Helm charts for Workflow Status.md

#Install

Workflow 2.3.0 and 2.4.1 can be installed using the new helm and can do the same customizations of the components/storage as helm-classic.The customizations are applied in a cleaner way than helm-classic where we had a shell script. The install process is also the same as helm-classic, you fetch a chart using helm fetch then change the default values for customizations and helm install.

##Different from helm-classic

• Users can longer use environment variables to set values for customizations.(helm/helm#944)

#Composable

The new workflow charts are set of individual charts grouped together.Current structure is:

• Workflow
  • builder
  • controller
  • database
  • logger
    • fluentd
    • redis
  • minio
  • monitor
    • grafana
    • influxdb
    • telegraf
  • nsqd
  • registry-token-refresher
  • registry
    • registry-proxy
  • router
  • workflow-manager

#Upgrade

Upgrades to the workflow charts works using the new helm but with certain limitations. helm upgrade just updates the pods of the deployment objects(helm/helm#1120) and hence the pods of the daemonsets and replications controller needs to be manually updated by deleting the exisitng pods.

##Different from helm-classic

• Upgrades gonna be much simpler if user doesn't want to change the storage or registry locations. Just a helm fetch <new-version> and helm upgrade <new-version will do. For now he has to delete the pods of Rc's and daemonsets until helm fixes the issue.

#Pending Tasks

• Move everything from RC's to Deployments once deis/charts#346 is merged.
• Apply deis/charts#333 once decided on what to use. Also document it.

#Testing Instructions

To play with the new helm charts

helm install https://raw.githubusercontent.com/kmala/charts/helm/deis-workflow-v2.3.0.tgz --namespace=deis or

helm repo add <repo_name> https://raw.githubusercontent.com/kmala/charts/helm/
helm fetch <repo_name>/deis-workflow-v2.4.1
helm install deis-workflow-v2.4.1.tar