Prometheus实现钉钉报警

1、Prometheus实现钉钉报警

1.1 Prometheus环境

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
    - static_configs:
        - targets:
           - 192.168.204.195:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"
  - "rule/*.yml" 

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=` to any timeseries scraped from this config.
  - job_name: "prometheus"
    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.
    static_configs:
      - targets: ["localhost:9090"]
    
  # 采集JVM监控数据
  - job_name: pushgateway
    static_configs:
      - targets: ['192.168.204.195:9091']
        labels: 
          instance: pushgateway

groups:
- name: node_rule
  rules:
  - alert: node memory usages
    expr: node_memory_usages > 20
    for: 10s
    labels:
      severity: high
    annotations:
      summary: "【监控告警】{{ $labels.exported_instance }}: 空间使用率异常"
      description: "【监控告警】{{ $labels.exported_instance }}: 空间使用率异常,请及时处理。"

启动情况：

1.2 pushgateway环境

启动情况：

1.3 自定义机器人并获取自定义机器人Webhook地址

1、首先创建一个群聊。

进入到钉钉软件的主页面后，点击右上角的加号按钮。

弹出加号里面的选项后，点击上面的发起群聊按钮。

进入到发起群聊界面后选择内部项目群，选择属于个人，点击上面的选择联系人选项。

进入到联系人界面后，选择要加入群聊的好友，最后点击右下角确定即可。

2、选择需要添加机器人的群聊，然后依次单击群设置 > 智能群助手 > 添加机器人。

3、点击添加机器人。

4、选择自定义。

5、点击添加。

6、输入相关信息，点击完成。

加签生成的随机码需要保存，后面会使用到。

7、点击完成。

这样我们就成功添加了自定义钉钉机器人并获取了 Webhook 地址。

获取到的Webhook的地址如下：

https://oapi.dingtalk.com/robot/send?access_token=57af98ce4cea66cb829df72c531efe093c6a254134ecf555f1

1.4 钉钉报警插件

访问github下载最新的插件(prometheus-webhook-dingtalk)：

https://github.com/timonwong/prometheus-webhook-dingtalk/

这里下载 prometheus-webhook-dingtalk-2.1.0.linux-amd64.tar.gz：

https://github.com/timonwong/prometheus-webhook-dingtalk/releases/download/v2.1.0/prometheus-webhook-dingtalk-2.1.0.linux-amd64.tar.gz

上传到服务器进步解压：

$ tar -xvf prometheus-webhook-dingtalk-2.1.0.linux-amd64.tar.gz

修改配置文件：

$ vim config.example.yml

# 将内容修改为
# Targets, previously was known as "profiles"
targets:
  webhook1:
    url: https://oapi.dingtalk.com/robot/send?access_token=57af98ce4cea66cb829df72c531efe093c6a254134ecf555f1
    # secret for signature
    secret: SEC5d2ad4bd4cea26830145472cdd7c8dda5b8bea57a029f4f7db7524
  webhook_mention_users:
    url: https://oapi.dingtalk.com/robot/send?access_token=57af98ce4cea66cb829df72c531efe093c6a254134ecf555f1
    mention:
      mobiles: ['18210820213']

启动：

$ nohup ./prometheus-webhook-dingtalk --config.file="config.example.yml" >> nohup.out 2>&1 &

1.5 alertmanager环境

global:
  resolve_timeout: 5m
route:
  group_by: ['alertname']
  group_wait: 15s
  group_interval: 30s
  repeat_interval: 2m
  receiver: 'web.hook'
receivers:
  - name: 'web.hook'
    webhook_configs:
      # prometheus-webhook-dingtalk的地址
      - url: 'http://192.168.204.195:8060/dingtalk/webhook1/send' 
        send_resolved: true
inhibit_rules:
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'dev', 'instance']

启动情况：

1.6 触发报警

触发告警前：

# 执行该脚本触发告警
cat <<EOF | curl --data-binary @- http://192.168.204.195:9091/metrics/job/test_job/instance/test_instance
node_memory_usages 36
node_memory_total 36000
EOF

触发告警后：

钉钉接收到的消息：

如果恢复告警也会收到信息：

至此钉钉告警完成。