WIP; chart update

charts/flyimg/Chart.yaml

@@ -15,9 +15,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.2.0
+version: 0.2.1
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
-appVersion: 1.4.9
+appVersion: 1.4.12

charts/flyimg/templates/configmap.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: flyimg-override-config
+data:
+  override-parameters.yml: |
+    {{- .Values.parameters | toYaml | nindent 4 }}

charts/flyimg/templates/deployment.yaml

@@ -27,6 +27,28 @@ spec:
       serviceAccountName: {{ include "flyimg.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      initContainers:
+      - name: copy-original-config
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+        command: ["/bin/sh", "-c"]
+        args:
+        - |
+          cp /var/www/html/config/parameters.yml /config/parameters.yml
+        volumeMounts:
+        - name: shared-config
+          mountPath: /config
+      - name: update-config
+        image: mikefarah/yq:4
+        command: ["/bin/sh", "-c"]
+        args:
+        - |
+          yq eval-all 'select(fileIndex == 0) * select(fileIndex == 1)' /config/parameters.yml /override/override-parameters.yml > /config/merged-parameters.yml
+          mv /config/merged-parameters.yml /config/parameters.yml
+        volumeMounts:
+        - name: shared-config
+          mountPath: /config
+        - name: override-config
+          mountPath: /override
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
@@ -45,8 +67,19 @@ spec:
             httpGet:
               path: /
               port: http
+          volumeMounts:
+          - name: shared-config
+            mountPath: /var/www/html/config
           resources:
-            {{- toYaml .Values.resources | nindent 12 }}
+            {{- toYaml .Values.resources | nindent 12 }}     
+      volumes:
+      - name: shared-config
+        emptyDir: {}
+      - name: override-config
+        configMap:
+          name: flyimg-override-config
+        # optional: true
+
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

charts/flyimg/values.yaml

@@ -77,3 +77,6 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+# configuration values for Flyimg application
+parameters: