{"id":207576,"date":"2025-07-08T12:34:49","date_gmt":"2025-07-08T04:34:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207576\/"},"modified":"2025-07-08T12:34:49","modified_gmt":"2025-07-08T04:34:49","slug":"%e9%80%9a%e8%bf%87websocket%e5%b0%86kubernetes%e6%97%a5%e5%bf%97%e6%9a%b4%e9%9c%b2%e5%88%b0%e6%b5%8f%e8%a7%88%e5%99%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207576\/","title":{"rendered":"\u901a\u8fc7websocket\u5c06kubernetes\u65e5\u5fd7\u66b4\u9732\u5230\u6d4f\u89c8\u5668"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u901a\u8fc7websocket\u5c06kubernetes\u65e5\u5fd7\u66b4\u9732\u5230\u6d4f\u89c8\u5668<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-23 18:45:29<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u901a\u8fc7websocket\u5c06kubernetes\u65e5\u5fd7\u66b4\u9732\u5230\u6d4f\u89c8\u5668\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u5c1d\u8bd5\u5728 kubernetes \u4e2d\u4f7f\u7528 sidecar \u6a21\u5f0f\u6765\u521b\u5efa\u65e5\u5fd7 sidecar \u6765\u516c\u5f00\u7279\u5b9a\u7684\u5bb9\u5668\u65e5\u5fd7\u3002\u6211\u6b63\u5728\u4f7f\u7528 kubernetes \u5ba2\u6237\u7aef\u4ece kubernetes api \u83b7\u53d6\u65e5\u5fd7\u5e76\u901a\u8fc7 websocket \u53d1\u9001\u51fa\u53bb\u3002\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

func serveWs(w http.ResponseWriter, r *http.Request) {\n    w.Header().Set(\"Access-Control-Allow-Origin\", \"*\")\n    conn, err := upgrader.Upgrade(w, r, nil)\n    if err != nil {\n        if _, ok := err.(websocket.HandshakeError); !ok {\n            log.Println(err)\n        }\n        return\n    }\n\n    defer conn.Close()\n\n    logsClient, err := InitKubeLogsClient(config.InCluster)\n    if err != nil {\n        log.Fatalln(err)\n    }\n\n    stream, err := logsClient.GetLogs(config.Namespace, config.PodName, config.ContainerName)\n    if err != nil {\n        log.Fatalln(err)\n    }\n    defer stream.Close()\n    reader := bufio.NewReader(stream)\n\n    for {\n        line, err := reader.ReadString('\\n')\n        if err != nil {\n            log.Fatalln(err)\n        }\n        conn.WriteMessage(websocket.TextMessage, []byte(line))\n    }\n}<\/pre>\n
\u6211\u4f7f\u7528 https:\/\/github.com\/gorilla\/websocket \u4f5c\u4e3a websocket \u5e93\u3002\u5728\u6d4f\u89c8\u5668\u4e0a<\/p>\n
\u8fd9\u662f\u505a\u6211\u60f3\u505a\u7684\u4e8b\u7684\u6700\u4f73\u65b9\u5f0f\u5417\uff1f\u6709\u6ca1\u6709\u66f4\u597d\u7684\u65b9\u6cd5\u5c06\u65e5\u5fd7 api \u4ece k8s \u516c\u5f00\u5230 websocket\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u5c06\u6211\u7684\u6700\u7ec8\u4ee3\u7801\u653e\u5728\u8fd9\u91cc\uff0c\u611f\u8c22@peter \u7684\u63d0\u793a\uff1a<\/p>\n
func serveWs(w http.ResponseWriter, r *http.Request) {\n    w.Header().Set(\"Access-Control-Allow-Origin\", \"*\")\n    conn, err := upgrader.Upgrade(w, r, nil)\n    if err != nil {\n        if _, ok := err.(websocket.HandshakeError); !ok {\n            log.Println(err)\n        }\n        return\n    }\n\n    log.Println(\"create new connection\")\n\n    defer func() {\n        conn.Close()\n        log.Println(\"connection close\")\n    }()\n\n    logsClient, err := InitKubeLogsClient(config.InCluster)\n    if err != nil {\n        log.Println(err)\n        return\n    }\n\n    stream, err := logsClient.GetLogs(config.Namespace, config.PodName, config.ContainerName)\n    if err != nil {\n        log.Println(err)\n        return\n    }\n    defer stream.Close()\n    reader := bufio.NewReaderSize(stream, 16)\n    lastLine := \"\"\n    for {\n        data, isPrefix, err := reader.ReadLine()\n        if err != nil {\n            log.Println(err)\n            return\n        }\n\n        lines := strings.Split(string(data), \"\\r\")\n\n        length := len(lines)\n\n        if len(lastLine) > 0 {\n            lines[0] = lastLine + lines[0]\n            lastLine = \"\"\n        }\n\n        if isPrefix {\n            lastLine = lines[length-1]\n            lines = lines[:(length - 1)]\n        }\n\n        for _, line := range lines {\n            if err := conn.WriteMessage(websocket.TextMessage, []byte(line)); err != nil {\n                log.Println(err)\n                return\n            }\n        }\n    }\n}<\/pre>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u901a\u8fc7websocket\u5c06kubernetes\u65e5\u5fd7\u66b4\u9732\u5230\u6d4f\u89c8\u5668\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207576","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207576"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207576\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}