Initial step towards v2

[zroubalik]

Initial step towards v2.

This version should able to scale any Resource that implements /scale subresource, ie. Deployment, StatefulSet, ArgoRollout etc. KEDA should be able to get secrets from container and TriggerAuthentication - the same as previous version.

Scaling of Job is not implemented yet.

Instructions on how to try this version, please give it a try:

git clone git@github.com:zroubalik/keda.git -b v2
cd keda
kubectl apply -f deploy/crds/keda.sh_scaledobjects_crd.yaml
kubectl apply -f deploy/crds/keda.sh_scaledjob_crd.yaml
kubectl apply -f deploy/crds/keda.sh_triggerauthentications_crd.yaml
kubectl apply -f deploy/

apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: {scaled-object-name}
spec:
  scaleTargetRef:
    apiVersion:    {apiVersion-of-object-to-scale}     # Optional. Default: apps/v1
    kind:          {kind-of-object-to-scale}.          # Optional. Default: Deployment
    name:          {name-of-object-to-scale}
    containerName: {name-of-container-to-lookup-env}   # Optional.
  pollingInterval: 30  # Optional. Default: 30 seconds
  cooldownPeriod:  300 # Optional. Default: 300 seconds
  minReplicaCount: 0   # Optional. Default: 0
  maxReplicaCount: 100 # Optional. Default: 100
  triggers:
  # {list of triggers to activate the deployment}

Major changes

• update operator-sdk & deps, k8s v0.17.4
• introduce version 2.0.0-alpha1
• change apiGroup to keda.sh
• introduce separate ScaledObject and ScaledJob
• ScaledObject scales any resource with /scale subresource

Fixes #703
Fixes #701
Fixes #552
Fixes #595
Fixes #497
Partial fix for #653

[ahmelsayed]

curious about the update. Is it intentional?

[zroubalik]

I tried to update as much dependencies to the latest versions as possible. This was brought by updating some of the Azure deps. I was forced to update this particular import due to changes in the api. We can try to revert this, if you think that it is a problem.

[zroubalik]

I will follow up with more PRs once this one gets into v2 branch. There are still things to be done, eg. ScaledJobs, refactoring of resolvEnv functions, autoscaling v2beta2, etc.

I didn't want to put all the changes into one PR, as it would be hard to review it.

Once you are OK with this PR, let me know and I will push these commits into v2 branch. master branch is not being affected by this PR.

[tomkerkhove]

You are a hero!

[zroubalik]

I am going to merge this one into v2 branch and follow up with some PRs that are building on top of this initial work.

[tomkerkhove]

Ok for me!