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chore(argo-cd): Add chart tests and usage info in README for HA (#951)

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* chore: Reconfigure KinD to 1 control-plane and 3 worker nodes

This prepares chart testing of 'argo-cd' chart with redis-ha enabled. Redis-ha defines hard pod anti-affinity and requires multiple worker nodes.

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* chore(argo-cd): Add chart tests for HA

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* Add HA chapter to README

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* Skip HPA tests of ArgoCD

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>
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Marco Kilchhofer 2021-10-19 17:50:42 +02:00 • committed by GitHub
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46
charts/argo-cd/README.md
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@ -10,8 +10,52 @@ This is a **community maintained** chart. This chart installs [argo-cd](https://
The default installation is intended to be similar to the provided ArgoCD [releases](https://github.com/argoproj/argo-cd/releases).
This chart currently installs the non-HA version of ArgoCD.
## High Availability
This chart installs the non-HA version of ArgoCD by default. If you want to run ArgoCD in HA mode, you can use one of the example values in the next sections.
Please also have a look into the upstream [Operator Manual regarding High Availability](https://argoproj.github.io/argo-cd/operator-manual/high_availability/) to understand how scaling of ArgoCD works in detail.
> **Warning:**
> You need at least 3 worker nodes as the HA mode of redis enforces Pods to run on separate nodes.
### HA mode with autoscaling
```yaml
redis-ha:
enabled: true
controller:
enableStatefulSet: true
server:
autoscaling:
enabled: true
minReplicas: 2
repoServer:
autoscaling:
enabled: true
minReplicas: 2
```
### HA mode without autoscaling
```yaml
redis-ha:
enabled: true
controller:
enableStatefulSet: true
server:
replicas: 2
env:
- name: ARGOCD_API_SERVER_REPLICAS
value: '2'
repoServer:
replicas: 2
```
### Synchronizing Changes from Original Repository
In the original [ArgoCD repository](https://github.com/argoproj/argo-cd/) an [`manifests/install.yaml`](https://github.com/argoproj/argo-cd/blob/master/manifests/install.yaml) is generated using `kustomize`. It's the basis for the installation as [described in the docs](https://argo-cd.readthedocs.io/en/stable/getting_started/#1-install-argo-cd).