[stable/traefik] Added ability to log itself logs in json format (#7849)

* Added ability to log itself logs in json format

Signed-off-by: Oleksandr Stepanov <alexandrst88@gmail.com>

* Bumped chart version

Signed-off-by: Oleksandr Stepanov <alexandrst88@gmail.com>

stable/traefik/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: traefik
-version: 1.48.0
+version: 1.49.0
 appVersion: 1.7.2
 description: A Traefik based Kubernetes ingress controller with Let's Encrypt support
 keywords:

stable/traefik/templates/configmap.yaml

@@ -15,6 +15,10 @@ data:
     {{- else }}
     logLevel = "INFO"
     {{- end }}
+    {{- if .Values.traefikLogFormat }}
+    [traefikLog]
+      format = "{{ .Values.traefikLogFormat }}"
+    {{- end }}
     {{- if .Values.sendAnonymousUsage }}
     sendAnonymousUsage = true
     {{- end }}

stable/traefik/values.yaml

@@ -285,6 +285,7 @@ service:
   #   https: 30443
 gzip:
   enabled: true
+traefikLogFormat: json
 accessLogs:
   enabled: false
   ## Path to the access logs file. If not provided, Traefik defaults it to stdout.