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# 國泰如何進行金融 SRE 的發展 - 鄭正略 (Louis) ###### tags: `2023` {%hackmd @sre-conf/H1pCafrG3 %} SRE 最重要的是經驗的分享,以及如何傳承下去 經驗分享 - Container - Microservices and APIs - Scalable cloud infrastructure - DevOps 開源導入使用規範 透過Scan, 評分 Supply chain security ## 金融為何要 SRE ## 現代化監控中心發展路線圖 ## 銀行(金融) SRE 的運作方式 目標效益 1. 強化營運維穩 2. 提升應變速度 3. 降低間接影響 4. 優化協作監控 #### 初期目標效益 - 營運維穩、應變快速為主軸 1. 先提升**營運監控**的能力 2. 輔以監控數據度變化為手段發展 3. 資訊處、數據及中台三位一體**協作**運營下,加速監控集中整合、監控標準化、問題異常排除 降低誤判、在客訴之前發現問題 #### 發展至中期階段 - 導入事件預測模型**模擬預測事件發生**、加快因應能力 - 確認軟硬體關聯性,便於**降低動東壞西**的錯誤發生 - ***SRE團隊***建立相關儀表板建制、整體監控制度建置 #### 運營維穩、首要監控 即時準確告警->分析定位故障->高效快速排障->資源架構優化 階段六 故障規避 MTBF -> infinity - MTBF:平均故障間隔時間 階段五 協同停損 MTTR -> 0 - MTTR:平均故障恢復時間 階段四 根因定位 故障定位時間 -> 0 - 看到細節後,要持續去跟蹤,不是重啟解決就算了 階段三 監控運營 監控有效率 -> 100% - 用最效率的方式滿足監控需求,保證需求持續改進並有效 階段二 集中運營 事件即時響應 -> 100% 階段一 基礎營運 專業監控覆蓋率100% SRE 必須要有plan a,b,c,d 很critical 的系統要注意裝Agent的影響 AP 一定要動,要有Standard,要求AP配合 不要留垃圾資料,最好從源頭就只保留有用的資訊 Zabbix https://www.zabbix.com/ - 網路設備監控 - 伺服器監控 - Cloud監控 - 應用監控 - 服務監控 ### 為何需要SRE/DevOps? - 透過軟體工程手法解決複雜維運問題 - 釋放人力 - 透過開發自動化工具輔助 #### 可靠性 - 可靠性高低——取決於**服務不可用的時間長短** > 不可存取的時間越短 = 服務可靠性越高 > Ex: 99%/年 = 每一年中約3.65天無法存取服務為可被允許狀況 ##### 重要指標: - MTBF(平均故障間隔時間)`Mean Time Between Failure` **越高代表故障機率越低** - MTTR(平均修復時間)`Mean Time To Repair` **越低表示每次發生錯誤時影響越小** ### Case - 壓測 - Memory Leak 現象 - Java 中 Busy Thread 變多示警 - TPS QPS 現代化監控中心的分類 DEM 數位體驗監控 NPMD: 網路性能 ITIM: IT 基礎設施監控 APM 應用性能 IT運營組織的管理成熟度 能力驅動型組織 用戶/市場驅動型組織 關注在 k8s 上,有沒有想過是底層出問題? ### 路線圖 ### 階段目標 Ops SRE

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