CoreOS stable/alpha/beta version change notifications

[Vincent De Smet]

Hi All,

Based on https://github.com/coreos/bugs/issues/1020 - we had a similar need to get notifications whenever a new version was promoted to the channel of our interest.

So, I've created the following python script[1] to keep track of the current release by CoreOS release channel. 

The script is designed to run as a k8s CronJob[2] - it relies on a redis server to keep track of the version it last saw and can call a webhook when a key field changes (in my use case this is an operable/cog trigger[3]) - this notifies me on slack when the current CoreOS release for the channels I follow

1: https://github.com/honestbee/coreos-updatenotice

2: http://kubernetes.io/docs/user-guide/cron-jobs/

3: http://cog-book.operable.io/#_triggers

[Brandon Philips]

Great, thanks for the contribution.

What are you doing with the webhook?