Demo fixes (#10)

* Demo updates
* Add clone of fluent-bit chart with hostname change
  We need hostname in the daemonset tempalte, so we have
  to clone the entire fluent-bit helm chart to add one line.

Signed-off-by: Alexandre Peixoto Ferreira <[email protected]>
Signed-off-by: Eric Van Hensbergen <[email protected]>
Co-authored-by: Eric Van Hensbergen <[email protected]>

Author: alexandref75

charts/demo/Chart.yaml

@@ -29,22 +29,22 @@ kubeVersion: ">=1.18.0-0"
 dependencies:
   - name: fluent-bit
     version: 0.20.9
-    repository: https://fluent.github.io/helm-charts
-    alias: fluent-bit
+    repository: file://../smarter-fluent-bit
+    alias: smarter-fluent-bit
   - name: smarter-gstreamer
-    version: 0.0.2
+    version: 0.0.4
     repository: https://smarter-project.github.io/gstreamer
   - name: smarter-pulseaudio
-    version: 0.0.2
+    version: 0.0.3
     repository: https://smarter-project.github.io/pulseaudio
   - name: smarter-image-detector
-    version: 0.0.2
+    version: 0.0.4
     repository: https://smarter-project.github.io/image-detector
   - name: smarter-audio-client
-    version: 0.0.2
+    version: 0.0.4
     repository: https://smarter-project.github.io/audio-client
   - name: smarter-inference
-    version: 0.0.2
+    version: 0.0.4
     repository: https://smarter-project.github.io/smarter-inference
 icon: https://gitlab.com/uploads/-/system/group/avatar/59012546/ARM1636_Project_Logo_ST2_RGB_V1.png
 sources:

charts/demo/values.yaml

@@ -5,7 +5,7 @@
 global:
   domain: example.com
 
-fluent-bit:
+smarter-fluent-bit:
   fluentd:
     host: fluentbit
     port: 30224

charts/smarter-edge/Chart.yaml

@@ -29,10 +29,10 @@ kubeVersion: ">=1.18.0-0"
 
 dependencies:
   - name: smarter-cni
-    version: 0.0.2
+    version: 0.0.3
     repository: https://smarter-project.github.io/smarter-cni
   - name: smarter-dns
-    version: 0.0.2
+    version: 0.0.4
     repository: https://smarter-project.github.io/smarter-dns
   - name: smarter-device-manager
     version: 0.0.7

charts/smarter-fluent-bit/Chart.yaml

@@ -0,0 +1,31 @@
+annotations:
+  artifacthub.io/changes: |
+    - kind: changed
+      description: "Extended with hostname in daemonset"
+apiVersion: v2
+name: smarter-fluent-bit
+appVersion: 1.9.9
+description: Fast and lightweight log processor and forwarder or Linux, OSX and BSD
+  family operating systems.
+home: https://fluentbit.io/
+icon: https://fluentbit.io/assets/img/logo1-default.png
+keywords:
+- logging
+- fluent-bit
+- fluentd
+maintainers:
+- email: [email protected]
+  name: edsiper
+- email: [email protected]
+  name: naseemkullah
+- email: [email protected]
+  name: Towmeykaw
+- email: [email protected]
+  name: stevehipwell
+name: fluent-bit
+sources:
+- https://github.com/fluent/fluent-bit/
+version: 0.20.9
+artifacthub.io/signKey: |
+  fingerprint: 71EDA4E3D652DC73EB09E3A5387D298C169CF24E
+  url: https://smarter-project.github.io/documentation/pgp_keys.asc

charts/smarter-fluent-bit/README.md

@@ -0,0 +1,57 @@
+# Fluent Bit Helm chart
+
+[Fluent Bit](https://fluentbit.io) is a fast and lightweight log processor and forwarder or Linux, OSX and BSD family operating systems.
+
+## Installation
+
+To add the `fluent` helm repo, run:
+
+```sh
+helm repo add fluent https://fluent.github.io/helm-charts
+```
+
+To install a release named `fluent-bit`, run:
+
+```sh
+helm install fluent-bit fluent/fluent-bit
+```
+
+## Chart values
+
+```sh
+helm show values fluent/fluent-bit
+```
+
+## Using Lua scripts
+Fluent Bit allows us to build filter to modify the incoming records using custom [Lua scripts.](https://docs.fluentbit.io/manual/pipeline/filters/lua)
+
+### How to use Lua scripts with this Chart
+
+First, you should add your Lua scripts to `luaScripts` in values.yaml, for example:
+
+```yaml
+luaScripts:
+ filter_example.lua: |
+    function filter_name(tag, timestamp, record)
+        -- put your lua code here.
+    end
+```
+
+After that, the Lua scripts will be ready to be used as filters. So next step is to add your Fluent bit [filter](https://docs.fluentbit.io/manual/concepts/data-pipeline/filter) to `config.filters` in values.yaml, for example:
+
+```yaml
+config:
+  filters: |
+    [FILTER]
+        Name    lua
+        Match   <your-tag>
+        script  /fluent-bit/scripts/filter_example.lua
+        call    filter_name
+```
+Under the hood, the chart will:
+- Create a configmap using `luaScripts`.
+- Add a volumeMounts for each Lua scripts using the path `/fluent-bit/scripts/<script>`.
+- Add the Lua script's configmap as volume to the pod.
+
+### Note
+Remember to set the `script` attribute in the filter using `/fluent-bit/scripts/`, otherwise the file will not be found by fluent bit.

charts/smarter-fluent-bit/ci/ci-values.yaml

@@ -0,0 +1 @@
+logLevel: debug