Is the passenger process already running? but its not

Question

Trying to start standalone standalone with passenger start -p 80, and he says that it already works, but when I do passenger stop -p 80, I get According to the PID file '/var/crm/tmp/pids/passenger.80.pid', Phusion Passenger Standalone doesn't seem to be running. But this is clearly not because when I try to stop it, it says that it does not work, and I can’t access to him from the Internet.

[root@technetium crm]# passenger start -p 80
*** ERROR ***
The address 0.0.0.0:80 is already in use by another process, perhaps another
Phusion Passenger Standalone instance.

If you want to run this Phusion Passenger Standalone instance on another port,
use the -p option, like this:

  passenger start -p 81

Answer 1

try running lsofor netstat -tlnp | grep 80to determine which application is using port 80. After you figure this out, you can do something like ps -elf to kill this process.