添加 Fluentd 作为接收器

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata:
  name: fluentd-config
  namespace: default
data:
  fluent.conf: |-
    # Receive logs sent from Fluent Bit on port 24224
    <source>
      @type forward
      port 24224
    </source>

    # Because this will send logs Fluentd received to stdout,
    # to avoid Fluent Bit and Fluentd loop logs collection,
    # add a filter here to avoid sending logs from the default namespace to stdout again
    <filter **>
      @type grep
      <exclude>
        key $.kubernetes.namespace_name
        pattern /^default$/
      </exclude>
    </filter>

    # Send received logs to stdout for demo/test purpose only
    # Various output plugins are supported to output logs to S3, MongoDB, Cassandra, MySQL, syslog, Splunk, etc.
    <match **>
      @type stdout
    </match>
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: fluentd
  name: fluentd
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: fluentd
  template:
    metadata:
      labels:
        app: fluentd
    spec:
      containers:
      - image: fluentd:v1.9.1-1.0
        imagePullPolicy: IfNotPresent
        name: fluentd
        ports:
        - containerPort: 24224
          name: forward
          protocol: TCP
        - containerPort: 5140
          name: syslog
          protocol: TCP
        volumeMounts:
        - mountPath: /fluentd/etc
          name: config
          readOnly: true
      volumes:
      - configMap:
          defaultMode: 420
          name: fluentd-config
        name: config
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: fluentd
  name: fluentd
  namespace: default
spec:
  ports:
  - name: forward
    port: 24224
    protocol: TCP
    targetPort: forward
  selector:
    app: fluentd
  sessionAffinity: None
  type: ClusterIP
EOF