Coralogix Fluent Bit Helm chart migration to the official Fluent Bit Helm chart

# This file replaces the need for the custom Coralogix chart by using the official chart with overrides
# Image configuration - using official Fluent Bit same version as Coralogix 
Image:
  repository: fluent/fluent-bit
  tag: "3.2.10"
  pullPolicy: IfNotPresent

# Command and args configuration 
command:
  - /fluent-bit/bin/fluent-bit

args:
  - --workdir=/fluent-bit/etc
  - --config=/fluent-bit/etc/conf/fluent-bit.conf

# Resource configuration 
resources:
  limits:
    cpu: 100m
    memory: 250Mi
  requests:
    cpu: 100m
    memory: 250Mi

# Node
tolerations:
  - operator: Exists

# Network configuration 
hostNetwork: true
dnsPolicy: ClusterFirstWithHostNet

# RBAC configuration
rbac:
  nodeAccess: true

# Service monitor configuration
serviceMonitor:
  enabled: false
  additionalEndpoints:
    - port: storage-metrics
      path: /metrics

# Extra ports for metrics
extraPorts:
  - port: 2021
    containerPort: 2021
    protocol: TCP
    name: storage-metrics

# Environment variables 
env:
  - name: APP_NAME_SYSTEMD
    value: systemd
  - name: SUB_SYSTEM_SYSTEMD
    value: kubelet
  - name: HOSTNAME
    valueFrom:
      fieldRef:
        apiVersion: v1
        fieldPath: metadata.name

# Environment variables from secrets
envFrom:
  - secretRef:
      name: coralogix-keys

# Template-based environment variables 
envWithTpl:
  - name: ENDPOINT
    value: "{{ .Values.endpoint }}"
  - name: LOG_LEVEL
    value: "{{ .Values.logLevel }}"

# Fluent Bit configuration 
config:
  service: |
    [SERVICE]
        Daemon Off
        Flush 1
        Log_Level {{ .Values.logLevel }}
        Parsers_File /fluent-bit/etc/parsers.conf
        Parsers_File /fluent-bit/etc/conf/custom_parsers.conf
        HTTP_Server On
        HTTP_Listen 0.0.0.0
        HTTP_Port 2020
        Health_Check On

  inputs: |
    [INPUT]
        Name fluentbit_metrics
        Tag metrics
        Scrape_Interval 5
        Scrape_On_Start On

    [INPUT]
        Name tail
        Tag kube.*
        Path /var/log/containers/*.log
        multiline.parser docker, cri
        Refresh_Interval 5
        Skip_Long_Lines On
        Mem_Buf_Limit 25MB
        DB /var/log/fluentbit-tail.db

    [INPUT]
        Name systemd
        Tag host.*
        Systemd_Filter _SYSTEMD_UNIT=kubelet.service
        Read_From_Tail On
        Mem_Buf_Limit 5MB

  filters: |
    [FILTER]
        Name kubernetes
        Match kube.*
        K8S-Logging.Parser On
        K8S-Logging.Exclude On
        Use_Kubelet On
        Annotations Off
        Labels On
        Buffer_Size 100MB
        Keep_Log Off
        Merge_Log_Key log_obj
        Merge_Log On
        tls.verify Off

    [FILTER]
        Name nest
        Match kube.*
        Operation nest
        Wildcard *
        Nest_Under json

    [FILTER]
        Name lua
        Match kube.*
        Script /fluent-bit/scripts/script.lua
        Call addcrxmetadata
        time_as_table true

    [FILTER]
        Name modify
        Match host.*
        Add applicationName systemd
        Copy kubelet subsystemName

    [FILTER]
        Name nest
        Match host.*
        Operation nest
        Wildcard _HOSTNAME
        Wildcard SYSLOG_IDENTIFIER
        Wildcard _CMDLINE
        Wildcard MESSAGE
        Nest_Under json

  outputs: |
    [OUTPUT]
        Name prometheus_exporter
        Match metrics
        Host 0.0.0.0
        Port 2021

    [OUTPUT]
        Name http
        Match_regex ^(kube\..*|host\..*)$
        Host {{ .Values.endpoint }}
        Port 443
        URI /logs/v1/singles
        Format json_lines
        tls On
        Header Authorization Bearer ${PRIVATE_KEY}
        Compress gzip
        Retry_Limit False
        net.keepalive Off

# Extra volumes for Lua script
extraVolumes:
  - name: crxluascript
    configMap:
      name: fluent-bit-http-crxluascript

# Extra volume mounts
extraVolumeMounts:
  - name: crxluascript
    mountPath: /fluent-bit/scripts/script.lua
    subPath: script.lua

# PrometheusRule configuration (commented out by default)
# prometheusRule:
#   enabled: true
#   rules:
#   - alert: FluentbitNoOutputBytesProcessed
#     expr: rate(fluentbit_output_proc_bytes_total[5m]) == 0
#     annotations:
#       description: |
#         "FluentBit instance {{$labels.instance}}'s output plugin {{$labels.name}} has not processed any
#         bytes for at least 15 minutes."
#       summary: No Output Bytes Processed
#     for: 2m
#     labels:
#       severity: critical
#   - alert: FluentbitErrorRateIncreased
#     expr: sum(rate(fluentbit_output_retries_failed_total[5m])) > 0
#     annotations:
#       description: |
#         "FluentBit experiencing connectivity issues with Coralogix, issue may cause missing data for Coralogix"
#       summary: Retries failed#     for: 2m#     labels:#       severity: critical#   - alert: FluentbitNoInput
#     expr: sum by (pod) (rate(fluentbit_input_bytes_total[5m])) == 0
#     annotations:
#       description: |
#         "FluentBit is having 0 data incoming, restart the pod  {{$labels.pod}}"
#       summary: FluentBit no input coming
#     for: 2m
#     labels:
#       severity: warning

# Default configuration values 
endpoint: ingress.eu1.coralogix.com
logLevel: error

# Dynamic metadata configuration (extract from log fields) 
dynamic_metadata:
  app_name: kubernetes.namespace_name
  sub_system: kubernetes.container_name

# Static metadata configuration (hardcoded values)
static_metadata:
  app_name: ""
  sub_system: ""