This is an old and simple perl CGI script that accepts errors from a site, and saves to a database. A separate script reports/alerts. It's stood the test of time and saved me a from having to subscribe to server error monitoring services.
http_errors.pl - accepts errors via HTTP (X-AUTH key needs to be in the header, and site and error parameters must exist)
report_errors.pl - reports/alerts errors (triggered by cron)
You'll need Apache set up with CGI support, and a publicly-accessible URL with a cgi-bin. You'll also need access to MySQL.
- Set up an alert instance on ntfy.sh (free)
- Install the perl modules noted at the top of that script.
- Modify the parts of http_errors.pl denoted by
CHANGE THIS - Set proper permissions:
chmod 755 http_errors.pl
chmod 755 report_errors.pl
- Import the db schema:
mysql -u YOURUSER -p YOURDB < error_logger.sql
- Set up a cronjob to run the alerts:
*/5 * * * * /home/YOURUSER/bin/report_errors.pl > /home/YOURUSER/logs/report_errors_fails.log 2>&1
It will accept POST or GET requests from anywhere, but only if the X-AUTH header is set to the correct key (noted in the script itself).
example request:
curl -X POST -H "X-AUTH: p5dAAHNK7HenGyk8ZGWwJ2VRtmFY" -d "site=mysite.com&error=Internal Server Error" http://YOURSERVER.com/cgi-bin/http_errors.pl
if running an application service you would configure your error logger to send the error to this script.