问题
I had MAMP installed (and working fine) then I tried to install mongoDB through macPorts. macports then began installing a bunch of dependencies. after that, http://localhost started giving an "It Works!" screen. after rebooting to see if it might fix it, I found that I could not start my MAMP server. console said this:
9/13/10 1:20:54 PM [0x0-0x12012].de.appsolute.MAMP[133] (48)Address already in use: make_sock: could not bind to address [::]:80
I know that macPorts did something stupid to mess with me. how can I find out what it installed thats stealing port:80?
here's some command I've tried: (:80 didn't work, so I just used 80)
$ sudo netstat -an | grep 80
Password:
tcp46 0 0 *.80 *.* LISTEN
udp6 0 0 fe80::21e:52ff:f.123 *.*
udp6 0 0 fe80::1%lo0.123 *.*
and:
$ lsof -i :80
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
firefox-b 451 biting_duck 39u IPv4 0x0ab806b0 0t0 TCP 192.168.0.198:49515->stackoverflow.com:http (ESTABLISHED)
firefox-b 451 biting_duck 40u IPv4 0x0ab87ec8 0t0 TCP 192.168.0.198:49517->sstatic.net:http (ESTABLISHED)
firefox-b 451 biting_duck 41u IPv4 0x0ab88aec 0t0 TCP 192.168.0.198:49516->pz-in-f95.1e100.net:http (ESTABLISHED)
firefox-b 451 biting_duck 42u IPv4 0x0ab97334 0t0 TCP 192.168.0.198:49518->sstatic.net:http (ESTABLISHED)
firefox-b 451 biting_duck 47u IPv4 0x0ab87abc 0t0 TCP 192.168.0.198:49519->sstatic.net:http (ESTABLISHED)
firefox-b 451 biting_duck 48u IPv4 0x0ab886e0 0t0 TCP 192.168.0.198:49520->sstatic.net:http (ESTABLISHED)
firefox-b 451 biting_duck 50u IPv4 0x0ab89b1c 0t0 TCP 192.168.0.198:49521->sstatic.net:http (ESTABLISHED)
firefox-b 451 biting_duck 51u IPv4 0x0ab86680 0t0 TCP 192.168.0.198:49522->peak-colo-196-216.peak.org:http (ESTABLISHED)
firefox-b 451 biting_duck 54u IPv4 0x0ab81ef8 0t0 TCP 192.168.0.198:49523->gravatar.com:http (ESTABLISHED)
firefox-b 451 biting_duck 55u IPv4 0x0ab82710 0t0 TCP 192.168.0.198:49524->gravatar.com:http (ESTABLISHED)
firefox-b 451 biting_duck 56u IPv4 0x0ab8a334 0t0 TCP 192.168.0.198:49526->64.34.80.176:http (ESTABLISHED)
firefox-b 451 biting_duck 57u IPv4 0x0ab812d4 0t0 TCP 192.168.0.198:49525->pv-in-f101.1e100.net:http (ESTABLISHED)
回答1:
From what you describe about launchd errors and /private/etc/apache2/httpd.conf, it sounds like the copy of Apache installed with the base OS got turned on. Check System Preferences -> Services -> Web Service, and turn it off if needed. If it's not turned on there, try:
sudo launchctl unload -w /System/Library/LaunchDaemons/org.apache.httpd.plist
...and if that doesn't work, take a look in /Library/LaunchDaemons to see if something else has been installed that's launching the system copy of Apache (/usr/sbin/httpd).
回答2:
On Max OS 10.1, Mountain Lion, turning off apache fixed this problem for me.
sudo apachectl stop
回答3:
The MongoDB port doesn't install anything that would require or use port 80. Nor does any of its dependencies. Furthermore, the only way a MacPorts port could grab port 80 on startup is if it installed a launch daemon, but MacPorts doesn't activate any launch daemons on its own (you have to do that manually).
However, you can find out what program is listening on a particular port by executing
$ lsof -i :<port>
For example,
$ lsof -i :80
will show you the program listening on port 80. That should narrow down what is grabbing the port.
回答4:
Make sure your httpd.conf files are correct. This means: No more then 1 'Listen 80'. If you have Listen 80 (or whatever port) more then once, this will trigger the binding error.
I hope this is useful to you :)
回答5:
OS X had inbuilt apache webserver installed, which is located on /etc/apache2. The message ""It Works!" is displayed when somehow the apache webserver is started. Below are the process to stop/ start it.
sudo apachectl stop
sudo apachectl start
sudo is needed as webserver access port 80.
回答6:
If some service defines that it will listen to port 80, launchd will reserve it during the initial boot. It can be apache, but it can be something else as well. If you do not have apache, but have this problem try
cd ~/Library/LaunchAgents
grep -R 80 .
cd /System/Library/LaunchDaemons
grep -R 80 .
It should show you agents listening to port 80. Uninstall and restart!
来源：https://stackoverflow.com/questions/3703751/how-do-i-find-out-how-macports-stole-my-port80