Pivotal/Cloud Foundry/Tasks

Cloud Foundry | Cloud Foundry CLI | Apps | Tasks

Blue/Green App Deployment

Push an app

start by pushing the app and defining the subdomain (hostname) and domain.

~$ cf push web-app -n daring-wildebeest -d cfapps.io

Update the app and push a new version

This will be done along side the old version and given a new subdomain. The old version will retain its existing route and traffic to it will still go to the old app version.

~$ cf push web-app-2 -n responsive-aligator -d cfapps.io

Map original route to new app

Now that we have (2) separate instances of the web-app running, one of the old version and one of the new version, we can map the old route to the new app. This will not replace the old app, instead both the old and new apps will be accessible from the old route (quasi load balanced).

~$ cf map-route web-app-2 cfapps.io --hostname web-app-daring-wildebeest

Remove old app from old route

Next we can remote the old app from the old route, leaving only the new app accessible from the old route.