{"id":20012,"date":"2026-04-13T16:51:01","date_gmt":"2026-04-13T08:51:01","guid":{"rendered":"https:\/\/blog.ywdevops.cn\/?p=20012"},"modified":"2026-05-20T14:21:46","modified_gmt":"2026-05-20T06:21:46","slug":"k3s-2","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2026\/04\/13\/k3s-2\/","title":{"rendered":"k3s\u9ad8\u53ef\u7528\u5b9e\u73b0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5bf9K3s \u96c6\u7fa4\u6765\u8bf4\uff0c\u6700\u4f73\u65b9\u6848\u5c31\u662f\uff1aMetalLB (Layer2) + \u5185\u7f6e Traefik\uff0c\u53ef\u66ff\u6362\u4f20\u7edf\u7684nginx+keepalived<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\uff1aMetalLB\u8fd8\u652f\u6301L3\u6a21\u5f0f\uff0c\u4e5f\u5c31\u662fBGP\uff0c\u6b64\u6a21\u5f0f\u9700\u8981\u8def\u7531\u5668\u6216\u4ea4\u6362\u673a\u652f\u6301<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4ec0\u4e48 K3s \u9002\u5408\u8fd9\u4e2a\u7ec4\u5408\uff1f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Traefik \u662f K3s \u9ed8\u8ba4\u5185\u7f6e Ingress<\/strong><\/li>\n\n\n\n<li>\u5b89\u88c5 K3s \u65f6\u81ea\u52a8\u88c5\u4e0a\uff0c<strong>\u4e0d\u7528\u989d\u5916\u90e8\u7f72<\/strong><\/li>\n\n\n\n<li>\u8f7b\u91cf\u3001\u81ea\u52a8\u53d1\u73b0\u670d\u52a1\u3001\u52a8\u6001\u914d\u7f6e\u3001\u4e0d\u7528 reload<\/li>\n\n\n\n<li>\u652f\u6301 HTTP\/HTTPS\u3001TCP\/UDP\u3001gRPC\u3001websocket \u7b49<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">K3s \u81ea\u5e26\u7684 ServiceLB\uff08Klipper LB\uff09\u5f88\u5f31\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u80fd\u7528\u8282\u70b9 IP\uff0c<strong>\u6ca1\u6709\u771f\u6b63 VIP<\/strong><\/li>\n\n\n\n<li>\u6240\u6709\u8282\u70b9 80\/443 \u88ab\u5360\u7528<\/li>\n\n\n\n<li>\u9ad8\u53ef\u7528\u5dee\u3001\u4e0d\u80fd\u4f18\u96c5\u5207\u6362<\/li>\n\n\n\n<li>\u751f\u4ea7\u73af\u5883<strong>\u4e0d\u63a8\u8350<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">kube-system\u547d\u4ee4\u7a7a\u95f4\u4e0b\u7684svclb-traefik\u5c31\u662f\u81ea\u5e26\u7684servicelb,\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"651\" height=\"244\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/2-2.png\" alt=\"\" class=\"wp-image-20017\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/2-2.png 651w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/2-2-300x112.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/2-2-600x225.png 600w\" sizes=\"auto, (max-width: 651px) 100vw, 651px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">MetalLB L2 + Traefik = \u5b8c\u7f8e\u642d\u914d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>MetalLB \u7ed9 Traefik \u4e00\u4e2a\u7a33\u5b9a VIP<\/strong>\uff08\u6bd4\u5982 192.168.1.200\uff09, Metallb\u5c31\u8d1f\u8d23\u5206\u914dIP\uff0c\u5176\u4f59\u4e0d\u7ba1<\/li>\n\n\n\n<li>VIP \u9ad8\u53ef\u7528\u81ea\u52a8\u6f02\u79fb<\/li>\n\n\n\n<li><strong>Traefik \u505a 7 \u5c42\u7f51\u5173<\/strong>\uff08\u57df\u540d\u3001HTTPS\u3001\u8def\u7531\u3001\u9650\u6d41\uff09<\/li>\n\n\n\n<li>\u5b8c\u5168 K8s \u539f\u751f\u3001\u58f0\u660e\u5f0f\u3001\u96f6\u7ef4\u62a4<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-purple-color\">\u642d\u5efa<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u5728\u4e09\u4e2aMaster\u8282\u70b9\u7981\u7528\u81ea\u5e26\u7684servicelb\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#servicelb \u662f K3s \u7684\u63a7\u5236\u5e73\u9762\u7ec4\u4ef6\uff0c\u53ea\u8fd0\u884c\u5728 master \u8282\u70b9\uff0ck3s server\uff08master\uff09\uff1a\u8d1f\u8d23\u542f\u52a8servicelb\u3001traefik\u3001coredns \u7b49\u6838\u5fc3\u63d2\u4ef6\nvim \/etc\/systemd\/system\/k3s.service\n--disable=servicelb     #\u6dfb\u52a0\u7684\u53c2\u6570<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"220\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/3-2.png\" alt=\"\" class=\"wp-image-20019\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/3-2.png 650w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/3-2-300x102.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/3-2-600x203.png 600w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7981\u7528\u540e\u5df2\u7ecf\u770b\u4e0d\u5230svclb-traefik\u5f00\u5934\u7684Pod\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"208\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/4-1.png\" alt=\"\" class=\"wp-image-20022\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/4-1.png 650w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/4-1-300x96.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/4-1-600x192.png 600w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001\u5b89\u88c5 MetalLB\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl apply -f https:\/\/raw.githubusercontent.com\/metallb\/metallb\/main\/config\/manifests\/metallb-native.yaml<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u4e24\u4e2a\u955c\u50cf\u9700\u8981\u5148\u4e0b\u8f7d\u56de\u6765\u5230\u672c\u5730\uff0c<strong>\u5bfc\u5165\u5230\u5404\u4e2a\u8282\u70b9\u4e0a<\/strong>\uff0c\u5426\u5219\u53ef\u80fd\u4e0d\u6210\u529f\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>quay.io\/metallb\/controller:main\nquay.io\/metallb\/speaker:main<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"208\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/5-1.png\" alt=\"\" class=\"wp-image-20024\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/5-1.png 653w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/5-1-300x96.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/5-1-600x191.png 600w\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">controller\u53ea\u5728\u4e00\u4e2a\u8282\u70b9\u4e0a\u6709\uff0cspeaker\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u90fd\u6709\u90e8\u7f72\uff0ccontoller\u8d1f\u8d23\u5206\u914dIP\uff0cspeaker\u8d1f\u8d23\u5e7f\u64adIP\uff0ccontroller\u662fDeployment\u7ba1\u7406\uff0cspeaker\u901a\u8fc7DaemonSet\u7ba1\u7406<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">controller\u662fMetalLB \u7684<strong>\u603b\u6307\u6325<\/strong>\uff0c\u7ba1\u5206\u914d\u3001\u7ba1\u8c03\u5ea6\u3001\u5f53 \u201c\u5927\u8111\u201d\uff0c\u4e3b\u8981\u529f\u80fd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ba1\u7406\u4f60\u914d\u7f6e\u7684 IP \u5730\u5740\u6c60\uff0c\u6bd4\u5982\u4f60\u914d\u7f6e\u4e86 192.168.1.200-210\uff0ccontroller \u77e5\u9053\u8fd9\u6bb5 IP \u5f52 MetalLB \u7ba1<\/li>\n\n\n\n<li>\u76d1\u542c\u6240\u6709 LoadBalancer \u7c7b\u578b Service\uff0c\u6bd4\u5982 traefik \u8fd9\u4e2a Service \u4e00\u521b\u5efa\uff0ccontroller \u5c31\u4f1a\u770b\u5230<\/li>\n\n\n\n<li>\u7ed9 Service \u5206\u914d\u4e00\u4e2a\u5916\u90e8 IP\uff08VIP\uff09\uff0c\u4ece\u5730\u5740\u6c60\u91cc\u62ff\u4e00\u4e2a IP \u7ed9 Service<\/li>\n\n\n\n<li>\u8bb0\u5f55\u54ea\u4e2a IP \u5206\u7ed9\u4e86\u54ea\u4e2a\u670d\u52a1\uff0c<strong>\u9632\u6b62 IP \u51b2\u7a81<\/strong><\/li>\n\n\n\n<li>\u63a7\u5236\u6574\u4e2a MetalLB \u7684\u72b6\u6001<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">speaker(\u53d1\u8a00\u4eba)\uff0c\u6bcf\u4e2a\u8282\u70b9\u90fd\u8dd1\u4e00\u4e2a\uff08master + worker\uff09\uff0c\u5bf9\u5916\u558a\u8bdd\u3001\u544a\u8bc9\u7f51\u7edc \u201c\u8fd9\u4e2a IP \u662f\u6211\u7684\u201d\u3001\u9ad8\u53ef\u7528\u5207\u6362\uff0c\u4e3b\u8981\u529f\u80fd\uff1a <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u5916\u53d1\u9001 ARP \u5e7f\u64ad\uff0c\u544a\u8bc9\u6574\u4e2a\u5c40\u57df\u7f51\uff1a\u201c192.168.1.200 \u8fd9\u4e2a VIP \u5728\u6211\u8fd9\u53f0\u673a\u5668\uff01\u201d<\/li>\n\n\n\n<li>\u540c\u4e00\u65f6\u95f4\u53ea\u6709\u4e00\u4e2a speaker \u662f leader\uff0c\u53ea\u6709\u4e00\u4e2a\u8282\u70b9\u8d1f\u8d23\u54cd\u5e94 ARP \u2192 \u8fd9\u4e2a\u8282\u70b9\u5c31\u662f<strong>\u6d41\u91cf\u5165\u53e3<\/strong><\/li>\n\n\n\n<li>\u9ad8\u53ef\u7528\u81ea\u52a8\u5207\u6362\uff0c\u5982\u679c\u5f53\u524d leader \u8282\u70b9\u6302\u4e86\uff0c\u53e6\u4e00\u4e2a\u8282\u70b9\u7684 speaker \u7acb\u523b\u9876\u4e0a\uff0c\u544a\u8bc9\u7f51\u7edc\uff1a\u201cVIP \u98d8\u5230\u6211\u8fd9\u4e86\uff01\u201d<\/li>\n\n\n\n<li>\u786e\u4fdd\u6d41\u91cf\u80fd\u8fdb\u5165\u96c6\u7fa4<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\uff1a\u67e5\u770b\u5f53\u524d\u54ea\u4e2a\u8282\u70b9\u662fspeaker\u7684leader\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -s http:\/\/&lt;\u8282\u70b9IP&gt;:7472\/metrics | grep -i metallb_speaker_announced\n#\u8f93\u51fa\u4e2d\u770b\u5230metallb_speaker_announced{ip=\"192.168.51.72\",node=\"k3s-master01\",protocol=\"layer2\"\uff0c\u8bf4\u660e\u6b64\u65f6k3s-master01\u5c31\u662fleader\u8282\u70b9<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728metallb-system\u547d\u540d\u7a7a\u95f4\u4e0b\u8fd8\u6709\u4e00\u4e2aservice\uff0c\u540d\u5b57\u4e3ametallb-webhook-service\uff0c\u7c7b\u578b\u4e3aClusterIP\uff0c\u6b64service\u662f <strong>MetalLB \u7684\u51c6\u5165\u63a7\u5236 Webhook \u670d\u52a1<\/strong>\uff0c\u6838\u5fc3\u4f5c\u7528\u662f<strong>\u6821\u9a8c\u3001\u4fee\u6539\u4f60\u63d0\u4ea4\u7684 MetalLB \u81ea\u5b9a\u4e49\u8d44\u6e90\uff08CRD\uff09\uff0c\u4fdd\u8bc1\u914d\u7f6e\u5408\u6cd5\u3001\u96c6\u7fa4\u5b89\u5168<\/strong>\uff0c\u4e3b\u8981\u529f\u80fd\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u68c0\u67e5\u4f60\u914d\u7f6e\u7684 IP \u5730\u5740\u6c60\u662f\u5426\u5408\u6cd5\uff08\u6bd4\u5982 IP \u6bb5\u683c\u5f0f\u3001\u662f\u5426\u91cd\u53e0\u3001\u662f\u5426\u8d85\u51fa\u7f51\u6bb5\uff09<\/li>\n\n\n\n<li>\u68c0\u67e5 BGP \u914d\u7f6e\u662f\u5426\u6b63\u786e\uff08ASN\u3001\u90bb\u5c45\u5730\u5740\u3001\u8def\u7531\u89c4\u5219\uff09<\/li>\n\n\n\n<li>\u68c0\u67e5 L2 \u5ba3\u544a\u914d\u7f6e\u662f\u5426\u7b26\u5408\u89c4\u8303<\/li>\n\n\n\n<li>\u62e6\u622a\u975e\u6cd5\u914d\u7f6e\uff0c\u907f\u514d\u9519\u8bef\u914d\u7f6e\u5bfc\u81f4 MetalLB \u5d29\u6e83\u3001IP \u51b2\u7a81\u3001\u7f51\u7edc\u6545\u969c<\/li>\n\n\n\n<li>\u7ed9\u4f60\u6ca1\u5199\u5168\u7684\u914d\u7f6e\u81ea\u52a8\u8865\u5168\u9ed8\u8ba4\u503c\uff08\u6bd4\u5982\u81ea\u52a8\u8bbe\u7f6e\u5408\u7406\u7684 ARP \u5ba3\u544a\u95f4\u9694\uff09<\/li>\n\n\n\n<li>\u7edf\u4e00\u914d\u7f6e\u89c4\u8303\uff0c\u51cf\u5c11\u4eba\u4e3a\u5931\u8bef<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u914d\u7f6e MetalLB L2 \u5730\u5740\u6c60\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># metallb-config.yaml\napiVersion: metallb.io\/v1beta1\nkind: IPAddressPool\nmetadata:\n  name: default\n  namespace: metallb-system\nspec:\n  addresses:\n  - 192.168.51.72-192.168.51.75 # \u4f60\u7684\u5185\u7f51VIP\u6bb5\n\n---\napiVersion: metallb.io\/v1beta1\nkind: L2Advertisement\nmetadata:\n  name: default\n  namespace: metallb-system<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl apply -f metallb-config.yaml<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\u540e\u53ef\u4ee5\u770b\u5230traefik\u5df2\u7ecf\u62ff\u5230\u4e86VIP\u5730\u5740\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"654\" height=\"163\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/6-1.png\" alt=\"\" class=\"wp-image-20033\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/6-1.png 654w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/6-1-300x75.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/6-1-600x150.png 600w\" sizes=\"auto, (max-width: 654px) 100vw, 654px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7describe\u53ef\u4ee5\u770b\u5230VIP\u5df2\u7ecf\u5199\u5165\u5230<code>status.loadBalancer.ingress<\/code> \u5b57\u6bb5\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"699\" height=\"409\" src=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/7-2.png\" alt=\"\" class=\"wp-image-20039\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/7-2.png 699w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/7-2-300x176.png 300w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2026\/04\/7-2-600x351.png 600w\" sizes=\"auto, (max-width: 699px) 100vw, 699px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u4e86VIP\u540e\uff0c\u5b8c\u6574\u7684\u7528\u6237\u6d41\u91cf\u8bf7\u6c42\u6d41\u7a0b\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6d4f\u89c8\u5668 \/ \u5ba2\u6237\u7aef\u8bbf\u95ee\u57df\u540d \u2192 DNS \u89e3\u6790\u5230 <strong>MetalLB \u5206\u914d\u7684 VIP<\/strong><\/li>\n\n\n\n<li>MetalLB \u8d1f\u8d23 \u201c\u5f15\u6d41\u5230\u96c6\u7fa4\u201d\uff0c\u628a\u6d41\u91cf\u53d1\u5230 <strong>\u67d0\u4e00\u53f0 Node<\/strong>\uff08Leader \u8282\u70b9\uff09<\/li>\n\n\n\n<li>\u8fdb\u5165 Node \u540e\uff1a\u901a\u8fc7\u8282\u70b9\u7684 iptables\/IPVS \u76f4\u63a5\u8f6c\u53d1\u5230 Traefik Pod<\/li>\n\n\n\n<li>Traefik Pod \u5904\u7406\u4e03\u5c42\u8def\u7531\uff1aTraefik Pod \u6536\u5230\u8bf7\u6c42\uff0c\u770b Host\/Path \u7b49\u89c4\u5219\uff0c\u8f6c\u53d1\u5230 <strong>\u5bf9\u5e94\u4e1a\u52a1\u7684 ClusterIP 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