Cyberpanel Openlitespeed Issue with PHP Session Files Cleanup on Ubuntu 18

April 13, 2021
1 minute read

There’s an issue with the Cyberpanel installation using Openlitespeed on Ubuntu 18 where the PHP session files aren’t removed by the system installed.

You might see issues in your /usr/local/lsws/log/error.log like this

  60789 2021-04-12 10:58:36.099775 [WARN] [30587] [UDS://tmp/lshttpd/wordp1606.sock] Can not start this external application.
  60790 2021-04-12 10:58:36.099798 [NOTICE] [30586] [billi9809.655340]: Failed to open pid file [/tmp/lshttpd/billi9809.sock.pid]: No space left on device
  60791 2021-04-12 10:58:36.099823 [ERROR] [30586] [billi9809.655340]: Failed to lock pid file for [/tmp/lshttpd/billi9809.sock]: No space left on device
  60792 2021-04-12 10:58:36.099838 [WARN] [30586] [UDS://tmp/lshttpd/billi9809.sock] Can not start this external application.
  60793 2021-04-12 10:58:36.099853 [INFO] [30586] [UDS://tmp/lshttpd/wordp1606.sock] Error Timeout, restart and try again!
  60794 2021-04-12 10:58:36.099862 [NOTICE] [30589] [billi9809.655340]: Failed to open pid file [/tmp/lshttpd/billi9809.sock.pid]: No space left on device
  60795 2021-04-12 10:58:36.099883 [ERROR] [30589] [billi9809.655340]: Failed to lock pid file for [/tmp/lshttpd/billi9809.sock]: No space left on device

The cause is related to the build of of PHP session files in the /tmp folder, which usually is cleaned out by a cronjob in /etc/cron.d/php that calls /usr/lib/php/sessionclean which of course fails to running correctly due to lsphp nor working as intended.

The solution? Create a cronjob to delete the sess_ files. Here’s an example I found online

❯ cat lsphp-session
#!/bin/bash
export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
path_of_session_files=/tmp
find $path_of_session_files -type f -cmin +720 -name "sess_*" -delete

Add this code to a file an placed it in /etc/cron.daily, make sure to chmod u+x so its executable.

That’s it!

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