{"id":3389,"date":"2026-10-29T11:00:00","date_gmt":"2026-10-29T03:00:00","guid":{"rendered":"https:\/\/www.ygcloud.com\/knowledge\/?p=3389"},"modified":"2026-10-29T11:49:23","modified_gmt":"2026-10-29T03:49:23","slug":"two-server-high-availability","status":"publish","type":"post","link":"https:\/\/www.ygcloud.com\/knowledge\/3389\/","title":{"rendered":"\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u9ad8\u53ef\u7528\uff1aKeepalived\u3001VIP \u4e0e\u5207\u6362\u6f14\u7ec3"},"content":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1a\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u505a\u9ad8\u53ef\u7528\uff0c\u6838\u5fc3\u4e0d\u662f\u88c5\u4e2a Keepalived\uff0c\u800c\u662f\u89e3\u51b3\u56db\u4ef6\u4e8b\uff1a\u6d6e\u52a8 IP \u80fd\u4e0d\u80fd\u7528\u3001\u5065\u5eb7\u68c0\u67e5\u51c6\u4e0d\u51c6\u3001\u8111\u88c2\u600e\u4e48\u9632\u3001\u6570\u636e\u600e\u4e48\u540c\u6b65\u3002\u4e91\u73af\u5883\u7ecf\u5e38\u4e0d\u652f\u6301\u7ec4\u64ad\u548c\u514d\u8d39 ARP\uff0c\u5f88\u591a\u65b9\u6848\u6700\u540e\u8981\u843d\u5230\u4e91\u8d1f\u8f7d\u5747\u8861\u6216 DNS \u5207\u6362\u4e0a\u3002<\/p>\n<p>\u5148\u660e\u786e\u76ee\u6807\uff1a<\/p>\n<ul>\n<li><strong>RTO<\/strong>\uff1a\u6545\u969c\u540e\u591a\u4e45\u6062\u590d\uff0c30 \u79d2\u548c 5 \u5206\u949f\u65b9\u6848\u5b8c\u5168\u4e0d\u540c<\/li>\n<li><strong>RPO<\/strong>\uff1a\u80fd\u63a5\u53d7\u4e22\u591a\u5c11\u6570\u636e\uff0c\u51b3\u5b9a\u8981\u4e0d\u8981\u540c\u6b65\u590d\u5236<\/li>\n<li><strong>\u8303\u56f4<\/strong>\uff1a\u53ea\u662f\u5165\u53e3\u9ad8\u53ef\u7528\uff0c\u8fd8\u662f\u5e94\u7528\u3001\u6570\u636e\u5e93\u90fd\u8981<\/li>\n<\/ul>\n<h2 id=\"\u4e24\u79cd\u5e38\u89c1\u67b6\u6784\">\u4e24\u79cd\u5e38\u89c1\u67b6\u6784<\/h2>\n<p><strong>\u4e3b\u5907<\/strong>\uff1a\u4e00\u53f0\u8dd1\u4e1a\u52a1\uff0c\u4e00\u53f0\u5f85\u547d\uff0c\u6545\u969c\u65f6\u5207 VIP \u6216 DNS\u3002\u7b80\u5355\u3001\u6210\u672c\u4f4e\uff0c\u4f46\u5907\u673a\u5e73\u65f6\u95f2\u7740\u3002<\/p>\n<p><strong>\u53cc\u6d3b<\/strong>\uff1a\u4e24\u53f0\u90fd\u8dd1\u4e1a\u52a1\uff0c\u524d\u9762\u7528\u8d1f\u8f7d\u5747\u8861\u5206\u6d41\u3002\u8d44\u6e90\u5229\u7528\u7387\u9ad8\uff0c\u4f46\u8981\u6c42\u5e94\u7528\u65e0\u72b6\u6001\u3001\u6570\u636e\u5c42\u80fd\u5904\u7406\u5e76\u53d1\u5199\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d0fd7d26a525017.jpg\" alt=\"\u4e3b\u5907\u670d\u52a1\u5668\u4e0e\u6d6e\u52a8 VIP\u3001\u5fc3\u8df3\u94fe\u8def\u7684\u67b6\u6784\" class=\"wp-image-3386\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d0fd7d26a525017.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d0fd7d26a525017-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d0fd7d26a525017-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/d0fd7d26a525017-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>\u5148\u5b9a\u4e3b\u5907\u8fd8\u662f\u53cc\u6d3b\uff0c\u518d\u8c08 Keepalived \u548c VIP\u3002<\/figcaption><\/figure>\n<h2 id=\"keepalived-\u600e\u4e48\u505a\">Keepalived \u600e\u4e48\u505a<\/h2>\n<pre><code>vrrp_instance VI_1 {\n    state BACKUP\n    interface eth0\n    virtual_router_id 51\n    priority 100\n    advert_int 1\n    authentication {\n        auth_type PASS\n        auth_pass \u6362\u6210\u957f\u5bc6\u7801\n    }\n    virtual_ipaddress {\n        10.0.0.100\/24\n    }\n}<\/code><\/pre>\n<p>\u4e24\u53f0\u914d\u7f6e\u4e00\u6837\uff0c\u4f18\u5148\u7ea7\u4e0d\u540c\uff1b\u4f18\u5148\u7ea7\u9ad8\u7684\u6301\u6709 VIP\uff0c\u5fc3\u8df3\u65ad\u4e86\u5c31\u5207\u6362\u3002\u6ce8\u610f <code>virtual_router_id<\/code> \u4e0d\u80fd\u548c\u540c\u7f51\u6bb5\u5176\u4ed6\u96c6\u7fa4\u51b2\u7a81\uff0c\u5bc6\u7801\u522b\u7528\u9ed8\u8ba4\u503c\u3002<\/p>\n<h2 id=\"\u4e91\u4e0a-vip-\u7684\u5751\">\u4e91\u4e0a VIP \u7684\u5751<\/h2>\n<p>\u4f20\u7edf IDC \u91cc Keepalived \u9760 VRRP \u7ec4\u64ad\u548c\u514d\u8d39 ARP \u6f02\u79fb IP\uff1b\u4e91\u7f51\u7edc\u901a\u5e38\u4e0d\u652f\u6301\u7ec4\u64ad\uff0c\u6216\u8005\u4e0d\u5141\u8bb8\u968f\u610f\u53d1 ARP\u3002\u7ed3\u679c\u5c31\u662f\uff1a\u914d\u7f6e\u770b\u8d77\u6765\u6b63\u5e38\uff0cVIP \u5207\u4e0d\u8fc7\u53bb\uff0c\u6216\u8005\u5207\u8fc7\u53bb\u56de\u4e0d\u6765\u3002<\/p>\n<ul>\n<li>\u5148\u786e\u8ba4\u4e91\u5382\u5546\u662f\u5426\u652f\u6301\u201c\u6d6e\u52a8 IP\/\u9ad8\u53ef\u7528 IP\u201d<\/li>\n<li>\u4e0d\u652f\u6301\u5c31\u7528\u4e91\u8d1f\u8f7d\u5747\u8861\uff0c\u6216 DNS + \u5065\u5eb7\u68c0\u67e5\u5207\u6362<\/li>\n<li>\u7528 DNS \u5207\u6362\u65f6\u628a TTL \u8c03\u4f4e\uff0c\u63a5\u53d7\u5206\u949f\u7ea7 RTO<\/li>\n<\/ul>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/a20594e25a1044c.jpg\" alt=\"\u6d6e\u52a8 IP \u4ece\u6545\u969c\u8282\u70b9\u5207\u5230\u5907\u7528\u8282\u70b9\" class=\"wp-image-3387\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/a20594e25a1044c.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/a20594e25a1044c-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/a20594e25a1044c-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/a20594e25a1044c-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>\u4e91\u7f51\u7edc\u53ef\u80fd\u4e0d\u652f\u6301 VRRP\uff0cVIP \u5207\u4e0d\u8fc7\u53bb\u5c31\u5148\u67e5\u7f51\u7edc\u80fd\u529b\u3002<\/figcaption><\/figure>\n<h2 id=\"\u5065\u5eb7\u68c0\u67e5\">\u5065\u5eb7\u68c0\u67e5<\/h2>\n<p>\u522b\u53ea ping \u4e3b\u673a\u3002\u4e3b\u673a\u6d3b\u7740\u4f46\u5e94\u7528\u6302\u4e86\uff0c\u5207\u4e86\u4e5f\u6ca1\u7528\u3002\u5065\u5eb7\u68c0\u67e5\u811a\u672c\u8981\u68c0\u67e5\uff1a<\/p>\n<pre><code>#!\/bin\/bash\ncurl -fsS --max-time 2 http:\/\/127.0.0.1:8080\/health || exit 1\nsystemctl is-active --quiet nginx || exit 1<\/code><\/pre>\n<p>\u811a\u672c\u8fd4\u56de\u975e 0 \u5c31\u964d\u4f18\u5148\u7ea7\uff0c\u89e6\u53d1\u5207\u6362\u3002\u68c0\u67e5\u9891\u7387\u548c\u8d85\u65f6\u8981\u8c03\u597d\uff0c\u592a\u654f\u611f\u4f1a\u6296\uff0c\u592a\u8fdf\u949d\u6062\u590d\u6162\u3002<\/p>\n<h2 id=\"\u8111\u88c2\u600e\u4e48\u9632\">\u8111\u88c2\u600e\u4e48\u9632<\/h2>\n<p>\u4e24\u53f0\u90fd\u4ee5\u4e3a\u81ea\u5df1\u662f\u4e3b\uff0c\u5c31\u662f\u8111\u88c2\u3002\u5e38\u89c1\u539f\u56e0\uff1a\u5fc3\u8df3\u7f51\u7edc\u65ad\u3001\u9632\u706b\u5899\u62e6\u4e86 VRRP\u3001\u4f18\u5148\u7ea7\u914d\u7f6e\u9519\u3002\u9632\u6cd5\uff1a<\/p>\n<ul>\n<li>\u5fc3\u8df3\u8d70\u72ec\u7acb\u7f51\u5361\u6216\u72ec\u7acb\u94fe\u8def<\/li>\n<li>\u52a0\u4ef2\u88c1\u8282\u70b9\u6216\u68c0\u67e5\u7f51\u5173\u53ef\u8fbe\u6027<\/li>\n<li>\u5207\u6362\u811a\u672c\u505a\u5e42\u7b49\uff0c\u907f\u514d\u91cd\u590d\u6302\u8f7d\u3001\u91cd\u590d\u542f\u52a8<\/li>\n<li>\u6570\u636e\u5e93\u53ea\u5141\u8bb8\u4e00\u4e2a\u5199\u8282\u70b9\uff0c\u522b\u8ba9\u4e24\u8fb9\u90fd\u5199<\/li>\n<\/ul>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/62dde3a3263a1e3.jpg\" alt=\"\u4e24\u4e2a\u8282\u70b9\u4e4b\u95f4\u7684\u8111\u88c2\u8b66\u544a\u4e0e\u4ef2\u88c1\u62a4\u76fe\" class=\"wp-image-3388\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/62dde3a3263a1e3.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/62dde3a3263a1e3-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/62dde3a3263a1e3-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/62dde3a3263a1e3-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>\u8111\u88c2\u4f1a\u8ba9\u4e24\u8fb9\u90fd\u5199\u6570\u636e\uff0c\u5fc5\u987b\u6709\u4ef2\u88c1\u548c\u5e42\u7b49\u5207\u6362\u811a\u672c\u3002<\/figcaption><\/figure>\n<h2 id=\"\u6570\u636e\u5c42\u600e\u4e48\u529e\">\u6570\u636e\u5c42\u600e\u4e48\u529e<\/h2>\n<p>\u5e94\u7528\u65e0\u72b6\u6001\u53ef\u4ee5\u968f\u4fbf\u5207\uff0c\u6570\u636e\u5c42\u4e0d\u884c\u3002\u6570\u636e\u5e93\u505a\u4e3b\u4ece\uff0c\u5e94\u7528\u5199\u4e3b\u8bfb\u4ece\uff1bRedis \u505a\u4e3b\u4ece\u6216\u54e8\u5175\uff1b\u6587\u4ef6\u653e\u5bf9\u8c61\u5b58\u50a8\u6216\u5171\u4eab\u76d8\u3002\u5207\u6362\u65f6\u5148\u786e\u8ba4\u4e3b\u4ece\u5ef6\u8fdf\uff0c\u522b\u628a\u65e7\u4e3b\u7684\u6570\u636e\u8986\u76d6\u6389\u3002<\/p>\n<h2 id=\"\u5207\u6362\u6f14\u7ec3\">\u5207\u6362\u6f14\u7ec3<\/h2>\n<ol>\n<li>\u505c\u6389\u4e3b\u673a\u670d\u52a1\uff0c\u89c2\u5bdf VIP\/DNS \u662f\u5426\u5207\u6362<\/li>\n<li>\u786e\u8ba4\u5e94\u7528\u3001\u6570\u636e\u5e93\u3001\u961f\u5217\u90fd\u6062\u590d<\/li>\n<li>\u8bb0\u5f55\u5207\u6362\u8017\u65f6\u548c\u5931\u8d25\u70b9<\/li>\n<li>\u6062\u590d\u4e3b\u673a\uff0c\u786e\u8ba4\u4e0d\u4f1a\u6765\u56de\u6296<\/li>\n<li>\u6bcf\u5b63\u5ea6\u6f14\u7ec3\u4e00\u6b21<\/li>\n<\/ol>\n<p>\u6ca1\u6f14\u7ec3\u8fc7\u7684\u9ad8\u53ef\u7528\uff0c\u7b49\u4e8e\u6ca1\u6709\u3002<\/p>\n<h2 id=\"\u5e38\u89c1\u5751\">\u5e38\u89c1\u5751<\/h2>\n<ul>\n<li>\u4e91\u7f51\u7edc\u4e0d\u652f\u6301 VRRP\uff0cKeepalived \u8d77\u4e0d\u6765<\/li>\n<li>\u5065\u5eb7\u68c0\u67e5\u53ea ping\uff0c\u5e94\u7528\u6302\u4e86\u4e0d\u5207<\/li>\n<li>\u8111\u88c2\u540e\u4e24\u8fb9\u90fd\u5199\u6570\u636e\u5e93<\/li>\n<li>VIP \u5207\u4e86\u4f46 ARP \u7f13\u5b58\u6ca1\u66f4\u65b0<\/li>\n<li>\u5907\u673a\u914d\u7f6e\u548c\u4e3b\u673a\u4e0d\u4e00\u81f4\uff0c\u5207\u8fc7\u53bb\u8dd1\u4e0d\u8d77\u6765<\/li>\n<\/ul>\n<h2 id=\"dns-\u5207\u6362\u65b9\u6848\">DNS \u5207\u6362\u65b9\u6848<\/h2>\n<p>\u4e91\u7f51\u7edc\u4e0d\u652f\u6301 VIP \u65f6\uff0c\u53ef\u4ee5\u7528 DNS + \u5065\u5eb7\u68c0\u67e5\uff1a\u76d1\u63a7\u53d1\u73b0\u4e3b\u673a\u6545\u969c\uff0c\u628a\u57df\u540d\u89e3\u6790\u5207\u5230\u5907\u673a\u3002TTL \u8c03\u5230 60 \u79d2\u4ee5\u5185\uff0c\u5207\u6362\u901a\u5e38\u5728\u51e0\u5206\u949f\u5185\u751f\u6548\u3002\u7f3a\u70b9\u662f\u4f9d\u8d56 DNS \u7f13\u5b58\uff0cRTO \u6bd4 VIP \u957f\u3002<\/p>\n<h2 id=\"\u53cc\u6d3b\u7684\u6570\u636e\u4e00\u81f4\u6027\">\u53cc\u6d3b\u7684\u6570\u636e\u4e00\u81f4\u6027<\/h2>\n<p>\u53cc\u6d3b\u6700\u96be\u7684\u662f\u6570\u636e\u3002\u4e24\u53f0\u90fd\u5199\u540c\u4e00\u4e2a\u6570\u636e\u5e93\uff0c\u5bb9\u6613\u51b2\u7a81\uff1b\u5199\u5404\u81ea\u672c\u5730\u5e93\uff0c\u53c8\u8981\u540c\u6b65\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u5e94\u7528\u65e0\u72b6\u6001\u3001\u6570\u636e\u5e93\u5355\u4e3b\u3001\u6587\u4ef6\u653e\u5bf9\u8c61\u5b58\u50a8\uff0c\u6240\u8c13\u201c\u53cc\u6d3b\u201d\u53ea\u6d3b\u5e94\u7528\u5c42\u3002<\/p>\n<h2 id=\"\u76d1\u63a7\u548c\u544a\u8b66\">\u76d1\u63a7\u548c\u544a\u8b66<\/h2>\n<p>\u76d1\u63a7 VIP \u662f\u5426\u5728\u4e3b\u673a\u3001\u5065\u5eb7\u68c0\u67e5\u662f\u5426\u901a\u8fc7\u3001\u5207\u6362\u6b21\u6570\u3001\u4e3b\u4ece\u5ef6\u8fdf\u3002\u5207\u6362\u6b21\u6570\u7a81\u7136\u53d8\u591a\uff0c\u8bf4\u660e\u7f51\u7edc\u6216\u5e94\u7528\u5728\u6296\uff0c\u5148\u67e5\u539f\u56e0\u518d\u8c08\u4f18\u5316\u3002<\/p>\n<h2 id=\"\u6210\u672c\">\u6210\u672c<\/h2>\n<p>\u4e3b\u5907\u8981\u4e24\u53f0\u673a\u5668\uff0c\u53cc\u6d3b\u4e5f\u8981\u4e24\u53f0\uff0c\u52a0\u4e0a\u8d1f\u8f7d\u5747\u8861\u3001\u5171\u4eab\u5b58\u50a8\u548c\u76d1\u63a7\uff0c\u6210\u672c\u81f3\u5c11\u7ffb\u500d\u3002\u6309\u4e1a\u52a1\u4e2d\u65ad\u635f\u5931\u7b97\uff0c\u503c\u4e0d\u503c\u8981\u63d0\u524d\u60f3\u6e05\u695a\u3002<\/p>\n<h2 id=\"\u5907\u673a\u8981\u4e0d\u8981\u8dd1\u4e1a\u52a1\">\u5907\u673a\u8981\u4e0d\u8981\u8dd1\u4e1a\u52a1<\/h2>\n<p>\u5907\u673a\u53ef\u4ee5\u8dd1\u53ea\u8bfb\u3001\u5907\u4efd\u3001\u76d1\u63a7\u3001\u6279\u5904\u7406\uff0c\u4f46\u522b\u8dd1\u4f1a\u62a2 CPU\u3001\u5185\u5b58\u548c\u5e26\u5bbd\u7684\u6838\u5fc3\u4e1a\u52a1\u3002\u5207\u6362\u65f6\u5907\u673a\u8981\u80fd\u7acb\u523b\u63a5\u7ba1\uff0c\u8d44\u6e90\u5f97\u7559\u51fa\u6765\u3002<\/p>\n<h2 id=\"\u5207\u6362\u811a\u672c\u6ce8\u610f\">\u5207\u6362\u811a\u672c\u6ce8\u610f<\/h2>\n<p>\u5207\u6362\u811a\u672c\u8981\u5e42\u7b49\uff1a\u91cd\u590d\u6267\u884c\u4e0d\u4f1a\u91cd\u590d\u6302\u8f7d\u3001\u91cd\u590d\u542f\u52a8\u3001\u91cd\u590d\u6539 DNS\u3002\u811a\u672c\u91cc\u52a0\u9501\u548c\u65e5\u5fd7\uff0c\u51fa\u95ee\u9898\u80fd\u770b\u51fa\u6267\u884c\u5230\u54ea\u4e00\u6b65\u3002<\/p>\n<h2 id=\"\u6f14\u7ec3\u9891\u7387\">\u6f14\u7ec3\u9891\u7387<\/h2>\n<p>\u81f3\u5c11\u6bcf\u5b63\u5ea6\u4e00\u6b21\uff0c\u4e1a\u52a1\u5927\u4fc3\u524d\u518d\u52a0\u4e00\u6b21\u3002\u6f14\u7ec3\u8981\u8986\u76d6\u4e3b\u673a\u5b95\u673a\u3001\u7f51\u7edc\u65ad\u5f00\u3001\u6570\u636e\u5e93\u4e3b\u4ece\u5207\u6362\u4e09\u79cd\u573a\u666f\u3002<\/p>\n<h2 id=\"vip-\u6f02\u79fb\u5931\u8d25\u600e\u4e48\u67e5\">VIP \u6f02\u79fb\u5931\u8d25\u600e\u4e48\u67e5<\/h2>\n<p>\u5148\u770b Keepalived \u65e5\u5fd7\u548c VRRP \u72b6\u6001\uff0c\u518d\u786e\u8ba4\u4e91\u7f51\u7edc\u662f\u5426\u5141\u8bb8\u7ec4\u64ad\u548c\u514d\u8d39 ARP\uff1b\u7136\u540e\u67e5\u9632\u706b\u5899\u3001\u5b89\u5168\u7ec4\u548c\u7f51\u5361\u3002\u5f88\u591a\u201c\u914d\u7f6e\u6ca1\u95ee\u9898\u201d\u7684\u5207\u6362\u5931\u8d25\uff0c\u6700\u540e\u90fd\u662f\u4e91\u5e73\u53f0\u4e0d\u652f\u6301 VRRP\u3002<\/p>\n<p>\u9ad8\u53ef\u7528\u7684\u76ee\u6807\u662f\u4e1a\u52a1\u4e0d\u4e2d\u65ad\uff0c\u4e0d\u662f\u673a\u5668\u4e0d\u5b95\u673a\uff1b\u673a\u5668\u4e00\u5b9a\u4f1a\u574f\uff0c\u5173\u952e\u662f\u574f\u4e86\u80fd\u591a\u5feb\u6062\u590d\u3002<\/p>\n<p>\u5207\u6362\u65f6\u95f4\u8981\u5199\u8fdb SLA\uff0c\u548c\u4e1a\u52a1\u65b9\u5bf9\u9f50\u9884\u671f\u3002<\/p>\n<p>\u6700\u540e\uff0c\u522b\u628a\u9ad8\u53ef\u7528\u505a\u6210\u201c\u770b\u8d77\u6765\u6709\u201d\uff0c\u5207\u6362\u4e0d\u52a8\u7b49\u4e8e\u6ca1\u6709\u3002<\/p>\n<p>\u6f14\u7ec3\u8bb0\u5f55\u8981\u5b58\u6863\u3002<\/p>\n<p>\u9ad8\u53ef\u7528\u662f\u6301\u7eed\u6295\u5165\uff0c\u4e0d\u662f\u4e00\u6b21\u6027\u9879\u76ee\u3002<\/p>\n<p>\uff0c\u522b\u5fd8\u3002<\/p>\n<h2 id=\"\u5e38\u89c1\u95ee\u9898-faq\">\u5e38\u89c1\u95ee\u9898 FAQ<\/h2>\n<p><strong>Q1\uff1a\u4e24\u53f0\u673a\u5668\u4e00\u5b9a\u8981 Keepalived \u5417\uff1f<\/strong><\/p>\n<p>\u4e0d\u4e00\u5b9a\u3002\u4e91\u8d1f\u8f7d\u5747\u8861\u3001DNS \u6545\u969c\u8f6c\u79fb\u90fd\u80fd\u505a\u5165\u53e3\u9ad8\u53ef\u7528\uff0c\u53d6\u51b3\u4e8e\u4e91\u5382\u5546\u80fd\u529b\u548c\u4f60\u80fd\u63a5\u53d7\u7684 RTO\u3002<\/p>\n<p><strong>Q2\uff1aKeepalived \u5728\u4e91\u4e0a\u80fd\u7528\u5417\uff1f<\/strong><\/p>\n<p>\u770b\u7f51\u7edc\u3002\u652f\u6301\u6d6e\u52a8 IP\/\u7ec4\u64ad\u7684\u53ef\u4ee5\u7528\uff1b\u4e0d\u652f\u6301\u7684\u8981\u7528\u4e91\u4ea7\u54c1\uff0c\u522b\u786c\u914d\u3002<\/p>\n<p><strong>Q3\uff1a\u4e3b\u5907\u6d6a\u8d39\u4e00\u53f0\u673a\u5668\u5417\uff1f<\/strong><\/p>\n<p>\u662f\u6210\u672c\u6362\u53ef\u7528\u6027\u3002\u5907\u673a\u53ef\u4ee5\u8dd1\u53ea\u8bfb\u4efb\u52a1\u3001\u5907\u4efd\u3001\u76d1\u63a7\uff0c\u4f46\u522b\u8dd1\u4f1a\u62a2\u8d44\u6e90\u7684\u4e1a\u52a1\u3002<\/p>\n<p><strong>Q4\uff1a\u6570\u636e\u5e93\u600e\u4e48\u505a\u9ad8\u53ef\u7528\uff1f<\/strong><\/p>\n<p>\u4e3b\u4ece + \u81ea\u52a8\u5207\u6362\uff08MHA\/Orchestrator\/\u4e91\u6570\u636e\u5e93\uff09\uff0c\u6216\u76f4\u63a5\u7528\u4e91\u6570\u636e\u5e93\u3002\u81ea\u5df1\u642d\u8981\u5904\u7406\u5ef6\u8fdf\u548c\u8111\u88c2\u3002<\/p>\n<p><strong>Q5\uff1a\u5207\u6362\u8981\u591a\u4e45\uff1f<\/strong><\/p>\n<p>Keepalived \u79d2\u7ea7\u5230\u51e0\u5341\u79d2\uff1bDNS \u5207\u6362\u53d6\u51b3\u4e8e TTL\uff0c\u901a\u5e38\u51e0\u5206\u949f\u3002\u6309\u4e1a\u52a1\u80fd\u63a5\u53d7\u7684\u65f6\u95f4\u9009\u65b9\u6848\u3002<\/p>\n<h2 id=\"\u603b\u7ed3\">\u603b\u7ed3<\/h2>\n<p>\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u505a\u9ad8\u53ef\u7528\uff0c\u5148\u786e\u8ba4\u4e91\u7f51\u7edc\u652f\u4e0d\u652f\u6301 VIP\uff0c\u518d\u5b9a\u4e3b\u5907\u8fd8\u662f\u53cc\u6d3b\uff1b\u5065\u5eb7\u68c0\u67e5\u8981\u67e5\u5e94\u7528\uff0c\u8111\u88c2\u8981\u6709\u4ef2\u88c1\uff0c\u6570\u636e\u5c42\u8981\u6709\u4e3b\u4ece\u3002\u6700\u540e\uff0c\u5fc5\u987b\u6f14\u7ec3\u3002<\/p>\n<p>\u9700\u8981\u4e24\u53f0\u673a\u5668\u505a\u5207\u6362\u6f14\u7ec3\uff0c\u53ef\u4ee5\u6309\u5c0f\u65f6\u5f00<a href=\"https:\/\/www.ygcloud.com\/vps\/hong-kong-cn2-vps\">\u8424\u5149\u4e91\u9999\u6e2f CN2 VPS<\/a>\uff0c\u5148\u628a Keepalived \u548c\u5065\u5eb7\u68c0\u67e5\u8dd1\u901a\u3002<\/p>\n<h2 id=\"\u76f8\u5173\u63a8\u8350\">\u76f8\u5173\u63a8\u8350<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3359\/\">\u4e91\u670d\u52a1\u5668\u8d1f\u8f7d\u5747\u8861\u600e\u4e48\u642d\uff1fNginx\u3001HAProxy \u4e0e\u5065\u5eb7\u68c0\u67e5<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3231\/\">\u7f51\u7ad9 502 \u9519\u8bef\u600e\u4e48\u6392\u67e5\uff1fNginx\u3001PHP-FPM \u4e0e\u540e\u7aef\u8d85\u65f6<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/1380\/\">\u7ad9\u70b9\u76d1\u63a7\u600e\u4e48\u505a\uff1fHTTP\u3001\u5e94\u7528\u3001\u4e3b\u673a\u4e0e\u5907\u4efd\u76d1\u63a7<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/888\/\">VPS \u5b89\u5168\u8bbe\u7f6e\u6307\u5357\uff1a\u65b0\u670d\u52a1\u5668\u4e0a\u7ebf\u524d\u7684 12 \u9879\u68c0\u67e5<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/1951\/\">Docker \u90e8\u7f72\u5e94\u7528\u9700\u8981\u591a\u5927 VPS \u914d\u7f6e\uff1f<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1a\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u505a\u9ad8\u53ef\u7528\uff0c\u6838\u5fc3\u4e0d\u662f\u88c5\u4e2a Keepalived\uff0c\u800c\u662f\u89e3\u51b3\u56db\u4ef6\u4e8b\uff1a\u6d6e\u52a8 IP \u80fd\u4e0d\u80fd\u7528\u3001\u5065\u5eb7\u68c0\u67e5\u51c6\u4e0d\u51c6\u3001\u8111\u88c2\u600e\u4e48\u9632\u3001\u6570\u636e\u600e\u4e48\u540c\u6b65\u3002\u4e91\u73af\u5883\u7ecf\u5e38\u4e0d\u652f\u6301\u7ec4\u64ad\u548c\u514d\u8d39 ARP\uff0c\u5f88\u591a\u65b9\u6848\u6700\u540e\u8981\u843d\u5230\u4e91\u8d1f\u8f7d\u5747\u8861\u6216 DNS \u5207\u6362\u4e0a\u3002 \u5148\u660e\u786e&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3385,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[43,46],"topic":[],"class_list":["post-3389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-100","tag-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u9ad8\u53ef\u7528\uff1aKeepalived\u3001VIP \u4e0e\u5207\u6362\u6f14\u7ec3<\/title>\n<meta name=\"description\" content=\"\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u505a\u9ad8\u53ef\u7528\uff0c\u8981\u89e3\u51b3 VIP\u3001\u5065\u5eb7\u68c0\u67e5\u3001\u8111\u88c2\u548c\u6570\u636e\u540c\u6b65\u3002\u7ed9\u51fa Keepalived \u914d\u7f6e\u3001\u4e91\u7f51\u7edc\u9650\u5236\u3001\u5207\u6362\u6f14\u7ec3\u548c\u5e38\u89c1\u5751\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ygcloud.com\/knowledge\/3389\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u9ad8\u53ef\u7528\uff1aKeepalived\u3001VIP \u4e0e\u5207\u6362\u6f14\u7ec3\" \/>\n<meta property=\"og:description\" content=\"\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u505a\u9ad8\u53ef\u7528\uff0c\u8981\u89e3\u51b3 VIP\u3001\u5065\u5eb7\u68c0\u67e5\u3001\u8111\u88c2\u548c\u6570\u636e\u540c\u6b65\u3002\u7ed9\u51fa Keepalived \u914d\u7f6e\u3001\u4e91\u7f51\u7edc\u9650\u5236\u3001\u5207\u6362\u6f14\u7ec3\u548c\u5e38\u89c1\u5751\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ygcloud.com\/knowledge\/3389\/\" \/>\n<meta property=\"og:site_name\" content=\"VPS\u77e5\u8bc6\u5206\u4eab\u7ad9\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-29T03:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-29T03:49:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/7a59e17d8e2ce59.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u6d77\u5916VPS\u63a8\u8350\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6d77\u5916VPS\u63a8\u8350\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ygcloud.com\\\/knowledge\\\/3389\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ygcloud.com\\\/knowledge\\\/3389\\\/\"},\"author\":{\"name\":\"\u6d77\u5916VPS\u63a8\u8350\",\"@id\":\"https:\\\/\\\/www.ygcloud.com\\\/knowledge\\\/#\\\/schema\\\/person\\\/601f21f360aeefaddbdfd0f14953d704\"},\"headline\":\"\u4e24\u53f0\u4e91\u670d\u52a1\u5668\u9ad8\u53ef\u7528\uff1aKeepalived\u3001VIP 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