rowg/pycodaralert

Send e-mail alerts when sites fail to upload files to combined server.

PyCodarAlert

PyCodarAlert AAAA BBBB CCCC DDDD

Python program (run on combined server) that finds the latest radial files from each site and emails an alert per site if file age > trigger hours old. This program only knows if a site hasn't uploaded files to the combined server in the configured interval.

Tested on OS X with Python 2.6. No external dependencies. It should be Python 3 friendly but I don't have a combined server with Python 3 to test it.

The program will write a small text file in the configured directory (default is ./) for each site alert with the name XXXX_last_email.txt where XXXX is the site code. The file contains the date and time the e-mail was sent so that the next run of the program won't send another e-mail unless the email_frequency interval has been met for that site. This allows the script to be run frequently without a barrage of e-mails coming in. If you know a site is down and don't wish to continue receving e-mails about it, remove it from the command line invocation.

Call this script periodically with cron.

Every 15 minutes example crontab line (to check sites AAAA BBBB CCCC DDDD):

00,15,30,45 * * * * /Users/codar/PyCodarAlert AAAA BBBB CCCC DDDD >/dev/null 2>&1

Customization Requirements:

You will need to customize this script to fit the setup and needs of your organization. The variables that should be changed are at the top of the script. You may need to make some changes to the code for the e-mail function depending on your org's smtp servers. Configuration information below:

E-mail parameters (fill in with your organization's settings)

smtp_server = 'smtp.organization.edu'

body_text = 'PyCodarAlert message:\n' (You should probably leave this as-is)

sender_name = '[email protected]'

recipients_list = ['[email protected]', '[email protected]', '[email protected]']

email_subject = '[CODAR ALERT] Site:'(Leave this as-is too)

How often (in hours) an email can be sent (so you don't spam yourself)

email_frequency = 4

How stale (in hours) a radial file must be to trigger an alert

alert_trigger = 12

Radial files root directory. Script will walk directory tree from here.

radial_root = '/Codar/SeaSonde/Data/RadialSites'

Put 4 character site names here. This can be overridden at runtime.

site_names = ['AAAA', 'BBBB', 'CCCC', 'DDDD', 'EEEE'](These will ONLY be used if NO command line sites are invoked)