log-contanier-file-fluentbit.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: fluentbit-config
data:
  fluent-bit.conf: |
    [SERVICE]
        Flush 5
        Daemon off
        Log_Level error
        Log_File /fluent-bit/log/fluent-bit.log

    [INPUT]
        Name tail
        Path /log/*
        Refresh_Interval 10
        DB /fluent-bit/fluent-bit.db
        
    [FILTER]
        Name modify
        Match *
        Add_if_not_present k8s-app log-contanier-file-fluentbit
        
    [OUTPUT]
        Name es
        Match *
        Host elasticsearch-logging.logging
        Port 9200
        Logstash_Format On
        Logstash_Prefix fluentbit-k8s
        Logstash_DateFormat %Y.%m.%d

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: log-contanier-file-fluentbit
  labels:
    k8s-app: log-contanier-file-fluentbit
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: log-contanier-file-fluentbit
  template:
    metadata:
      labels:
        k8s-app: log-contanier-file-fluentbit
    spec:
      terminationGracePeriodSeconds: 30
      containers:
      - name: log-contanier-file-fluentbit
        image: alpine:latest
        command:
        - sh
        - -c
        - 'count=1;while true;do echo log to file $count>>/data/logs/log-contanier-file-fluentbit.log;sleep 1;count=$(($count+1));done'
        volumeMounts:
        - name: app-logs
          mountPath: /data/logs
      - name: fluentbit-logging
        image: fluent/fluent-bit:0.13
        volumeMounts:
        - name: app-logs
          mountPath: /log
        - name: fluentbit-config
          mountPath: /fluent-bit/etc/
      volumes:
      - name: app-logs
        emptyDir: {}
      - name: fluentbit-config
        configMap:
          name: fluentbit-config