CWD - Cron Watch Dog

tmkdev llc - 2016

I needed a simple web service to monitor small applications that are dependant on cron jobs running.

I found some SaaS solutions - none of them were exactly what I was looking for. (https://steward.io/, https://deadmanssnitch.com/, webcron.com)

So I wrote this.

Released as https://opensource.org/licenses/GPL-2.0 - GPL-2.0 opensource.

Setup:

Install the python requirements: sqlalchemy bottle bottle-sqlalchemy db driver of choice (Mysql and sqlite tested)

1. Copy configuration_dist.py to configuration.py. Edit with your values.

2. Add to apache. Or run as a stand alone service using Bottle.py's built in service. Or your favorite WSGI server.

   • if you use app.py and bottle's built in wsgi, it will start a thread for cwd_checker. Ignore 3.

3. Set the job monitor service to run. #CRONENTRY @reboot /usr/bin/python cwd_checker.py > logfile.log 2>&1;

4. Log in. Bottle starts service at 8080. Your apache conf should start it where you tell it.

5. Set up cwd_status.sh to run before and after your monitored jobs. Set up the URL vars as needed. cwd_status.sh jobnametomonitor start
   jobname && cwd_status.sh jobnametomonitor end
   || cwd_status.sh jobnametomonitor fail

6. Edit the periodicity of your job and SLA levels in the GUI.

Apache sample site conf (Needs Mod-wsgi) <Virtualhost *:80>

    WSGIPassAuthorization on
  	WSGIDaemonProcess cwd user=www-data group=www-data processes=1 threads=5
    WSGIScriptAlias /cwd /home/ubuntu/cwd/app.wsgi

	<Directory /home/ubuntu/cwd>
    	WSGIProcessGroup cwd
    	WSGIApplicationGroup %{GLOBAL}
	    Require all granted
    	Order deny,allow
	</Directory>