13.5 告警静默

本节重点介绍 :

• 静默应用场景
• 页面创建
• api接口创建
• 查看

静默

作用

• 先告警后静默：持续发送的告警停止发送
• 先配置静默：上线或者运维操作会导致触发一大波告警，提前创建静默消息。防止告警风暴

静默接口

• /api/v2/silences

调用静默的代码

package main

import (
	"bytes"
	"encoding/json"
	"github.com/prometheus/alertmanager/pkg/labels"
	"github.com/prometheus/alertmanager/types"
	"io/ioutil"
	"log"
	"net/http"
	"time"
)

func createSilence(alertMUrl string) {
	matchers := labels.Matchers{}
	m1 := &labels.Matcher{
		Type:  labels.MatchEqual,
		Name:  "node_name",
		Value: "abc",
	}
	matchers = append(matchers, m1)
	si := types.Silence{
		ID:        "",
		Matchers:  matchers,
		StartsAt:  time.Now(),
		EndsAt:    time.Now().Add(3 * time.Hour * 24),
		CreatedBy: "xiaoyi",
		Comment:   "小乙创建的告警静默",
		Status:    types.SilenceStatus{},
	}

	jsonStr, _ := json.Marshal(si)

	req, err := http.NewRequest("POST", alertMUrl, bytes.NewBuffer(jsonStr))
	if err != nil {
		return
	}
	req.Header.Set("Content-Type", "application/json")

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		log.Printf("[http.post.request.err][url:%v][err:%v]", alertMUrl, err)
		return
	}
	defer resp.Body.Close()

	log.Printf("response Status:%v", resp.Status)
	log.Printf("response Headers:%v", resp.Header)
	body, _ := ioutil.ReadAll(resp.Body)
	log.Printf("response Body:%v", string(body))

}




func main() {
	alertMUrl := "http://172.20.70.215:9093/api/v1/silences"
	createSilence(alertMUrl)

}

• 解读，构造github.com/prometheus/alertmanager/types下的Silence对象
• 调用post发送即可

运行程序后查看alertmanager页面

• path http://172.20.70.215:9093/#/silences
• 举例图片

创建完静默后，重启prometheus 和alertmanager

• 查看是否会被静默
• 举例图片

本节重点总结 :

• 静默应用场景
• 页面创建
• api接口创建
• 查看