Auto-detect Kyverno version in policies chart (#4460)

* Auto-detect Kyverno version in policies chart

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

* Don't bump chart (another process will do this)

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

* Also don't bump version in README

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

Signed-off-by: David Young <davidy@funkypenguin.co.nz>
Co-authored-by: Charles-Edouard Brétéché <charled.breteche@gmail.com>

charts/kyverno-policies/Chart.yaml

@@ -23,6 +23,8 @@ annotations:
   artifacthub.io/prerelease: "false"
   # valid kinds are: added, changed, deprecated, removed, fixed and security
   artifacthub.io/changes: |
+    - kind: added
+      description: Add possibility to manually set kyvernoVersion and avoid autodetection
     - kind: added
       description: Support for artifacthub.io/changes annotation
     - kind: fixed

charts/kyverno-policies/README.md

@@ -77,6 +77,7 @@ The command removes all the Kubernetes components associated with the chart and
 | nameOverride | string | `nil` | Name override. |
 | customLabels | object | `{}` | Additional labels. |
 | background | bool | `true` | Policies background mode |
+| kyvernoVersion | string | `"autodetect"` | Kyverno version The default of "autodetect" will try to determine the currently installed version from the deployment |
 
 ## Source Code
 

charts/kyverno-policies/templates/_helpers.tpl

@@ -59,6 +59,7 @@ helm.sh/chart: {{ template "kyverno-policies.chart" . }}
 {{/* Get deployed Kyverno version from Kubernetes */}}
 {{- define "kyverno-policies.kyvernoVersion" -}}
 {{- $version := "" -}}
+{{- if eq .Values.kyvernoVersion "autodetect" }}
 {{- with (lookup "apps/v1" "Deployment" .Release.Namespace "kyverno") -}}
   {{- with (first .spec.template.spec.containers) -}}
     {{- $imageTag := (last (splitList ":" .image)) -}}
@@ -66,6 +67,9 @@ helm.sh/chart: {{ template "kyverno-policies.chart" . }}
   {{- end -}}
 {{- end -}}
 {{ $version }}
+{{- else -}}
+{{ .Values.kyvernoVersion }}
+{{- end -}}
 {{- end -}}
 
 {{/* Fail if deployed Kyverno does not match */}}

charts/kyverno-policies/values.yaml

@@ -92,3 +92,7 @@ customLabels: {}
 
 # -- Policies background mode
 background: true
+
+# -- Kyverno version
+# The default of "autodetect" will try to determine the currently installed version from the deployment
+kyvernoVersion: autodetect