K8s 搭建 FileBeat+ELK 分布式日志收集系统 以及 KQL 语法介绍

apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
  namespace: kube-system
data:
  filebeat.yml: |-
    filebeat.inputs:
    - type: container
      paths:
        - /var/log/containers/*.log
    processors:
      - add_kubernetes_metadata:
          in_cluster: true
      - drop_fields:
          fields: ["beat.name", "beat.version", "host.hostname", "host.architecture"]
    output.elasticsearch:
      hosts: ["${ELASTICSEARCH_HOST:elasticsearch}:${ELASTICSEARCH_PORT:9200}"]

---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: filebeat
  namespace: kube-system
  labels:
    k8s-app: filebeat
spec:
  selector:
    matchLabels:
      k8s-app: filebeat
  template:
    metadata:
      labels:
        k8s-app: filebeat
    spec:
      serviceAccountName: filebeat
      terminationGracePeriodSeconds: 30
      containers:
      - name: filebeat
        image: docker.elastic.co/beats/filebeat:7.10.0
        args: [
          "-c", "/etc/filebeat.yml",
          "-e",
        ]
        env:
        - name: ELASTICSEARCH_HOST
          value: "elasticsearch-logging"
        - name: ELASTICSEARCH_PORT
          value: "9200"
        securityContext:
          runAsUser: 0
        volumeMounts:
        - name: config
          mountPath: /etc/filebeat.yml
          subPath: filebeat.yml
        - name: data
          mountPath: /usr/share/filebeat/data
        - name: varlibdockercontainers
          mountPath: /var/lib/docker/containers
          readOnly: true
        - name: varlog
          mountPath: /var/log
          readOnly: true
        - name: dockersock
          mountPath: /var/run/docker.sock
      volumes:
      - name: config
        configMap:
          name: filebeat-config
      - name: data
        hostPath:
          path: /var/lib/filebeat-data
          type: DirectoryOrCreate
      - name: varlibdockercontainers
        hostPath:
          path: /var/lib/docker/containers
      - name: varlog
        hostPath:
          path: /var/log
      - name: dockersock
        hostPath:
          path: /var/run/docker.sock
 
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: filebeat
rules:
- apiGroups:
  - ""
  resources:
  - nodes
  - pods
  - services
  verbs:
  - get
  - watch
  - list
 
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: filebeat