cron

README

Cron Controller

This directory contains a simple cron controller. This app implements scheduled jobs.

You can create scheduled jobs using a ThirdPartyResource

Create the ThirdPartyResource

Create the CronTab ThirdPartyResource object to enable the CronTab API.

$ kubectl create -f resource.yaml

CronTab objects can then be created with the following format.

apiVersion: "alpha.ianlewis.org/v1"
kind: "CronTab"
metadata:
  name: <name>
spec:
  schedule: "<cron spec>"
  jobTemplate:
    <job template>

See an example in the test-crontab.yaml file.

Building

Build and tag the image:

$ make image

Push the image:

$ make push

Deploy

Create the cron-controller deployment.

$ kubectl create -f deploy.yaml

Documentation

Overview

Command simple-crontab-controller implements a crontab controller that watches for CronTab third party resources and runs a cron control loop for each. If the crontab is modified, then the cron loop is restarted with the new configuration. If it is deleted then the cron loop is stopped.