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        諧云 諧云
        在這里探索云原生
        推動上下游生態協作,開啟邊緣設備的云原生管理能力
        2021年11月16日

        近期,OpenYurt 發布了 v0.5.0 版本。在新發布版本中首次提出 kubernetes-native非侵入、可擴展的邊緣設備管理標準,使 Kubernetes 業務負載模型和 IOT 設備管理模型無縫融合。同時聯合 VMware 推動 EdgeX Foundry 作為云原生設備管理模型的首個實現并成功落地,大大降低 EdgeX Foundry 在 Kubernetes 上的部署管理的復雜度同時也提升了邊緣設備的管理效率。

        作者|賈燚星(VMware)  何淋波(阿里云)

         

        |邊緣設備的云原生管理特點|

        當使用 Kubernetes 來解決邊緣計算場景的需求時,現有的解決方案要么改變系統架構(如將控制平面和 kubelet 打包在一起),要么重度修改核心組件(如kubelet 中糅合設備管理)。

        受 Unix 哲學:“做一件事,做好它”(Do one thing and do it well)的啟發,OpenYurt 社區認為 Kubernetes 應該專注于計算資源和業務容器的管理,而邊緣設備管理可以通過采用現有的邊緣計算平臺來完成。

        因此,OpenYurt 社區定義了通用的 Kubernetes CRDs,它們充當 OpenYurt 和邊緣平臺之間的中介。通過為這些 CRDs 實現自定義控制器,任何現有的邊緣平臺(如 EdgeX Foundry)都可以集成到 OpenYurt 中。同時這些 CRDs 允許用戶以聲明式的方式管理邊緣設備,這為用戶提供了 Kubernetes-native 的邊緣設備管理體驗。

        因此,邊緣設備的云原生管理特點可以總結為:Kubernetes-native 方式管理,非侵入模式集成,無邊緣計算平臺綁定。

         

        |Kubernetes-native 方式管理邊緣設備|

        邊緣設備的云原生管理能力主要包括以下幾個要點:

        ● Kubernetes 業務負載模型與邊緣設備管理模型的無縫融合;

        ● Kubernetes-native 方式管理邊緣設備;

        ● EdgeX Foundry 作為 OpenYurt 社區第一個融合的 IoT 解決方案,共同探索了一條開放標準的 IoT、云原生融合方案;

        首先引入 yurt-edgex-manager 組件,主要用于在 OpenYurt 集群中從節點池維度來管理 EdgeX Foundry 的生命周期(包括安裝部署,刪除,更新)。用戶只需要通過簡單編輯的 EdgeX CRD 就可以輕松的管理 EdgeX Foundry 系統。推薦以節點池為維度部署 EdgeX Foundry 系統。原理如下所示:

        其次引入 yurt-device-controller 組件,它是 Kubernetes 系統和邊緣計算平臺(如 EdgeX Foundry)的聯結器,使用戶可以通過 Kubernetes CRs 來管理邊緣設備。一個 yurt-device-controller 實例對應一個節點池的 EdgeX Foundry。整體部署架構如下:

        |總結|

        OpenYurt 與 EdgeX Foundry 的融合完全是基于開源社區的運作機制逐步討論并落地實現的,由 VMware,阿里云等公司主導,社區成員充分參與討論而成型的。在整個項目的落地過程中,進一步完善了 OpenYurt 社區的開源治理流程與機制,更好的推動了邊緣計算領域的上下游生態協作。

        多個項目的并行設計與開發,讓大家更好的體驗到'Kubernetes-native, 非侵入,可擴展'等設計理念的優勢,也為邊緣設備的云原生管理能力落地以及后續演進提供了基礎保障。目前已經有不少社區成員在試用該能力,同時 OpenYurt 社區也在陸續推出相關能力的 Demo 視頻。

        OpenYurt 新版本中重點提升了原生 Kubernetes 在邊緣場景的設備管理能力,同時也優化和完善邊緣場景的治理能力,后續 OpenYurt 社區會在邊緣設備管理,項目易用性,單元化治理能力等方面持續投入。

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        諧云
        2024年03月02日
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        2024年03月02日
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