cronBasher: Launch cron script

cronBasher helps you to launch command from cron and handle environment variables from Kuberancher. cronBasher locked commands, to avoid launching multiple command in parallel.

Environment variables

PATH_CRON_BASHER: Path to cronBasher project. Set this variable into /etc/crontab DATADOG_URL: URL to log to Datadog. Keep empty to not send log
DATADOG_APP_API_KEY: your Datadog APP key
ENVIRONMENT: working environment

launch_cron.sh

Remember that scripts launched by cron do not have access to environment variables. This script copy environment variables into the file /etc/environment and launch cron Has we launch our script into Kuberancher pod, we use an ENTRY_POINT on this script, and run cron in foreground (cron -f)

Simple command

Set PATH_CRON_BASHER into /etc/crontab and the line :

* * * * *   www-data  cd PATH_CRON_BASHER && ./simple_command.sh

This command use function launchScript. The first argument is a string with the command to run.

Recursive command

The way of recusive command, is to launch again the command if an action has been made. cronBasher read the number of actiows on the output. If it's not equals to 0, cronBasher will run command again. It will stop in case of non-zero exit status.

* * * * *   www-data  cd PATH_CRON_BASHER && ./recursive_command.sh

This command use function launchUntilScript. The first argument is a string with the command to run, the seond one is a message to print with the number of stuffs done.

Send log to Datadog

Send all error log to Datadog

Right

Do not forget to add the executable right on your script.