Add Fluent Bit chart.

stable/fluent-bit/Chart.yaml

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+name: fluent-bit
+version: 0.11.2
+description: Fluent Bit
+keywords:
+- fluent
+- bit
+sources:
+- http://fluentbit.io
+maintainers:
+- name: Eduardo Silva
+  email: eduardo@treasure-data.com
+- name: Kevin Fox
+  email: Kevin.Fox@pnnl.gov

stable/fluent-bit/README.md

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+# fluent-bit Chart
+
+[Fluent Bit](http://fluentbit.io/) is an open source and multi-platform Log Forwarder.
+
+## Chart Details
+This chart will do the following:
+
+* Install a configmap for fluent bit
+* Install a daemonset that provisions the fluent bit [per-host architecture]
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```bash
+$ helm install --name my-release stable/fluent-bit
+```
+
+## Configuration
+
+Configurable values are documented in the `values.yaml`.
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`.
+
+Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,
+
+```bash
+$ helm install --name my-release -f values.yaml stable/fluent-bit
+```
+
+> **Tip**: You can use the default [values.yaml](values.yaml)

stable/fluent-bit/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "fullname" -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 -}}
+{{- end -}}

stable/fluent-bit/templates/config.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "fullname" . }}-config
+  labels:
+    app: {{ template "fullname" . }}
+  namespace: {{ .Values.namespace }}
+data:
+  fluent-bit.conf: |-
+    [SERVICE]
+        Flush        1
+        Daemon       Off
+        Log_Level    info
+        Parsers_File parsers.conf
+
+    [INPUT]
+        Name          tail
+        Path          /var/log/containers/*.log
+        Parser        docker
+        Tag           kube.*
+        Refresh_Interval 5
+        Mem_Buf_Limit 5MB
+
+    [FILTER]
+        Name   kubernetes
+        Match  kube.*
+
+{{ if eq .Values.backend.type "test" }}
+    [OUTPUT]
+        Name  file
+        Match *
+        Path /tmp/fluent-bit.log
+{{ else if eq .Values.backend.type "forward" }}
+    [OUTPUT]
+        Name          forward
+        Match         *
+        Host          {{ .Values.backend.forward.host }}
+        Port          {{ .Values.backend.forward.port }}
+        Retry_Limit False
+{{ else if eq .Values.backend.type "es" }}
+    [OUTPUT]
+        Name  es
+        Match *
+        Host  ${FLUENT_ELASTICSEARCH_HOST}
+        Port  ${FLUENT_ELASTICSEARCH_PORT}
+        Logstash_Format On
+        Retry_Limit False
+{{- end }}

stable/fluent-bit/templates/daemonset.yaml

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+apiVersion: extensions/v1beta1
+kind: DaemonSet
+metadata:
+  name: fluent-bit
+  namespace: {{ .Values.namespace }}
+  labels:
+    app: {{ template "fullname" . }}
+spec:
+  template:
+    metadata:
+      labels:
+        app: {{ template "fullname" . }}
+    spec:
+      containers:
+      - name: fluent-bit
+        image: "{{ .Values.image.fluent_bit.repository }}:{{ .Values.image.fluent_bit.tag }}"
+        env:
+{{ toYaml .Values.env | indent 10 }}
+        resources:
+{{ toYaml .Values.resources | indent 10 }}
+        volumeMounts:
+        - name: varlog
+          mountPath: /var/log
+        - name: varlibdockercontainers
+          mountPath: /var/lib/docker/containers
+          readOnly: true
+        - name: config
+          mountPath: /fluent-bit/etc/fluent-bit.conf
+          subPath: fluent-bit.conf
+{{ if .Values.on_minikube }}
+        - name: mnt
+          mountPath: /mnt
+          readOnly: true
+{{ end }}
+      terminationGracePeriodSeconds: 10
+      volumes:
+      - name: varlog
+        hostPath:
+          path: /var/log
+      - name: varlibdockercontainers
+        hostPath:
+          path: /var/lib/docker/containers
+      - name: config
+        configMap:
+          name: {{ template "fullname" . }}-config
+{{ if .Values.on_minikube }}
+      - name: mnt
+        hostPath:
+          path: /mnt
+{{ end }}

stable/fluent-bit/values.yaml

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+# Minikube stores its logs in a seperate directory.
+# enable if started in minikube.
+on_minikube: false
+
+namespace: kube-system
+
+image:
+  fluent_bit:
+    repository: fluent/fluent-bit
+    tag: 0.11.2
+  pullPolicy: IfNotPresent
+
+backend:
+  type: forward
+  forward:
+    host: fluentd
+    port: 24284
+
+env:
+  - name:  FLUENT_ELASTICSEARCH_HOST
+    value: elasticsearch-logger
+  - name:  FLUENT_ELASTICSEARCH_PORT
+    value: "9200"
+
+resources:
+  limits:
+    memory: 100Mi
+  requests:
+    cpu: 100m
+    memory: 100Mi