Prometheus监控神器-Alertmanager篇（四）

钉钉机器人(Webhook)
对于钉钉大家都已经很熟悉了，大部分企业都已经启用钉钉办公了，同时其推出的免费的webhook机器人也很受大家的欢迎。我们这里讲一下借助第三方开源组件如何对钉钉集成警报功能。

首先需要在钉钉创建机器人，然后在白名单中添加关键字信息与ip限制等安全设置，这个只要你有群，你就可以在群里面建，非常简单，这里就不做演示了

先把Prometheus-webhook-Dingtalk组件装好。

mkdir -p /etc/prometheus-webhook-dingtalk/template/
cd /etc/prometheus-webhook-dingtalk/
wget https://github.com/timonwong/prometheus-webhook-dingtalk/releases/download/v1.4.0/prometheus-webhook-dingtalk-1.4.0.linux-amd64.tar.gz
tar xf prometheus-webhook-dingtalk-1.4.0.linux-amd64.tar.gz
mv prometheus-webhook-dingtalk-1.4.0.linux-amd64/* /etc/prometheus-webhook-dingtalk/
mv prometheus-webhook-dingtalk /bin/
cat <<EOF> /lib/systemd/system/prometheus-webhook-dingtalk.service 
[Unit]
Description=prometheus-webhook-dingding
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/bin/prometheus-webhook-dingtalk --web.listen-address=":8070" --web.enable-ui --config.file="/etc/prometheus-webhook-dingtalk/config.yml"
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF
## 启动服务
systemctl enable prometheus-webhook-dingtalk.service
systemctl start prometheus-webhook-dingtalk.service

配置文件

## Request timeout
# timeout: 5s

## Customizable templates path
## Customizable templates path
templates:
        # - contrib/templates/legacy/template.tmpl
  # 自定义模板路径
  - /etc/prometheus-webhook-dingtalk/template/default.tmpl

## 你还可以使用' default_message '覆盖默认模板
## 下面的示例使用v0.3.0中的“legacy”模板
# default_message:
#   title: '{{ template "legacy.title" . }}'
#   text: '{{ template "legacy.content" . }}'

## Targets, previously was known as "profiles"
# 定义的webhook，钉钉创建的webhook token
targets:
# 如果有多个分组就可以在这里定义多个接口
  ops:
    url: https://oapi.dingtalk.com/robot/send?access_token=a4feed2322222222222222222222222
  web:
    url: https://oapi.dingtalk.com/robot/send?access_token=a4feed2325c1333333333333333333333

定义模板：

cd /etc/prometheus-webhook-dingtalk/template
cat default.tmpl
{{ define "__subject" }}[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .GroupLabels.SortedPairs.Values | join " " }} {{ if gt (len .CommonLabels) (len .GroupLabels) }}({{ with .CommonLabels.Remove .GroupLabels.Names }}{{ .Values | join " " }}{{ end }}){{ end }}{{ end }}
{{ define "__alertmanagerURL" }}{{ .ExternalURL }}/#/alerts?receiver={{ .Receiver }}{{ end }}

{{ define "__text_alert_list" }}{{ range . }}
**Labels**
{{ range .Labels.SortedPairs }}> - {{ .Name }}: {{ .Value | markdown | html }}
{{ end }}
**Annotations**
{{ range .Annotations.SortedPairs }}> - {{ .Name }}: {{ .Value | markdown | html }}
{{ end }}
**Source:** [{{ .GeneratorURL }}]({{ .GeneratorURL }})
{{ end }}{{ end }}

{{/* Firing */}}

{{ define "default.__text_alert_list" }}{{ range . }}

**Trigger Time:** {{ dateInZone "2006.01.02 15:04:05" (.StartsAt) "Asia/Shanghai" }}

**Summary:** {{ .Annotations.summary }}

**Description:** {{ .Annotations.description }}

**Graph:** [📈 ]({{ .GeneratorURL }})

**Details:**
{{ range .Labels.SortedPairs }}{{ if and (ne (.Name) "severity") (ne (.Name) "summary") }}> - {{ .Name }}: {{ .Value | markdown | html }}
{{ end }}{{ end }}
{{ end }}{{ end }}

{{/* Resolved */}}

{{ define "default.__text_resolved_list" }}{{ range . }}

**Trigger Time:** {{ dateInZone "2006.01.02 15:04:05" (.StartsAt) "Asia/Shanghai" }}

**Resolved Time:** {{ dateInZone "2006.01.02 15:04:05" (.EndsAt) "Asia/Shanghai" }}

**Summary:** {{ .Annotations.summary }}

**Graph:** [📈 ]({{ .GeneratorURL }})

**Details:**
{{ range .Labels.SortedPairs }}{{ if and (ne (.Name) "severity") (ne (.Name) "summary") }}> - {{ .Name }}: {{ .Value | markdown | html }}
{{ end }}{{ end }}
{{ end }}{{ end }}

{{/* Default */}}
{{ define "default.title" }}{{ template "__subject" . }}{{ end }}
{{ define "default.content" }}#### \[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}\] **[{{ index .GroupLabels "alertname" }}]({{ template "__alertmanagerURL" . }})**
{{ if gt (len .Alerts.Firing) 0 -}}

![Firing-img](https://is3-ssl.mzstatic.com/image/thumb/Purple20/v4/e0/23/cf/e023cf56-0623-0cdf-afce-97ae90eabfda/mzl.uplmrpgi.png/320x0w.jpg)

**Alerts Firing**
{{ template "default.__text_alert_list" .Alerts.Firing }}
{{- end }}
{{ if gt (len .Alerts.Resolved) 0 -}}

![Resolved-img](https://is3-ssl.mzstatic.com/image/thumb/Purple18/v4/41/72/99/4172990a-f666-badf-9726-6204a320c16e/mzl.dypdixoy.png/320x0w.png)

**Alerts Resolved**
{{ template "default.__text_resolved_list" .Alerts.Resolved }}
{{- end }}
{{- end }}

{{/* Legacy */}}
{{ define "legacy.title" }}{{ template "__subject" . }}{{ end }}
{{ define "legacy.content" }}#### \[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}\] **[{{ index .GroupLabels "alertname" }}]({{ template "__alertmanagerURL" . }})**
{{ template "__text_alert_list" .Alerts.Firing }}
{{- end }}

{{/* Following names for compatibility */}}
{{ define "ding.link.title" }}{{ template "default.title" . }}{{ end }}
{{ define "ding.link.content" }}{{ template "default.content" . }}{{ end }}

在Alertmanager中配置警报

# 接收器指定发送人以及发送渠道
receivers:
# ops分组的定义
- name: ops
  email_configs:
  - to: '9935226@qq.com,10000@qq.com'
    send_resolved: true
    headers: { Subject: "[operations] 报警邮件"} # 接收邮件的标题
  # 钉钉配置
  webhook_configs:
  - url: http://localhost:8070/dingtalk/ops/send # 这里是在钉钉开源组件中的接口，如果单独定义的receiver需要对应你的分组与钉钉机器人的webhook token
    # 企业微信配置
  wechat_configs:
  - corp_id: 'ww5421dksajhdasjkhj'
    api_url: 'https://qyapi.weixin.qq.com/cgi-bin/'
    send_resolved: true
    to_party: '2'
    agent_id: '1000002'
    api_secret: 'Tm1kkEE3RGqVhv5hO-khdakjsdkjsahjkdksahjkdsahkj'
# web
- name: web
  email_configs:
  - to: '9935226@qq.com'
    send_resolved: true
    headers: { Subject: "[web] 报警邮件"} # 接收邮件的标题
  webhook_configs:
  - url: http://localhost:8070/dingtalk/web/send

继续使用上面的触发模拟警报，此时会同时让三个警报都接受到警报信息，我们这里只是为了调试，往往一个警报通知就可以满足需求了，对于重要业务还是需要使用电话以及短信提醒。

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文章转自公众号：Kubernetes技术栈