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城乡建设网站资料员,2022年最新十条新闻,wordpress主题sora,WordPress杂志模板本节重点介绍 : 使用钉钉机器人发送到钉钉群通过alertmanager webhook发送我们自定义的go程序中解析alert对象并拼接钉钉信息发送需求分析使用钉钉机器人发送到钉钉群钉钉机器人发送群消息文档地址通过webhook发送我们自定义的go程序中然后解析发过来的alert&#x…

本节重点介绍 :

使用钉钉机器人发送到钉钉群
通过alertmanager webhook发送我们自定义的go程序中
解析alert对象并拼接钉钉信息发送

需求分析

使用钉钉机器人发送到钉钉群

钉钉机器人发送群消息

文档地址

通过webhook发送我们自定义的go程序中

然后解析发过来的alert，转换成钉钉的数据结构。推送过去

发送代码编写

钉钉信息json结构体

type dingMsg struct {Msgtype string `json:"msgtype"`Text    struct {Content string `json:"content"`} `json:"text"`At struct {AtMobiles []string `json:"atMobiles"`} `json:"at"`
}

由alert对象拼接钉钉信息

代码如下

// 拼接钉钉信息的函数
func buildDDContent(msg template.Alert) ([]byte, error) {recM := map[string]string{"firing": "已触发", "resolved": "已恢复"}msgTpl := fmt.Sprintf("[规则名称：%s]\n"+"[是否已恢复：%s]\n"+"[告警级别：%s]\n"+"[触发时间：%s]\n"+"[看图连接：%s]\n"+"[当前值：%s]\n"+"[标签组：%s]",msg.Labels["alertname"],recM[msg.Status],msg.Labels["severity"],// prometheus使用utc时间，转换为当前时间msg.StartsAt.In(time.Local).Format("2006-01-02 15:03:04"),msg.GeneratorURL,msg.Annotations["value"],msg.Labels.SortedPairs(),)dm := dingMsg{Msgtype: "text"}dm.Text.Content = msgTplbs, err := json.Marshal(dm)return bs, err
}

解读一下
- prometheus使用utc时间，转换为当前时间
- msg.Labels 和msg.Annotations都是 map[string]string，解析相关字段拼接即可

把我们上述的代码添加到之前的alert_receive.go中

完整代码如下

package mainimport ("bytes""encoding/json""errors""flag""fmt""github.com/gin-gonic/gin""github.com/prometheus/alertmanager/notify/webhook""github.com/prometheus/alertmanager/template""io/ioutil""log""net/http""time"
)func main() {listenAddress := flag.String("addr", ":5001","Address on which to expose metrics and web interface.")flag.Parse()r := gin.Default()r.POST("/alert", alertReceive)r.Run(*listenAddress) // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}func alertReceive(c *gin.Context) {var msg webhook.Messageif err := c.BindJSON(&msg); err != nil {c.JSON(400, errors.New("invalid args"))return}baseMsg := fmt.Sprintf("[状态：%s][报警条数:%d]", msg.Status, len(msg.Alerts))log.Printf("[alertReceive][baseMsg:%+v]", baseMsg)for i := 0; i < len(msg.Alerts); i++ {alert := msg.Alerts[i]bs, _ := buildDDContent(alert)log.Printf("[detail][%d/%d][alert:%+v]", i+1, len(msg.Alerts), alert)sendToDing(bs)}c.JSON(200, "ok")
}type dingMsg struct {Msgtype string `json:"msgtype"`Text    struct {Content string `json:"content"`} `json:"text"`At struct {AtMobiles []string `json:"atMobiles"`} `json:"at"`
}// 拼接钉钉信息的函数
func buildDDContent(msg template.Alert) ([]byte, error) {recM := map[string]string{"firing": "已触发", "resolved": "已恢复"}msgTpl := fmt.Sprintf("[规则名称：%s]\n"+"[是否已恢复：%s]\n"+"[告警级别：%s]\n"+"[触发时间：%s]\n"+"[看图连接：%s]\n"+"[当前值：%s]\n"+"[标签组：%s]",msg.Labels["alertname"],recM[msg.Status],msg.Labels["severity"],// prometheus使用utc时间，转换为当前时间msg.StartsAt.In(time.Local).Format("2006-01-02 15:03:04"),msg.GeneratorURL,msg.Annotations["value"],msg.Labels.SortedPairs(),)dm := dingMsg{Msgtype: "text"}dm.Text.Content = msgTplbs, err := json.Marshal(dm)return bs, err
}func sendToDing(jsonByte []byte) {apiUrl := "https://oapi.dingtalk.com/robot/send?access_token=75f08bf6f2fa40d45bc987608fa3ffa860bc9d8e2cd2b6099a5cc644ba0b3c50"req, err := http.NewRequest("POST", apiUrl, bytes.NewBuffer(jsonByte))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]", apiUrl, 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))
}

修改prometheus侧配置

rule配置文件添加 value在annotation中

groups:
- name: alert_g_1rules:- alert: node_load too highexpr:  node_memory_Active_bytes>0labels:severity: criticalnode_name: abcannotations:summary: 机器太累了value: "{{ $value }}"- name: alert_g_2rules:- alert: mysql_qps too highexpr: mysql_global_status_queries >0labels:severity: warningnode_name: abcannotations:summary: mysql太累了value: "{{ $value }}"

service文件中添加 --web.external-url=http://172.20.70.215:9090/
这个代表最后告警中的 GeneratorURL字段使用这个链接前缀，钉钉告警中的看图链接能直接访问到对应的prometheus
重启prometheus和alertmanager

观察5001 receive到的报警

2021/08/19 11:39:06 [alertReceive][baseMsg:[状态：firing][报警条数:1]]
2021/08/19 11:39:06 [detail][1/1][alert:{Status:firing Labels:map[alertname:node_load too high instance:172.20.70.205:9100 job:node_exporter node_name:abc severity:critical] Annotat
ions:map[summary:机器太累了 value:1.0065547264e+10] StartsAt:2021-08-19 03:39:01.628 +0000 UTC EndsAt:0001-01-01 00:00:00 +0000 UTC GeneratorURL:http://172.20.70.215:9090/graph?g0.e
xpr=node_memory_Active_bytes+%3E+0&g0.tab=1 Fingerprint:0ccc723bf948e5fb}]
2021/08/19 11:39:06 response Status:200 OK
2021/08/19 11:39:06 response Headers:map[Cache-Control:[no-cache] Connection:[keep-alive] Content-Type:[application/json] Date:[Thu, 19 Aug 2021 03:39:06 GMT] Server:[DingTalk/1.0.0
]]
2021/08/19 11:39:06 response Body:{"errcode":0,"errmsg":"ok"}
[GIN] 2021/08/19 - 11:39:06 |?[97;42m 200 ?[0m|    181.7246ms |   172.20.70.215 |?[97;46m POST    ?[0m "/alert"

观察钉钉群收到的信息

[规则名称：node_load too high]
[是否已恢复：已触发]
[告警级别：critical]
[触发时间：2021-08-19 11:11:39]
[看图连接：http://172.20.70.215:9090/graph?g0.expr=node_memory_Active_bytes+%3E+0&g0.tab=1]
[当前值：1.0065547264e+10]
[标签组：[{alertname node_load too high} {instance 172.20.70.205:9100} {job node_exporter} {node_name abc} {severity critical}]]