logging: add fluent-bit

apps/system/logging/requirements.yaml

@@ -8,3 +8,6 @@ dependencies:
 - name: elasticsearch
   version: '7.4.1'
   repository: https://helm.elastic.co
+- name: fluent-bit
+  version: '2.8.2'
+  repository: '@stable'

apps/system/logging/values.yaml

@@ -19,6 +19,25 @@ elasticsearch:
   volumeClaimTemplate:
     volumeName: elasticsearch
 
+fluent-bit:
+  nameOverride: fluent-bit
+  fullnameOverride: fluent-bit
+  input:
+    systemd:
+      enabled: true
+  backend:
+    # no support for gelf in chart, configure manually
+    type: none
+  extraEntries:
+    output: |
+      [OUTPUT]
+        Name          gelf
+        Match         *
+        Host          graylog-tcp 
+        Port          12201
+        Mode          tcp
+        Gelf_Short_Message_Key log
+
 graylog:
   nameOverride: graylog
   fullnameOverride: graylog
@@ -50,6 +69,13 @@ graylog:
       - hosts:
         - graylog.gorilych.ru
         secretName: graylog-tls
+    input:
+      tcp:
+        service:
+          type: ClusterIP
+        ports:
+        - name: gelf
+          port: 12201
     mongodb:
       uri: mongodb://mongodb:27017/graylog
     elasticsearch: