k8s日志收集方案

节点系统日志

 节点应用日志

节点Pod日志 

          通过边车容器机制共享Pod卷采集主容器的日志

apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat-demo
  namespace: default
spec:
  replicas: 2
  selector:
    matchLabels:
      project: www
      app: tomcat-demo
  template:
    metadata:
      labels:
        project: www
        app: tomcat-demo
    spec:
      nodeName: k8s-worker1
      containers:
      - name: tomcat
        image: tomcat:latest
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 8080
          name: web
          protocol: TCP
        resources:
          requests:
            cpu: 0.5
            memory: 1Gi
          limits:
            cpu: 1
            memory: 2Gi
        livenessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 60
          timeoutSeconds: 20
        readinessProbe:
          httpGet:
            path: /
            port: 8080
          initialDelaySeconds: 60
          timeoutSeconds: 20
        volumeMounts:
        - name: tomcat-logs
          mountPath: /usr/local/tomcat/logs
        - name: tomcatwebroot
          mountPath: /usr/local/tomcat/webapps/ROOT

      - name: filebeat
        image: docker.io/elastic/filebeat:7.17.2
        imagePullPolicy: IfNotPresent
        args: [
          "-c", "/etc/filebeat.yml",
          "-e",
        ]
        resources:
          limits:
            memory: 500Mi
          requests:
            cpu: 100m
            memory: 100Mi
        securityContext:
          runAsUser: 0
        volumeMounts:
        - name: filebeat-config
          mountPath: /etc/filebeat.yml
          subPath: filebeat.yml
        - name: tomcat-logs
          mountPath: /usr/local/tomcat/logs
      volumes:
      - name: tomcat-logs
        emptyDir: {}
      - name: tomcatwebroot
        hostPath:
          path: /opt/tomcatwebroot
          type: Directory
      - name: filebeat-config
        configMap:
          name: filebeat-config
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: filebeat-config
  namespace: default

data:
  filebeat.yml: |-
    filebeat.inputs:
    - type: log
      paths:
        - /usr/local/tomcat/logs/catalina.*

      fields:
        app: www
        type: tomcat-catalina
      fields_under_root: true
      multiline:
        pattern: '^\['
        negate: true
        match: after

    setup.ilm.enabled: false
    setup.template.name: "tomcat-catalina"
    setup.template.pattern: "tomcat-catalina-*"

    output.logstash:
      hosts: ['192.168.10.202:5056']