I manage a ftp box at work that takes in screenshots of students laptops that we manage. There are about 500+ images coming in everyday. That’s a ton of data that requires a ftp server that will stay working. Fortunatly because linux is awesome there proftpd, problem is it likes to randomly stop working or crash. I had this issue for a while but with a cool tool I was able to monitor the process and make sure it is always running. If it shuts down it will just start the process again…problem solved.
My original post was on AskUbuntu
Here is how to keep proftpd running
First install monit on your linux box that is running proftpd
Make sure you are all updated
sudo apt-get update sudo apt-get upgrade
Next install monit on your server
sudo apt-get install monit
Now we are going make a small edit to a monit file
cd /etc/monit/ vi monitrc
In the monitrc file look for this line
set httpd port 2812 and
And change it to
set httpd port 2812
Now un-comment this line
Now at the bottom of the file add these 4 lines, change your ftp port number if you have it different than 21
check process proftpd with pidfile /var/run/proftpd.pid start program = "/etc/init.d/proftpd start" stop program = "/etc/init.d/proftpd stop" if failed port 21 protocol ftp then restart
At the end just restart your service
Now go to your browser and go to your box domain name like this https://localhost:2812. You are going to have to have apache running on the server since monit shows you the results in the web browser.
Mine is localhost, yours might be something else like example.com
Also keep in mind that you can use this for any process
This is what it will look like
If you start the receive a “Execution failed | Does not exist” status in monit then check to make sure that proftpd PID matches in the PID file for proftpd.
First make sure proftpd is running
Then type top in terminal and find the PID of proftpd currently running.
Go to /var/run/proftpd.PID and make sure the PID in that file matches the one in top. If it does not then change it in the file and restart monit