add dingtalk alarm blog(CN) (#169)

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+---
+title: SkyWalking报警发送到钉钉群
+date: 2020-12-13
+author: tristan-tsl
+description: 本文将详细介绍如何配置告警发送到钉钉群
+---
+
+
+
+这篇文章暂时不讲告警策略, 直接看默认情况下激活的告警目标以及钉钉上的告警效果
+
+SkyWalking内置了很多默认的告警策略, 然后根据告警策略生成告警目标, 我们可以很容易的在界面上看到
+
+![image-20201213163408221](image-20201213163408221.png)
+
+当我们想去让这些告警目标通知到我们时, 由于SkyWalking目前版本(8.3)已经自带了, 只需要简单配置一下即可
+
+我们先来钉钉群中创建机器人并勾选加签
+
+![image-20201213164116760](image-20201213164116760.png)
+
+然后再修改告警部分的配置文件, 如果你是默认的配置文件(就像我一样), 你可以直接执行以下命令, 反之你也可以手动修改configs/alarm-settings.yml文件
+
+```
+tee <your_skywalking_path>/configs/alarm-settings.yml <<-'EOF'
+dingtalkHooks:
+  textTemplate: |-
+    {
+      "msgtype": "text",
+      "text": {
+        "content": "Apache SkyWalking Alarm: \n %s."
+      }
+    }
+  webhooks:
+    - url: https://oapi.dingtalk.com/robot/send?access_token=<access_token>
+      secret: <加签值>
+EOF
+```
+
+
+
+最终效果如下
+
+![image-20201213164145494](image-20201213164145494.png)
+
+参考文档:
+
+https://github.com/apache/skywalking/blob/master/docs/en/setup/backend/backend-alarm.md
+
+https://ding-doc.dingtalk.com/doc#/serverapi2/qf2nxq/uKPlK
+
+谢谢观看, 后续我会在SkyWalking告警这块写更多实战文章
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