helm: Add experimentalEnv settings

Enable setting arbitrary environment variables on all Go-based Control Plane containers For example, via CLI: ``` --set destinationController.experimentalEnv[0].name=ENV_VAR,destinationController.experimentalEnv[0].value=ENV_VAL ``` Via values file: ``` destinationController: experimentalEnv: - name: DEST_ENV_VAR value: DEST_ENV_VAL - name: DEST_CONFIG_MAP_VAR valueFrom: configMapKeyRef: key: dest_config_map_key name: dest-config-map-name heartbeat: experimentalEnv: identity: experimentalEnv: proxyInjector: experimentalEnv: spValidator: experimentalEnv: serviceMirrorExperimentalEnv: ``` Relates to #11862 and #11874 Signed-off-by: Andrew Seigner <[email protected]>
linkerd · Jan 10, 2024 · e69f845 · e69f845
1 parent 5e32446
commit e69f845
Show file tree

Hide file tree

Showing 5 changed files with 22 additions and 0 deletions.
diff --git a/charts/linkerd-control-plane/templates/destination.yaml b/charts/linkerd-control-plane/templates/destination.yaml
@@ -208,6 +208,10 @@ spec:
         {{- range (.Values.destinationController).experimentalArgs }}
         - {{ . }}
         {{- end }}
+        {{- with (.Values.destinationController).experimentalEnv }}
+        env:
+        {{- toYaml . | nindent 8 -}}
+        {{- end }}
         {{- include "partials.linkerd.trace" . | nindent 8 -}}
         image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion | default .Values.linkerdVersion}}
         imagePullPolicy: {{.Values.imagePullPolicy}}
@@ -245,6 +249,10 @@ spec:
         - -log-level={{.Values.controllerLogLevel}}
         - -log-format={{.Values.controllerLogFormat}}
         - -enable-pprof={{.Values.enablePprof | default false}}
+        {{- with (.Values.spValidator).experimentalEnv }}
+        env:
+        {{- toYaml . | nindent 8 -}}
+        {{- end }}
         image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion | default .Values.linkerdVersion}}
         imagePullPolicy: {{.Values.imagePullPolicy}}
         livenessProbe:

diff --git a/charts/linkerd-control-plane/templates/heartbeat.yaml b/charts/linkerd-control-plane/templates/heartbeat.yaml
@@ -59,6 +59,9 @@ spec:
             env:
             - name: LINKERD_DISABLED
               value: "the heartbeat controller does not use the proxy"
+            {{- with (.Values.heartbeat).experimentalEnv }}
+            {{- toYaml . | nindent 12 -}}
+            {{- end }}
             args:
             - "heartbeat"
             - "-controller-namespace={{.Release.Namespace}}"

diff --git a/charts/linkerd-control-plane/templates/identity.yaml b/charts/linkerd-control-plane/templates/identity.yaml
@@ -165,6 +165,9 @@ spec:
         env:
         - name: LINKERD_DISABLED
           value: "linkerd-await cannot block the identity controller"
+        {{- with (.Values.identity).experimentalEnv }}
+        {{- toYaml . | nindent 8 -}}
+        {{- end }}
         image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion | default .Values.linkerdVersion}}
         imagePullPolicy: {{.Values.imagePullPolicy}}
         livenessProbe:

diff --git a/charts/linkerd-control-plane/templates/proxy-injector.yaml b/charts/linkerd-control-plane/templates/proxy-injector.yaml
@@ -79,6 +79,10 @@ spec:
         - -log-format={{.Values.controllerLogFormat}}
         - -linkerd-namespace={{.Release.Namespace}}
         - -enable-pprof={{.Values.enablePprof | default false}}
+        {{- with (.Values.proxyInjector).experimentalEnv }}
+        env:
+        {{- toYaml . | nindent 8 -}}
+        {{- end }}
         image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion | default .Values.linkerdVersion}}
         imagePullPolicy: {{.Values.imagePullPolicy}}
         livenessProbe:

diff --git a/multicluster/charts/linkerd-multicluster-link/templates/service-mirror.yaml b/multicluster/charts/linkerd-multicluster-link/templates/service-mirror.yaml
@@ -139,6 +139,10 @@ spec:
         {{- end }}
         - -enable-pprof={{.Values.enablePprof | default false}}
         - {{.Values.targetClusterName}}
+        {{- with .Values.serviceMirrorExperimentalEnv }}
+        env:
+        {{- toYaml . | nindent 8 -}}
+        {{- end }}
         image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion}}
         name: service-mirror
         securityContext: