DBA：這有一份對接NBU備份故障排除指南，請查收！

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"摘要：當前DWS支持NBU介質備份恢復，本文介紹DWS對接NBU備份故障排除方法。","attrs":{}}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"本文分享自華爲雲社區","attrs":{}},{"type":"link","attrs":{"href":"https://bbs.huaweicloud.com/blogs/265919?utm_source=infoq&utm_medium=bbs-ex&utm_campaign=ei&utm_content=content","title":"","type":null},"content":[{"type":"text","text":"《DWS對接NBU備份故障排除指南》","attrs":{}}]},{"type":"text","text":"，作者： 唐伯虎點蚊香。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"NetBackup是Veritas公司軟件產品，爲各種平臺提供完整而靈活的數據保護解決方案。這些平臺包括Microsoft Windows、UNIX、Linux 等系統。利用NetBackup可以備份、歸檔和還原計算機上的文件、文件夾或目錄以及卷或分區。當前DWS支持NBU介質備份恢復，本文介紹DWS對接NBU備份故障排除方法。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"部署方式","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"假如已有3節點DWS集羣，Roach(DWS備份工具)將本節點的集羣數據通過TCP發送到遠端NBU Media Server機器。每臺NBU Media Server上面同時安裝NBU Client，並部署Roach client組件，後者接收集羣內Roach進程發來的備份數據，不落盤方式通過XBSA接口轉發給本機的NBU Client，完成NBU備份。恢復流程也類似，只是數據流相反。","attrs":{}}]},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/f2/f2b71db28d351b0fa9b5cdda5f1037bc.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在DWS備份過程中，一般故障主要出自以下三處：","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Roach agent： 即集羣節點內，直接查看集羣備份日誌($GAUSSLOG/roach/)即可","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Roach client: 此插件主要負責數據收發，日誌路徑啓動時通過-l參數指定，進入該路徑查詢即可","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"NBU軟件端： 可通過下文定位方式排查故障","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"環境校驗","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當進行NBU非侵入式備份時，考慮到集羣備份過於重量，可以先通過指定小文件測試環境連通性，保證NBU配置","attrs":{}}]},{"type":"codeblock","attrs":{"lang":null},"content":[{"type":"text","text":"gs_roach uploadmeta --media-destination 'nbu_policy' --metadata-destination '/home/Ruby/meta' --media-type NBU --backup-key '20200903_164332' --nbu-on-remote --media-server 192.168.243.65 --client-port 9000 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server配置無問題，如果存在失敗，則NBU端配置有問題，需要按照後續說明尋求原因。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"故障定義","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"故障排除的第一步是定義問題。在NBU系統的安裝、配置、運行過程中，出現了與正確預期不同的結果，即可認爲是出現了故障；有時候，這要求我們知道正確的情況應該是什麼樣的。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在NBU的交付和使用中常見的故障主要分爲種：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"一是軟件安裝和配置階段，比如軟件安裝不成功、對接不成功、某模塊功能不可用等等，這一階段的錯誤一般沒有具體的錯誤碼，需要結合交付人員的經驗和系統日誌進行排錯，這種故障屬於一次性的故障，在排除之後再次出現的可能性很小；","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"二是在系統部署完成後，數據備份業務上線、備份和恢復任務執行時報錯，比如接入client失敗、存儲單元寫入數據失敗、找不到client服務器等等；這種故障console會提供錯誤碼（error code），維護人員可以根據錯誤進行初步的定位，這種故障屬於日常性的故障，和環境中多種因素有關，備份系統自身之外的業務環境發生細微的變化都有可能導致故障的出現。","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"故障排除過程","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"要排除問題，必須知道發生了什麼錯誤。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤消息通常是指出哪裏出現故障的手段。所以，我們要做的第一件事就是查找錯誤消息。如果在界面上沒有看到錯誤消息，但仍懷疑有問題，請檢查報告和日誌。NetBackup 提供了廣泛的報告和日誌記錄工具，這些工具可提供錯誤消息，直接指出解決方案。日誌還可顯示什麼運行良好以及當發生問題時 NetBackup 正在執行什麼操作。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"綜上，NBU備份與恢復故障排除過程如下：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"1、確認服務器和client運行的是受支持的操作系統或應用版本；具體信息參看NBU兼容性列表；","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"2、復現故障，獲取故障信息；獲取信息的渠道有錯誤碼、Job Details、日誌等；","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"3、根據獲取的信息進行故障定位和排除；","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"故障排除方法","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"使用狀態碼","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"每一個備份和恢復任務都是一個activity，在activity monitor一欄中可以監控到它們。由任務監視看出該任務的ID、執行何種操作、狀態、返回值、Server和Client是誰、通過哪一個Policy和Schedule去執行的。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"具體可顯示多長時間的任務，要看NetBackup全局屬性中的設置。每個任務有以下幾個狀態：","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Queued 任務正在排隊","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Active 任務正在執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Done 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status，在status一欄即可獲取更多的細節信息。找到關鍵錯誤信息（通常是紅色字體或紅色字體的上下文），提煉出關鍵字，在google上搜索，互聯網上有大量的相同錯誤場景和解決辦法。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/53/536f3fc7db12ee384b63e598e61f9d3c.png","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"使用日誌","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"以上使用狀態碼和Job details進行故障排除的辦法停留在初級階段，通常只對簡單故障有效；對於複雜問題，如果解決不了則需要蒐集日誌進行分析。","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在NBU系統中，日誌級別共分爲6級，分別爲0-5，以下爲日誌級別對應的要記錄的信息：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"0：非常重要的少量診斷消息和調試消息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"1：該級別增加詳細的診斷消息和調試消息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"2：增加進度消息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"3：增加提示性轉儲消息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"4：增加功能進入和退出消息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"5：最詳細的信息：記錄所有信息","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"日誌等級調整方式如下：","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"1、console界面調整","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/77/77cc5a76d4c964e49b369d6d49ca8d06.jpeg","alt":null,"title":null,"style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":null,"fromPaste":true,"pastePass":true}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"2、vi 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