cf-zdd-plugin

Zero downtime deployment plugin for Cloud Foundry

Assets

Binaries are available for download in the releases section of this respository.

Requirements

Currently built with Go 1.10.2, and CloudFoundry CLI v6.36.1. The below dependencies are also required.

go get code.cloudfoundry.org/cli/plugin
go get github.com/onsi/ginkgo
go get github.com/onsi/gomega
go get github.com/andrew-d/go-termutil

Build

go build cf_zdd_plugin.go

Install

cf install-plugin cf_zdd_plugin
cf plugins

deploy-zdd

Zero downtime deployments for applications. The plugin is designed to deploy applications without impact to the current version. Current scenarios covered:

• For a new deployment, application is pushed and started according to manifest contents
• For a update deployment, the application is pushed and then scaled over to the new version
• For a redeployment of the same version, the old application is renamed and the new application is pushed, the new application is then scaled over to
  The method then leverages scaleover mechanism as described below.

Usage

cf deploy-zdd myapplication -base-name myapp -f path/to/manifest.yml -p path/to/application 15s

myapplication - my application name
-base-name - [Optional] base name of application if you are using versioned application names, i.e. myapplication-1.2.3 the base name would be myapplication
--f - path to application manifest
--p - path to deployable artifact 15s - duration in which to deploy application

deploy-canary

The deploy-canary method deploys a single instance of an application under a custom route that can then be tested against before calling the counterpart promote-canary below.
Usage

cf deploy-canary mycanaryapp -f path/to/manifest.yml -p path/to/application

mycanaryapp - my application name
-f - path to application manifest
-p - path to deployable artifact

promote-canary

The promote-canary method takes the deployed canary application and deploys it to become the live application, as before this utilizes the scaleover method.
Usage

cf promote-canary myapplication mycanaryapp 15s

myapplication - my application name
mycanaryapp - my canary name
15s - scaleover duration

scaleover

Scaleover rolls an application from one version to another without the extra capacity needed for blue/green deployments. The duration argument is the total time taken to roll the application from the old to the new version.
Usage

cf scaleover app1 app2 15s

app1 - my old application
app2 - my new application
15s - scaleover duration

blue-green

Blue green deployment deploys your code and then remaps the route from the old to the new versions.
Usage

cf blue-green myapplication -f path/to/manifest.yml -p path/to/application

--f - path to application manifest
--p - path to deployable artifact

##TODO

1. Remove opinions surrounding filenames and versions.
2. Another pass at refactoring.