugs · 5 weeks ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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