1、rpm安装Logstash

 wget https://artifacts.elastic.co/downloads/logstash/logstash-6.8.7.rpm
yum install -y logstash-6.8.7.rpm

2、创建syslog配置

input {
        beats{
         port=> 5044         
        }
}
 
output {
        elasticsearch {
                hosts => ["http://localhost:9200"]
                index => "k8s-log-%{+YYYY-MM-dd}"
                }
}


```bash
修改配置文件logstash.yml
vim /etc/logstash/logstash.yml

设置管道配置文件路径为/etc/logstash/conf.d

path.config: /etc/logstash/conf.d

``

3、直接在命令行运行查看效果

cd  /usr/share/logstash/bin
logstash -f /etc/logstash/conf.d/logstash.conf

4、常用指令
systemctl start logstash
systemctl status logstash
systemctl enable logstash

5、采集k8s系统组件日志
k8s-logs.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: k8s-logs-filebeat-config
  namespace: kube-system
data:
  filebeat.yml: |-
    filebeat.prospectors:
      - type: log
        paths:
          - /messages
        fields:
          app: k8s
          type: module
        fields_under_root: true
    output.logstash:
      hosts: ['192.168.56.104:5044']

---

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: k8s-logs
  namespace: kube-system
spec:
  selector:
    matchLabels:
      project: k8s
      app: filebeat
  template:
    metadata:
      labels:
        project: k8s
        app: filebeat
    spec:
      containers:
      - name: filebeat
        image: collenzhao/filebeat:6.5.4
        args: [
          "-c", "/etc/filebeat.yml",
          "-e",
        ]
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
          limits:
            cpu: 500m
            memory: 500Mi
        securityContext:
          runAsUser: 0
        volumeMounts:
        - name: filebeat-config
          mountPath: /etc/filebeat.yml
          subPath: filebeat.yml
        - name: k8s-logs
          mountPath: /messages
      volumes:
      - name: k8s-logs
        hostPath:
          path: /var/log/messages
          type: File
      - name: filebeat-config
        configMap:
          name: k8s-logs-filebeat-config

6、效果