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chore(argo-cd): Remove deprecated features and redesign Ingress (#2407)

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* chore(argo-cd): Remove deprecated features

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Remove wildcard catch all ingress rule

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Add ingress extra rules

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Remove unnecessary ingress variables

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Improve documentation

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Replace ingress paths and hosts with single backend service

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Use only port number to support all ingress controllers

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Minor gRPC fixes

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Simplify TLS configuration

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Decouple AWS and GKE ALB from generic ingress

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Remove map nesting for ApplicationSet ingress

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Use example.com domain

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Remove fallback for argocd-cm checksum annotation

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Add revisionHistoryLimit for controller

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Update README

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

* Update README

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>

---------

Signed-off-by: Petr Drastil <petr.drastil@gmail.com>
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@ -104,15 +104,84 @@ For full list of changes please check ArtifactHub [changelog].
Highlighted versions provide information about additional steps that should be performed by user when upgrading to newer version.
### 6.0.0
This version **removes support for**:
* deprecated component options `logLevel` and `logFormat`
* deprecated component arguments `<components>.args.<feature>` that were replaced with `configs.params`
* deprecated configuration `server.config` that was replaced with `configs.cm`
* deprecated configuration `server.rbacConfig` that was replaced with `configs.rbac`
Major version also contains breaking **changes related to Argo CD Ingress** resources that were hard to extend and maintain for various ingress controller implementations.
Please review your setup and adjust to new configuration options:
* catch all rule was removed for security reasons. If you need this please use `server.ingress.extraRules` to provide ingress rule without hostname
* ingress rule for `paths` changed to `path` as there is only single Argo CD backend path
* ingress rule for `hosts` changed to `hostname` as there can be only single SSO redirect for given hostname
* ingress TLS for server uses by default `argocd-server-tls` secret required by Argo CD server, additional ingresses are using `<hostname>-tls` secret when `tls: true`
* additional hostnames and routing can be provided via `extraHosts` configuration section
* additional TLS secrets can be provided via `extraTls` configuration section
Specific ingress implementations for cloud providers were decoupled from generic ingress resource.
To configure AWS Application Load Balancer:
```yaml
server:
ingress:
enabled: true
controller: aws
annotations:
alb.ingress.kubernetes.io/backend-protocol: HTTPS
alb.ingress.kubernetes.io/listen-ports: '[{"HTTPS":443}]'
aws:
backendProtocolVersion: HTTP2
serviceType: NodePort
```
To configure GKE Application Load Balancer:
```yaml
configs:
params:
"server.insecure": true
server:
service:
annotations:
cloud.google.com/neg: '{"ingress": true}'
cloud.google.com/backend-config: '{"ports": {"http":"argocd-server"}}'
ingress:
enabled: true
controller: gke
gke:
backendConfig:
healthCheck:
checkIntervalSec: 30
timeoutSec: 5
healthyThreshold: 1
unhealthyThreshold: 2
type: HTTP
requestPath: /healthz
port: 8080
frontendConfig:
redirectToHttps:
enabled: true
```
### 5.53.0
Argocd-repo-server can now optionally use Persistent Volumes for its mountpoints instead of only emptydir()
### 5.52.0
Because [Argo CD Extensions] is now deprecated and no further changes will be made, we switched to [Argo CD Extension Installer], adding an Argo CD Extension Installer to init-container in the Argo CD API server.
If you used old mechanism, please move to new mechanism. For more details, please refer `.Values.server.extensions` in values.yaml.
### 5.35.0
This version supports Kubernetes version `>=1.23.0-0`. The current supported version of Kubernetes is v1.24 or later and we align with the Amazon EKS calendar, because many AWS users follow a conservative approach.
Please see more information about EoL: [Amazon EKS EoL][EKS EoL].