example on how to send notification email if cron fails

as we don’t have notifications based on cronjobs yet (will be implemented in https://github.com/amazeeio/lagoon/issues/618) we could create a simple bash wrapper around commands like drush cron which would check the return code of the command and send an email to the owner of the site. All of this should be built in pure bash and not with any changes in lagoon.

[fjgarlin]

Could we use the notification system used for the project? If we have Slack or Rocketchat notifications for the project, it’d be great that these notifications would go there by default too, with kind of zero set up or just an env variable to enable these notifications.

[fago]

thx, this is working great! @shreddedbacon

I’ve slightly improved the script:

#!/bin/bash

TO_ADDR=${CRON_NOTIFY_TO_ADDR:-"your-defaults-there"}
FROM_ADDR=${CRON_NOTIFY_FROM_ADDR:-"NOREPLY <[e-mail]>"}

ERRFILE=$(mktemp)
SUBJECT="drush cron failure at $LAGOON_SAFE_PROJECT $LAGOON_GIT_BRANCH"
COMMAND="drush cron"

if ($COMMAND 2> >(tee $ERRFILE)) ; then
  echo "Cron exited clean"
else
  echo "Cron failed, sending email"
  ERROR=$(<$ERRFILE)
  sendmail $TO_ADDR <<EOF
To: $TO_ADDR
Subject: $SUBJECT
From: $FROM_ADDR

Command $COMMAND failed at $LAGOON_SAFE_PROJECT $LAGOON_GIT_BRANCH.
The error was:
$ERROR
EOF
rm $ERRFILE
fi