{"id":36036,"date":"2023-09-10T19:42:26","date_gmt":"2023-04-11T07:08:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/k8s%e7%9a%84metallb%e5%ae%89%e8%a3%85%e6%ad%a5%e9%aa%a4\/"},"modified":"2024-05-03T23:05:46","modified_gmt":"2024-05-03T15:05:46","slug":"k8s%e7%9a%84metallb%e5%ae%89%e8%a3%85%e6%ad%a5%e9%aa%a4","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/k8s%e7%9a%84metallb%e5%ae%89%e8%a3%85%e6%ad%a5%e9%aa%a4\/","title":{"rendered":"k8s\u7684MetalLB\u5b89\u88c5\u6b65\u9aa4"},"content":{"rendered":"<h1>k8s\u7684MetalLB\u8bbe\u7f6e<\/h1>\n<h3>\u9996\u5148<\/h3>\n<h4>Kubernetes\u662f\u4ec0\u4e48\uff1f<\/h4>\n<p>Kubernetes\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u5e73\u53f0\uff0c\u7528\u4e8e\u81ea\u52a8\u5316\u90e8\u7f72\u3001\u6269\u5c55\u548c\u7ba1\u7406\u5bb9\u5668\u5316\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u8fd9\u4e2a\u7cfb\u7edf\u5728\u4e91\u73af\u5883\u4e2d\u652f\u6301\u5fae\u670d\u52a1\u67b6\u6784\uff0c\u5e76\u63d0\u9ad8\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u53d1\u5e03\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<h4>\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u91cd\u8981\u6027<\/h4>\n<p>\u8d1f\u8f7d\u5747\u8861\u5668\u901a\u8fc7\u5c06\u63a5\u6536\u5230\u7684\u6d41\u91cf\u5206\u53d1\u5230\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u6765\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u7528\u6027\u548c\u54cd\u5e94\u65f6\u95f4\u3002\u5728Kubernetes\u73af\u5883\u4e2d\uff0c\u8d1f\u8f7d\u5747\u8861\u5668\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5c06\u5916\u90e8\u8bbf\u95ee\u8def\u7531\u5230\u670d\u52a1\u548cPod\u4e0a\u3002<\/p>\n<h3>MetalLB\u7684\u6982\u8ff0<\/h3>\n<h4>MetalLB\u662f\u4ec0\u4e48\uff1f<\/h4>\n<p>MetalLB\u662f\u7528\u4e8e\u652f\u6301LoadBalancer\u7c7b\u578b\u670d\u52a1\u7684\u63a7\u5236\u5668\uff0c\u9002\u7528\u4e8e\u672c\u5730Kubernetes\u96c6\u7fa4\uff08\u975e\u4e91\u73af\u5883\uff09\u3002\u5b83\u4f7f\u5f97\u96c6\u7fa4\u80fd\u591f\u81ea\u5305\u542b\uff0c\u5e76\u80fd\u6b63\u786e\u5730\u8def\u7531\u5916\u90e8\u6d41\u91cf\u3002<\/p>\n<h4>\u4ee5\u4e0b\u662fMetalLB\u7684\u4e3b\u8981\u7279\u70b9<\/h4>\n<p>MetalLB\u4e0d\u4f7f\u7528\u72ec\u7279\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u800c\u662f\u4f7f\u7528\u6807\u51c6\u7684\u7b2c\u4e8c\u5c42\u7f51\u7edc\u534f\u8bae\uff08ARP\/NDP\uff09\u6216BGP\u8fdb\u884c\u529f\u80fd\u5b9e\u73b0\u3002\u8fd9\u6837\u53ef\u4ee5\u8f7b\u677e\u96c6\u6210\u5230\u73b0\u6709\u7684\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u4e2d\uff0c\u56e0\u800c\u5e26\u6765\u4e86\u5f88\u591a\u4f18\u52bf\u3002<\/p>\n<h4>MetalLB\u7684\u5b89\u88c5\u8bbe\u7f6e:<\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>MetalLB\u7684\u5b89\u88c5:<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>kubectl apply -f https:\/\/raw.githubusercontent.com\/metallb\/metallb\/v0.9.5\/manifests\/namespace.yaml<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>kubectl apply -f https:\/\/raw.githubusercontent.com\/metallb\/metallb\/v0.9.5\/manifests\/metallb.yaml<\/ol>\n<\/li>\n<\/ol>\n<p>\u521b\u5efaSecret: (\u5982\u679c\u4f7f\u7528BGP\u6a21\u5f0f\uff0c\u53ef\u9009)<br \/>\nkubectl create secret generic -n metallb-system memberlist &#8211;from-literal=secretkey=&#8221;$(openssl rand -base64 128)&#8221;<\/p>\n<p>\u521b\u5efaConfigMap:<br \/>\n\u901a\u8fc7\u8fd9\u4e2a\u914d\u7f6e\u6587\u4ef6\u6765\u6307\u5b9a\u53ef\u7528\u7684IP\u5730\u5740\u8303\u56f4\u3002<br \/>\napiVersion: v1<br \/>\nkind: ConfigMap<br \/>\nmetadata:<br \/>\nnamespace: metallb-system<br \/>\nname: config<br \/>\ndata:<br \/>\nconfig: |<br \/>\naddress-pools:<br \/>\n&#8211; name: default<br \/>\nprotocol: layer2<br \/>\naddresses:<br \/>\n&#8211; 192.168.1.240\/28<\/p>\n<h4>MetalLB\u7684\u5de5\u4f5c\u6a21\u5f0f\uff1a<\/h4>\n<p>MetalLB\u5728\u4e3b\u8981\u76842\u4e2a\u6a21\u5f0f\u4e0b\u8fd0\u884c\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u7b2c2\u5c42\uff08ARP\/NDP\uff09\uff1a\u5728\u6b64\u6a21\u5f0f\u4e0b\uff0cMetalLB\u5c06\u4f7f\u7528ARP\uff08IPv4\uff09\u6216NDP\uff08IPv6\uff09\u5c06\u6d41\u91cf\u8def\u7531\u5230Kubernetes\u670d\u52a1\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>BGP\uff1a\u5728BGP\u6a21\u5f0f\u4e0b\uff0cMetalLB\u5c06\u4f7f\u7528BGP\u5e7f\u544a\u8def\u7531\u4fe1\u606f\u3002<\/p>\n<h4>\u4ea4\u901a\u7684\u64cd\u63a7\u3002 de<\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u7b2c2\u5c42\u6a21\u5f0f\uff1a\u5f53\u670d\u52a1\u88ab\u5206\u914d\u4e86IP\u5730\u5740\u65f6\uff0c\u8be5\u8282\u70b9\u4f1a\u54cd\u5e94ARP\u8bf7\u6c42\u5e76\u5c06\u6d41\u91cf\u8def\u7531\u5230\u8be5\u670d\u52a1\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>BGP\u6a21\u5f0f\uff1a\u5efa\u7acb\u4e0eBGP\u90bb\u5c45\uff08\u901a\u5e38\u662f\u7f51\u7edc\u8def\u7531\u5668\uff09\u7684\u4f1a\u8bdd\uff0c\u5e76\u5e7f\u544a\u4e0e\u670d\u52a1\u7684IP\u5730\u5740\u76f8\u5173\u7684\u8def\u7531\u4fe1\u606f\u3002\u8fd9\u6837\u53ef\u4ee5\u6b63\u786e\u5730\u5c06\u6d41\u91cf\u8def\u7531\u5230\u8be5\u670d\u52a1\u3002<\/p>\n<h4>\u5176\u4ed6\u529f\u80fd\uff1a<\/h4>\n<p>IP\u30a2\u30c9\u30ec\u30b9\u306e\u5171\u6709: \u8907\u6570\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u540c\u3058IP\u30a2\u30c9\u30ec\u30b9\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u7570\u306a\u308b\u30dd\u30fc\u30c8\u3067\u52d5\u4f5c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>IP\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066: IP\u30a2\u30c9\u30ec\u30b9\u306f\u81ea\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u304b\u3001\u307e\u305f\u306f\u7279\u5b9a\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u9759\u7684\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u8d1f\u8f7d\u5747\u8861\u673a\u5236<\/h3>\n<h4>Kubernetes\u4e2dLoadBalancer\u670d\u52a1\u7684\u6982\u8ff0<\/h4>\n<p>Kubernetes\u7684LoadBalancer\u7c7b\u578b\u7684\u670d\u52a1\u63d0\u4f9b\u4e86\u5c06\u5916\u90e8\u6d41\u91cf\u8def\u7531\u5230\u96c6\u7fa4\u5185\u7279\u5b9a\u670d\u52a1\u7684\u529f\u80fd\u3002\u5728\u4e91\u63d0\u4f9b\u5546\u4e2d\uff0c\u901a\u5e38\u4f1a\u5229\u7528\u8d1f\u8f7d\u5747\u8861\u5668\u6765\u5b9e\u73b0\u6b64\u529f\u80fd\uff0c\u800c\u5728\u672c\u5730\u73af\u5883\u4e2d\uff0c\u50cfMetalLB\u8fd9\u6837\u7684\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u626e\u6f14\u8fd9\u4e2a\u89d2\u8272\u3002<\/p>\n<h4>MetalLB\u6240\u89e3\u51b3\u7684\u95ee\u9898<\/h4>\n<p>\u5728\u79c1\u6709\u4e91\u73af\u5883\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u65e0\u6cd5\u4f7f\u7528LoadBalancer\u7c7b\u578b\u7684\u670d\u52a1\uff0c\u56e0\u6b64\u5916\u90e8\u6d41\u91cf\u7684\u5e73\u8861\u548c\u8def\u7531\u6210\u4e3a\u4e00\u4e2a\u95ee\u9898\u3002MetalLB\u586b\u8865\u4e86\u8fd9\u4e2a\u7a7a\u767d\uff0c\u5e76\u5728\u79c1\u6709\u4e91\u4e2d\u5145\u5f53\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u529f\u80fd\u3002<\/p>\n<h3>\u5728Layer 2\u6a21\u5f0f\u4e0b\u4f7f\u7528MetalLB\u3002<\/h3>\n<h4>\u7b2c\u4e8c\u5c42\u6a21\u5f0f\u7684\u673a\u5236<\/h4>\n<p>\u52d5\u4f5c: \u3053\u306e\u30e2\u30fc\u30c9\u306f\u3001\u3088\u308a\u5358\u7d14\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u9020\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002MetalLB\u306f\u3001ARP (Address Resolution Protocol) \u3084NDP (Neighbor Discovery Protocol) \u3092\u4f7f\u3063\u3066\u3001\u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u306e\u30b5\u30fc\u30d3\u30b9IP\u306e\u30a2\u30ca\u30a6\u30f3\u30b9\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u306e\u30e2\u30fc\u30c9\u3067\u306f\u3001\u7269\u7406\u7684\u306aLayer 2\u30c9\u30e1\u30a4\u30f3\u5185\u3067\u306e\u307f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f7f\u7528\u30b7\u30fc\u30f3: \u4e3b\u306b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306a\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3084\u30b7\u30f3\u30d7\u30eb\u306a\u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u74b0\u5883\u306a\u3069\u3001\u5358\u4e00\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u30c9\u30e1\u30a4\u30f3\u5185\u3067\u306e\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5236\u9650: \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306fLayer 2\u30c9\u30e1\u30a4\u30f3\u306b\u5236\u9650\u3055\u308c\u308b\u305f\u3081\u3001\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u306f\u5411\u3044\u3066\u3044\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0\u6a5f\u80fd\u306f\u57fa\u672c\u7684\u306a\u3082\u306e\u306b\u9650\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\u4f7f\u7528MetalLB\u5728BGP\u6a21\u5f0f\u4e0b\u3002<\/h3>\n<p>\u52d5\u4f5c: BGP (Border Gateway Protocol) \u30e2\u30fc\u30c9\u306f\u3001\u3088\u308a\u8907\u96d1\u3067\u5e83\u7bc4\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30e2\u30fc\u30c9\u3067\u306f\u3001BGP\u3092\u4f7f\u7528\u3057\u3066\u3001\u30eb\u30fc\u30bf\u30fc\u9593\u3067\u30b5\u30fc\u30d3\u30b9\u306eIP\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u52d5\u7684\u306b\u4ea4\u63db\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084AS (Autonomous Systems) \u9593\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u52b9\u679c\u7684\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f7f\u7528\u30b7\u30fc\u30f3: \u30af\u30e9\u30a6\u30c9\u74b0\u5883\u3001\u5927\u898f\u6a21\u306a\u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u74b0\u5883\u3001\u307e\u305f\u306f\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3092\u8de8\u308b\u74b0\u5883\u306a\u3069\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u898f\u6a21\u304c\u5927\u304d\u304f\u3001\u8907\u6570\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5229\u70b9: BGP\u30e2\u30fc\u30c9\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d5\u30ed\u30fc\u306e\u9ad8\u5ea6\u306a\u5236\u5fa1\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5197\u9577\u6027\u3001\u305d\u3057\u3066\u30de\u30eb\u30c1\u30d1\u30b9\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u307e\u305f\u3001ISP\u3084\u5927\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u306e\u9023\u643a\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>\u83b7\u53d6\u548c\u8bbe\u7f6eIP\u5730\u5740<\/h4>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5168\u7403IP\u5730\u5740\u662f\u4ece\u4e92\u8054\u7f51\u670d\u52a1\u63d0\u4f9b\u5546\uff08ISP\uff09\u6216\u6570\u636e\u4e2d\u5fc3\u63d0\u4f9b\u5546\u5904\u83b7\u53d6\u7684\u3002\u5c06\u83b7\u53d6\u7684IP\u5730\u5740\u96c6\u6210\u5230MetalLB\u7684\u914d\u7f6e\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u5916\u90e8\u6d41\u91cf\u80fd\u591f\u6b63\u786e\u5730\u8fdb\u884c\u8def\u7531\u3002<\/p>\n<h3>\u5c06DNS\u4e0e\u96c6\u6210<\/h3>\n<h4>\u57df\u540d\u7cfb\u7edf\uff08DNS\uff09\u7684\u89d2\u8272\u548c\u91cd\u8981\u6027\u3002<\/h4>\n<p>DNS\u662f\u5c06\u7528\u6237\u53cb\u597d\u7684\u57df\u540d\u8f6c\u6362\u4e3aIP\u5730\u5740\u7684\u7cfb\u7edf\u3002\u901a\u8fc7\u6b63\u786e\u8bbe\u7f6eDNS\u8bb0\u5f55\uff0c\u7ec8\u7aef\u7528\u6237\u53ef\u4ee5\u4f7f\u7528\u57df\u540d\u8f7b\u677e\u8bbf\u95ee\u670d\u52a1\u3002<\/p>\n<h4>\u5168\u7403\u540d\u79f0\u89e3\u6790\u8bbe\u7f6e\uff08\u9009\u9879\uff09<\/h4>\n<p>\u8981\u8bbe\u7f6e\u5168\u7403\u540d\u79f0\u89e3\u6790\uff0c\u60a8\u9700\u8981\u5728DNS\u63d0\u4f9b\u5546\uff08\u4f8b\u5982\uff1aAWS Route 53\u3001Google 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