fluentbit configmap for rewrite_tag

fluentbit_configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: fluent-bit-config
  labels:
    k8s-app: fluent-bit
data:
  # Configuration files: server, input, filters and output
  # ======================================================
  fluent-bit.conf: |
    [SERVICE]
        Flush         1
        Log_Level     info
        Daemon        off
        Parsers_File  parsers.conf
        HTTP_Server   On
        HTTP_Listen   0.0.0.0
        HTTP_Port     2020
    @INCLUDE input-myapp.conf
    @INCLUDE es-output.conf
  input-myapp.conf: |
    [INPUT]
        Name              tail
        Tag               myapp.*
        Path              /var/log/containers/*myapp*.log
        DB                /var/log/myapp_flb_kube.db
        Buffer_Chunk_Size 5MB
        Buffer_Max_Size   5MB
        Mem_Buf_Limit     25MB
        Skip_Long_Lines   On
        Refresh_Interval  10
  filter-kubernetes.conf: |
    [FILTER]
        Name                kubernetes
        Match               myapp.web.*
        Kube_URL            https://kubernetes.default.svc:443
        Kube_CA_File        /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        Kube_Token_File     /var/run/secrets/kubernetes.io/serviceaccount/token
        Merge_Log           On
        Merge_Log_Key       log_processed
        K8S-Logging.Exclude On
        Labels              On
        Annotations         On
        K8S-Logging.Parser  Off
        Regex_Parser        myapp-k8s-custom-tag
    [FILTER]
        Name                kubernetes
        Match               myapp.app.*
        Kube_URL            https://kubernetes.default.svc:443
        Kube_CA_File        /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        Kube_Token_File     /var/run/secrets/kubernetes.io/serviceaccount/token
        Kube_Tag_Prefix     myapp.var.log.containers.
        Merge_Log           On
        Merge_Log_Key       log_processed
        K8S-Logging.Exclude On
        Labels              On
        Annotations         On
        K8S-Logging.Parser  Off
        Regex_Parser        myapp-k8s-custom-tag
  parsers.conf: |
    [PARSER]
        Name    myapp-k8s-custom-tag
        Format  regex
        Regex   (?<tag>[^.]+)?\.?(?<pod_name>[a-z0-9](?:[-a-z0-9]*[a-z0-9])?(?:\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*)_(?<namespace_name>[^_]+)_(?<container_name>.+)-(?<docker_id>[a-z0-9]{64})\.log$
es-output.conf: |
    [OUTPUT]
        Name            es
        Match           myapp.app.*
        Host            localhost
        Port            9200
        Logstash_Format On
        Logstash_Prefix myapp-app-logs
        Retry_Limit     15
    [OUTPUT]
        Name            es
        Match           myapp.web.*
        Host            localhost
        Port            9200
        Logstash_Format On
        Logstash_Prefix myapp-web-logs
        Retry_Limit     15