https://github.com/aptible/docker-cron-example

DEPRECATED - Please see https://github.com/aptible/supercronic instead
https://github.com/aptible/docker-cron-example

Last synced: 12 days ago
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DEPRECATED - Please see https://github.com/aptible/supercronic instead

• Host: GitHub
• URL: https://github.com/aptible/docker-cron-example
• Owner: aptible
• License: mit
• Archived: true
• Created: 2014-09-05T02:43:08.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2017-07-12T12:46:26.000Z (over 7 years ago)
• Last Synced: 2024-08-01T22:54:13.535Z (3 months ago)
• Language: Makefile
• Homepage:
• Size: 7.81 KB
• Stars: 88
• Watchers: 9
• Forks: 27
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# ![](https://gravatar.com/avatar/11d3bc4c3163e3d238d558d5c9d98efe?s=64) aptible/cron-example

_Note: this repository is deprecated. Going forward, we recommend using

[Supercronic][supercronic] instead._

---

Example implementation of cron jobs on Docker/Aptible

## Installation and Usage

    git clone https://github.com/aptible/docker-cron-example

    cd docker-cron-example/

    make run

The example will print "aptible/docker-cron-example" once every minute.

## Including Within An App On Aptible

To include within an Aptible app, copy the following 5 body lines of the Dockerfile to your own Dockerfile:

    RUN apt-get -y install rsyslog

    ADD files/crontab /app/crontab

    RUN crontab /app/crontab

    ADD files/bin/start-cron.sh /usr/bin/start-cron.sh

    RUN chmod +x /usr/bin/start-cron.sh

    RUN touch /var/log/cron.log

* Installs ```rsyslog``` http://www.rsyslog.com/

* Copies ```crontab``` file from repo/app data to Docker and installs to user's ```crontab```

* Copies ```start-cron.sh``` from repo/app data to Docker

* Adjusts permissions

* Creates log file at ```/var/log/cron.log```

Then, copy ```files``` to your own repo, editing ```files/etc/crontab``` with your own task, and `* * * * *` with your own desired job schedule.

Crash course on cron(tab) job schedules https://en.wikipedia.org/wiki/Cron#Format. Consider the asterisk (```*```) like a wild card. Left to rigt the argument positions are:

```

[Minute Arg] [Hours Arg] [Day of month arg] [Month arg] [Day of week]

```

To run every 5 minutes:

```

*/5 * * * *

```

To run every 5 hours:

```

0 */5 * * *

```

Finally, add an entry in your Procfile for the new `cron` process:

    cron: /usr/bin/start-cron.sh

## Copyright and License

MIT License, see [LICENSE](LICENSE.md) for details.

Copyright (c) 2015 [Aptible](https://www.aptible.com) and contributors.

[](https://github.com/fancyremarker)

  [supercronic]: https://github.com/aptible/supercronic/