viking-test-app charts supports self-sharding config.

charts/viking-test-app/templates/varnishconfig.yaml

-{{ if or .Values.acls .Values.vcl -}}
+{{ if coalesce .Values.acls .Values.vcl (hasKey .Values "selfSharding") -}}
 {{ if empty .Values.vikingAdmSvc -}}
   {{ fail "Viking admin Service must be specified" -}}
 {{ end -}}
@@ -22,4 +22,8 @@ spec:
   vcl: |
     {{ .Values.vcl | nindent 4 }}
   {{- end }}
+  {{- if hasKey .Values "selfSharding" }}
+  self-sharding:
+    {{ toYaml .Values.selfSharding | nindent 4 }}
+  {{- end }}
 {{- end }}

charts/viking-test-app/values.yaml

@@ -43,3 +43,7 @@ acls: []
 
 # If non-empty, include as-is as custom VCL.
 vcl: ""
+
+## Configuration for a sharded cache, specify the empty object for default
+## config.
+# selfSharding: {}