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    # 從緊急事件,談 SRE 應變能力的培養 ###### tags: `DevOpsDays Taipei 2018` `9/12` `14:00~14:40` `Track A` {%hackmd zjE8rohhTBKEAPwdaLV11Q %} > Slide: https://rickhw.github.io/2018/09/12/DevOps/DevOpsDaysTaipei2018-Emergency-And-Incident-Management/ > 問題也整理在 Blog. ## 簡介SRE - **S**ite - **R**eliability - **E**ngineering ## 用電影來說「緊急事件」 薩利機長:哈德遜奇蹟 > SOP 在事件當下,不見得是唯一標準 > 復興航空意外是一個不按照標準程序執行的人為意外,其實這例子舉的不對。 ## 事件當下的應變 (事後補救): 行動與策略 ==止血==是事件當下的**第一行動** > Things break, that's life. ### 止血原則:減法原則,不要加變因(東西) > 減法原則 > ### 止血超過一段時間,怎麼辦? #### 現場調查 問題的拆分案例: 分而治之 理解系統如何運作不能讓你成為專家 只有理解(調查)系統為何不能運作才會. #### 現場溝通:對內、對外 溝通要有方法 釐清問題時:請用圖來溝通 * 紅 尾 * 黑 頭 * 綠 方向未來 * 藍 問題點,討論 溝通時要注意的(口語,白板,M) 事件中溝通的**反模式** ex:一直問:問題找了沒? 案例: slack https://status.slack.com/2018-06/142edcb9e52c7663 #### 策略劇本 整理事件紀錄 > 通常整理的人會學到很多東西 在事件當下要考慮人性 * 時間點(上班,週末,白天晚上..) * 體力,食物,精神支持與鼓勵 > 沒有什麼大神,雷踩多了就是大神 > > 神寫的系統是不會有雷的,除了索爾 ## 架構,探索,管理(事前預防) 不能把運氣當策略 平時應該思考: * 永遠保持謹惕 ### 了解系統架構 這邊談的是:已經落地的架構。 系統架構的抽象概念 * 隱藏實作 * 具體角色的可視性存取性 * 關注服務相依性 * 要有清楚的使用者定義 * 要可以講故事,說出商業價值 * 平時溝通就應該就這樣做 ### 系統架構:現場的實踐 不管用什麼架構,要能用最少資源,把架構落地 降雨量是什麼?vs 網路流量是什麼? ### 分散式系統的謬論 思考:監控指標怎麼來的? 經過測試探索發現來的。 ## 管理 ==建立標準化作業流程== 溝通的先行要件:名詞標準化 ## 新創事業的發展階段 --- > 場外聊天室,歡迎在下方喇賽 SRE有這職缺嗎?很多啊XD > 感覺台灣比較少 > >舊的公司比較少啦, 你知道在公司要create 新的title, 遠遠比create 新的工作難得多. > > >賣肝人生 (菸) > 很多公司在徵啊 https://github.com/DevOpsTW/jobs/issues > 或者在 fb.sre.tw 社團內也常常有公司在貼求才 > 有新鮮的肝想試試看嗎 > 歡迎新鮮人喔 > https://goo.gl/HDhyJt 中午我們備援Server啟動,我還花時間看到底怎麼回事orz...... 我早上出門前都還在解今天凌晨切換的Bug.. (啊,我戒煙了) 按照SOP 某種程度上就是讓第一線的人免於背負責任. SOP 不是那麼萬惡不赦啊 >.< 有簡報分享嗎?好快, 來不及拍 > Rick 一般會後都會分享...專心聽吧 > Rick 一定會分享,甚至會寫成文章,所以專心聽吧! 簡報應該會後都會分享,大會也有錄影。 > Slide: https://rickhw.github.io/2018/09/12/DevOps/DevOpsDaysTaipei2018-Emergency-And-Incident-Management/

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