Fetch the pod's HOSTNAME via downward API and pass it as env.var

... when the pod is deployed as part of an StatefulSet, so it can determine its identity on startup and pick the right config file from the '*-configfiles' mount.
cs3org · May 11, 2021 · cecc3a9 · cecc3a9
1 parent 52cedcf
commit cecc3a9
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/revad/templates/deployment.yaml b/revad/templates/deployment.yaml
@@ -35,7 +35,7 @@ spec:
           args:
               - "-c"
               {{- if .Values.useStatefulSet }}
-              - "/etc/revad/${HOSTNAME}.toml"
+              - "/etc/revad/$(HOSTNAME).toml"
               {{- else }}
               - "/etc/revad/revad.toml"
               {{- end }}
@@ -50,8 +50,14 @@ spec:
             {{- if .Values.extraVolumeMounts }}
               {{ toYaml .Values.extraVolumeMounts | nindent 12 }}
             {{- end }}
-          {{- if or .Values.env .Values.extraEnv }}
+          {{- if or .Values.useStatefulSet (or .Values.env .Values.extraEnv) }}
           env:
+            {{- if .Values.useStatefulSet }}
+            - name: HOSTNAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+            {{- end }}
           {{- range $name, $value := .Values.env }}
             - name: "{{ $name }}"
               value: "{{ $value }}"
@@ -63,7 +69,6 @@ spec:
           {{- if .Values.envFrom }}
           envFrom:
             {{ toYaml .Values.envFrom | indent 12 }}
-          {{- end }}
       volumes:
         - name: {{ include "revad.fullname" . }}-configfiles
           configMap:
@@ -84,7 +89,7 @@ spec:
         accessModes:
           {{- toYaml .Values.persistentVolume.accessModes | indent 10 }}
         resources:
-          requests: 
+          requests:
             storage: "{{ .Values.persistentVolume.size }}"
           {{- if (eq "-" .Values.persistentVolume.storageClass) }}
             storageClassName: ""