什麼是監控？ 相關文字： * https://rickhw.github.io/2016/07/29/AWS/AWS-Certified-SysOps-Administrator/ * https://rickhw.github.io/2017/06/21/AWS/Stategies-System-Monitor_and_CloudWatch/ * https://rickhw.github.io/2017/11/27/DevOps/What-is-Ops/

1. 1

2. 什麼是監控？
(What is Monitoring?)
2
rick_kyhwang@hotmail.com
https://rickhw.github.io
2017/12/21

3. 前言
中文的語言特性關係，常常會出現『偏義詞』，也就是兩個全然不同意義的字放在一起
，只表達其中之一。這樣組合成『詞』的目的，理由很浪漫、文青：為了方便，可以襯托
出文字的美感。
但是身為專業軟體工程師，語意是不能含糊或者偏義的，就像程式邏輯要單一職責，
有清楚的架構邏輯。所以用詞我都會把它拆解，且轉化成更加務實的英文重新解釋。
這種偏義副詞本意上雖然是偏向某一個字，但實際上代表的是先、後的關係，邏輯上
是兩者都要有的。
3

4. 常見的偏義副詞
● 窗戶 偏『窗』義
● 恩仇 偏『仇』義
● 生死 偏『死』義
● 風雨 偏『雨』義
● 愛恨 偏『恨』義
● 出沒 偏『沒』義
● 監控 偏『控』義
● 維運 偏『維』義
4

5. 5

6. 6
本文重新整理
『淺談系統監控與 AWS CloudWatch 的應用』
的核心概念與想法

7. 監
7

8. 監 控
8

9. 監 控
9

10. 監 控
Watch
Monitor
Observe
Measure
10

11. 監 控
Watch
Monitor
Observe
Measure
Control
Command
Handle
Manage
11

12. 監 控
Watch
Monitor
Observe
Measure
Control
Command
Handle
Manage
12
Dashboard
(儀表板)

13. 監 控
Watch
Monitor
Observe
Measure
Control
Command
Handle
Manage
13
Dashboard
(儀表板)
Console
(主控台)

14. 14

15. 15
Target Services /
Systems

16. 16
Target Services /
Systems
Watchers

17. 17
Target Services /
Systems
Watchers Controllers

18. Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
18
Target Services /
Systems
Watchers Controllers
Push or Pull Data
(Observability, Measure)

19. Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
Push or Pull Data
(Observability, Measure)
19
Target Services /
Systems
Watchers Controllers
Events
(Conditions / Thresholds)
Console => Do Something
● Reset or Clean Cache
● On / Off Functions
● Notification
● ...

20. Commands
Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
20
Target Services /
Systems
Watchers Controllers
Events
(Conditions / Thresholds)
Console => Do Something
● Reset or Clean Cache
● On / Off Functions
● Notification
● ...
Push or Pull Data
(Observability, Measure)

21. Commands
Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
21
Target Services /
Systems
Watchers Controllers
Events
(Conditions / Thresholds)
Console => Do Something
● Reset or Clean Cache
● On / Off Functions
● Notification
● ...
Feedback
(Adjust Conditions / Thresholds by ML)
Push or Pull Data
(Observability, Measure)

22. Commands
Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
22
Target Services /
Systems
Watchers Controllers
Events
(Conditions / Thresholds)
Console => Do Something
● Reset or Clean Cache
● On / Off Functions
● Notification
● ...
Feedback
(Adjust Conditions / Thresholds by ML)
Push or Pull Data
(Observability, Measure)
監

23. Commands
Dashboard => Show Something
● Health Status
● Sum of Biz TX
● Sys Resources
● …
23
Target Services /
Systems
Watchers Controllers
Events
(Conditions / Thresholds)
Console => Do Something
● Reset or Clean Cache
● On / Off Functions
● Notification
● ...
Feedback
(Adjust Conditions / Thresholds by ML)
Push or Pull Data
(Observability, Measure)
監 控

24. 24
Observability vs Monitoring
● 氣象局
○ Observability 觀測
○ Measurement 量測
● 政府
○ Monitoring
○ Alert
○ Action
○ Feedback

25. 25

26. Dashboard
儀表板 - 呈現
26

27. Dashboard - 儀表板
27
● 把觀測 (Observe) 、量測 (Measure) 的訊息透過圖像化呈現出來
● 儀表板上的資料應該要來自於 Log
● 觀測 、量測本身是 Sampling (取樣) 概念，密集度越高越好
○ 取樣 (Sapmling)：數位概念，用音樂 CD 音質來說，為 44.1k/s，每秒有 44.1k 個取樣
○ 一般來說系統的量測頻率可以有 0.5 per second 算是很高的了
○ Sampling 是有額外資源需求的，就像是加解密一樣，都會額外吃 Computing
● 量測的目的是：呈現系統狀況，用以做分析，進而做決策 (自動化)

28. Dashboard (儀表板)
28

29. Dashboard (儀表板)
29
VSTS

30. Dashboard (儀表板)
30
StarTrek (星艦企業號)

31. Questions
31
● 如何量測 (Measure)？用什麼方法？多久一次？
● 如何觀測 (Observe)？
● 資料怎麼來的？如何確立正確性？
● 量測指標 (Metric) 背後代表的意義是什麼？
● 量測的數據如何有公信力？
● 你相信氣象數據？那些數據怎麼來的？

32. 32

33. Console
主控台 - 控制
33

34. Console - 主控台
34
● 設定參數 / 改變輸入值的地方
● 輸入值要根據某種條件 (Condition) 做變化
○ 這個變化過程就是 Controller
○ Controller 可以透過 Human / AI
● 輸入方式跟待輸入變數的類型有關，像是整數、字串、選擇、真假 …
○ UI 的設計也會不一樣: button, select, choice, checkbox ...

35. Console (主控台)
35
演唱會 Mixer

36. Console (主控台)
36
音樂製作
Cubase - Mixer

37. Console (主控台)
37
飛機
https://www.quora.com/Is-the-console-in-front-of-the-co-pilot-a-duplicat
e-of-the-console-in-front-of-the-pilot-in-a-passenger-aircraft

38. 38

39. 圖片來源：BASIC HUMAN BEHAVIORAL PRINCIPLES
39
本質: 回授系統

40. 40
本質: 自動化
完整請參閱：What is Automation?

41. 41

42. ● Monitoring vs Observability
● 淺談系統監控與 CloudWatch 的應用
● Study Notes - CloudWatch
● Study Notes - SRE Opening and Chapter 1
● What is Automation?
○ 『自動化 XXX』的陷阱
● AWS Certified SysOps Administrator - Associate 準備心得
○ 什麼是維運？
42
Blog 相關文章

43. 43