Support structured logging config for faas-netes (Pro/Enterprise)

Support configuration for debug level logging and JSON logging for the
faas-netes controller (Pro/Enterprise).

Signed-off-by: Han Verstraete (OpenFaaS Ltd) <han@openfaas.com>

Author: welteki

chart/openfaas/README.md

@@ -490,6 +490,8 @@ yaml) |
 | `faasnetes.resources` | Resource limits and requests for faas-netes container | See [values.yaml](./values.yaml) |
 | `faasnetes.writeTimeout` | Write timeout for the faas-netes API | `""` (defaults to gateway.writeTimeout) |
 | `faasnetesPro.image` | Container image used for faas-netes when `openfaasPro=true` | See [values.yaml](./values.yaml) |
+| `faasnetesPro.logs.format` | Set the log format, supports `console` or `json` | `console` |
+| `faasnetesPro.logs.debug` | Print debug logs | `false` |
 | `operator.create` | Use the OpenFaaS operator CRD controller, default uses faas-netes as the Kubernetes controller | `false` |
 | `operator.image` | Container image used for the openfaas-operator | See [values.yaml](./values.yaml) |
 | `operator.resources` | Resource limits and requests for openfaas-operator containers | See [values.yaml](./values.yaml) |

chart/openfaas/templates/gateway-dep.yaml

@@ -434,6 +434,12 @@ spec:
         - name: auditing_http_verbs
           value: "{{ .Values.eventSubscription.auditing.httpVerbs }}"
         {{- end}}
+        {{- if .Values.faasnetesPro.logs}}
+        - name: "debug"
+          value: "{{ .Values.faasnetesPro.logs.debug }}"
+        - name: "log_encoding"
+          value: "{{ .Values.faasnetesPro.logs.format }}"
+        {{- end }}
         volumeMounts:
         {{- if .Values.iam.enabled }}
         - name: issuer-key

chart/openfaas/values.yaml

@@ -172,6 +172,9 @@ operator:
 
 faasnetesPro:
   image: ghcr.io/openfaasltd/faas-netes:0.5.14
+  logs:
+    debug: false
+    format: "console"
 
 # For the Community Edition
 faasnetes: