Prometheus通过Kafka_exporter监控kafka并发送钉钉报警

1.下载kafka_exporter相关包：wget https://github.com/danielqsj/kafka_exporter/releases/download/v1.4.2/kafka_exporter-1.4.2.linux-amd64.tar.gz2.解压注意：一个kafka集群（CDH kafka集群同样适用），只需要配置一个kafka_exporter即可，同时kafka

只是喜欢玩大数据

4709人浏览 · 2022-04-11 11:21:22

只是喜欢玩大数据 · 2022-04-11 11:21:22 发布

1.下载kafka_exporter相关包：

wget https://github.com/danielqsj/kafka_exporter/releases/download/v1.4.2/kafka_exporter-1.4.2.linux-amd64.tar.gz

2.解压

注意：一个kafka集群（CDH kafka集群同样适用），只需要配置一个kafka_exporter即可，同时kafka_exporter必须部署在kafka节点上。

tar -xf kafka_exporter-1.4.2.linux-amd64.tar.gz

3.创建服务系统文件

vim /usr/lib/systemd/system/kafka-export.service

[Unit]
Description=kafka_exporter stats exporter for Prometheus
Documentation=Prometheus exporter for various metrics about kafka_exporter, https://github.com/danielqsj/kafka_exporter/.

[Service]
ExecStart=/home/bpaas/soft/kafka_exporter/kafka_exporter --kafka.server=localhost:9092

[Install]
WantedBy=multi-user.targe

4.启动服务，设置开机自启

systemctl daemon-reload
systemctl start kafka-export.service
systemctl enable kafka-export.service
systemctl status kafka-export.service
systemctl restart kafka-export.service

5.访问kafka_exporter的metries

kafka_exporter默认端口为9308。

http://**.**.**.125:9308/metrics

6.配置prometheus访问kafka的metries文件

 - job_name: 'kafka'
    static_configs:
      - targets: ['**.**.**.125:9308']

7.重启prometheus

cd /soft/prometheus
./promtool check config  prometheus.yml
systemctl reload prometheus.service

8.观察Prometheus Targets

http://localhost:9090/targets

在这里插入图片描述

9.配置报警规则并发送钉钉报警

这个报警是我自己配置的kafka节点down机报警规则，仅供参考

groups:
 - name:  kafka_general
   rules:
   - alert: Kafka InstanceDown # 告警名称
     expr: sum(kafka_brokers) < 5
     for: 15s # 满足告警条件持续时间多久后，才会发送告警
     labels: #标签项
        severity: error
     annotations: # 解析项，详细解释告警信息
         summary: "Instance {{ $labels.instance }} down"
         description: "kafka {{ $labels.instance }} of cluster {{ $labels.job }} has been down for more than 15 second."