{"id":772,"date":"2023-03-08T22:43:12","date_gmt":"2023-03-08T14:43:12","guid":{"rendered":"http:\/\/www.spiceandwolf.com.cn\/?p=772"},"modified":"2023-03-08T23:35:22","modified_gmt":"2023-03-08T15:35:22","slug":"nginx-load-balance","status":"publish","type":"post","link":"http:\/\/www.spiceandwolf.com.cn\/index.php\/nginx-load-balance\/","title":{"rendered":"nginx\u8d1f\u8f7d\u5747\u8861"},"content":{"rendered":"\n<p>\u670d\u52a1\u5668\u9ad8\u53ef\u7528\u8d8a\u6765\u8d8a\u6210\u4e3a\u5fc5\u4e0d\u53ef\u5c11\u7684\u9700\u6c42\u4e4b\u4e00\uff0c\u8d1f\u8f7d\u5747\u8861\u5c31\u662f\u8fbe\u6210\u9ad8\u53ef\u7528\u73af\u5883\u7684\u4e00\u4e2a\u91cd\u8981\u56e0\u7d20\uff0c\u4f7f\u7528nginx\u80fd\u65b9\u4fbf\u7684\u5b9e\u73b0\u590d\u6742\u7684\u8d1f\u8f7d\u5747\u8861\u9700\u6c42\uff0c\u6240\u4ee5nginx\u8d1f\u8f7d\u5747\u8861\u6280\u672f\u5c06\u662f\u6211\u4eec\u8fd9\u5f20\u7684\u91cd\u70b9\u8bfe\u9898\u4e4b\u4e00\u3002\u5728\u5b9e\u73b0\u4e86\u8d1f\u8f7d\u5747\u8861\u540e\uff0c\u4e00\u4e2a\u96be\u70b9\u5c31\u662f\u5982\u4f55\u4fdd\u6301\u7528\u6237\u72b6\u6001\u4fe1\u606f\uff0c\u8fd9\u5c06\u662f\u672c\u7ae0\u9700\u8981\u91cd\u70b9\u5173\u6ce8\u7684\u7b2c\u4e8c\u4e2a\u8bfe\u9898\u3002\u6700\u540e\u4e00\u4e2a\u8bfe\u9898\u662fnginx\u7684\u8fd0\u884c\u72b6\u6001\u76d1\u6d4b\uff0c\u5206\u4e3a\u88ab\u52a8\u76d1\u6d4b\u548c\u4e3b\u52a8\u76d1\u6d4b\uff0c\u5b83\u80fd\u76d1\u6d4b\u4e0a\u6e38\u670d\u52a1\u5668\u7684\u8fd0\u884c\u72b6\u6001\u5e76\u81ea\u52a8\u76f8\u5e94\u8ba9\u670d\u52a1\u5668\u80fd\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8d1f\u8f7d\u5747\u8861<\/h2>\n\n\n\n<p>nginx\u4e2d\u4e09\u79cd\u534f\u8bae\u7684\u8d1f\u8f7d\u5747\u8861<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">HTTP\u8d1f\u8f7d\u5747\u8861<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># HTTP\u4e0a\u6e38\nhttp {\n    upstream backend {\n        # \u9ed8\u8ba4\u6743\u91cd1\n        server 10.10.12.45:80        weight=1;\n        server app.example.com:80    weight=2;\n        # \u5907\u7528\u670d\u52a1\u5668\n        server spare.example.com:80    backup;\n    }\n\n    server {\n        location \/ {\n            proxy_pass http:\/\/backend;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>http\u5757\u4e2d\u7684upstream\u5757\u5b9a\u4e49\u4e86\u4e0a\u6e38HTTP\u670d\u52a1\u5668\u7684\u5730\u5740\uff0c\u8fd9\u4e9b\u5730\u5740\u5305\u62ec\u4e86Unix socket\u3001ip\u5730\u5740\u548c\u5b8c\u5168\u9650\u5b9a\u57df\u540d\u3002\u5728\u6b64\u57fa\u7840\u4e0a\u53ef\u4ee5\u52a0\u4e0a\u4e00\u4e9b\u53ef\u9009\u53c2\u6570\uff0c\u5305\u62ec\u6743\u91cd\uff08weight\uff09\u3001\u662f\u5426\u53ef\u7528\uff08down\uff09\u3001\u662f\u5426\u5907\u7528\uff08backup\uff09\u3001\u6700\u5927\u5931\u8d25\u6b21\u6570\uff08max_fails\uff09\u548c\u5931\u8d25\u91cd\u8bd5\u65f6\u95f4\uff08fail_timeout\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">TCP\u8d1f\u8f7d\u5747\u8861<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>stream {\n    upstream mysql_read {\n        server read1.example.com:3306 weight=5;\n        server read2.example.com:3306;\n        server 10.10.12.34:3306       backup;\n    }\n\n    server {\n        listen 3306;\n        proxy_pass mysql_read;\n    }\n}<\/code><\/pre>\n\n\n\n<p>stream\u5757\u4e2d\u7684upstream\u5757\u5b9a\u4e49\u4e86\u4e0a\u6e38TCP\u670d\u52a1\u5668\u7684\u5730\u5740\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">UDP\u8d1f\u8f7d\u5747\u8861<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>stream {\n    upstream ntp {\n        server ntp1.example.com:123 weight=2;\n        server ntp2.example.com:123;\n    }\n    \n    server {\n        listen 123 udp;\n        proxy_pass ntp;\n    }\n}<\/code><\/pre>\n\n\n\n<p>stream\u5757\u4e2d\u7684upstream\u5757\u5b9a\u4e49\u4e86\u4e0a\u6e38UDP\u670d\u52a1\u5668\u7684\u5730\u5740\uff0c\u548cTCP\u7684\u533a\u522b\u5728\u4e8eserver\u76d1\u542c\u7aef\u53e3\u540e\u52a0\u4e0a\u4e86udp\u53c2\u6570\u3002\u5728\u540e\u9762\u7ee7\u7eed\u52a0\u4e0areuseport\u53c2\u6570\u540e\uff0c\u5141\u8bb8\u591a\u4e2a\u8fdb\u7a0b\/\u7ebf\u7a0bbind\/listen\u76f8\u540c\u7684IP\/PORT\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>stream {\n    server {\n        listen 1195 udp reuseport;\n        proxy_pass 127.0.0.1:1194;\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8d1f\u8f7d\u5747\u8861\u65b9\u6cd5<\/h3>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<ol class=\"wp-block-list\">\n<li>\u8f6e\u8be2\u6cd5\uff08\u9ed8\u8ba4\u7684\u8d1f\u8f7d\u5747\u8861\u65b9\u6cd5\uff09\u3002\u9ed8\u8ba4\u7684\u8d1f\u8f7d\u5747\u8861\u65b9\u6cd5\uff0c\u8bf7\u6c42\u4f1a\u88ab\u8f6e\u6d41\u53d1\u9001\u5230\u6bcf\u4e2a\u4e0a\u6e38\u670d\u52a1\u5668\u4e0a\u3002<\/li>\n\n\n\n<li>\u6700\u5c0f\u8fde\u63a5\u6570\u6cd5\uff08least_conn\uff09\u3002\u4f1a\u9009\u62e9\u79ef\u538b\u8fde\u63a5\u6570\u6700\u5c11\u5f97\u4e00\u53f0\u670d\u52a1\u5668\u6765\u5904\u7406\u5f53\u524d\u8bf7\u6c42\u3002<\/li>\n\n\n\n<li>\u6700\u5feb\u54cd\u5e94\u65f6\u95f4\uff08least_time\uff09\u3002\u57fa\u4e8e\u6700\u5c0f\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n\n\n\n<li>\u4e00\u822c\u54c8\u5e0c\u6cd5\uff08hash\uff09\u3002\u6839\u636e\u8bf7\u6c42\u6216\u8fd0\u884c\u65f6\u53d8\u91cf\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\uff0c\u53ef\u4ee5\u7528\u4e8e\u8fdb\u884c\u7ec6\u7c92\u5ea6\u6d41\u91cf\u63a7\u5236\u7684\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u52a0\u6743\u968f\u673a\u6cd5\uff08random\uff09\u3002\u6309\u7167\u6743\u91cd\u968f\u673a\u8bf7\u6c42\u4e0a\u6e38\u670d\u52a1\u5668\uff0c\u800c\u4e0d\u662f\u987a\u5e8f\u3002<\/li>\n\n\n\n<li>IP\u54c8\u5e0c\uff08ip_hash\uff09\u3002\u6839\u636eIP\u5730\u5740\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\uff0c\u540c\u4e00\u4e2aIP\u5730\u5740\u5c06\u8d1f\u8f7d\u5230\u540c\u4e00\u4e2a\u4e0a\u6e38\u670d\u52a1\u5668\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<pre class=\"wp-block-code\"><code>upstream backend {\n    # \u793a\u4f8b:\u6700\u5c0f\u8fde\u63a5\u6570\u6cd5\n    least_conn;\n    server backend.example.com;\n    server backend1.example.com;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u72b6\u6001\u53d8\u91cf\u4fdd\u6301<\/h2>\n\n\n\n<p>\u5206\u4e3acookie\u548csession\u7684\u7ec6\u7c92\u5ea6\u63a7\u5236\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528nginx plus\u7684\u7c98\u6027cookie\u7279\u6027<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>upstream backend {\n    server backend1.example.com;\n    server backend2.example.com;\n    sticky cookie\n           affinity\n           expires=1h\n           domain=.example.com\n           httponly\n           secure\n           path=\/;\n}<\/code><\/pre>\n\n\n\n<p>\u7c98\u6027cookie\u914d\u7f6e\u8bbe\u7f6e\u540e\uff0c\u6bcf\u5f53\u6709\u4e00\u4e2a\u5ba2\u6237\u7aef\u521d\u6b21\u8bf7\u6c42\u4e0a\u6e38\u670d\u52a1\u65f6\uff0cnginx plus\u4f1a\u521b\u5efa\u4e00\u4e2acookie\uff0c\u5e76\u901a\u8fc7\u8be5cookie\u5c06\u4e0b\u6e38\u5ba2\u6237\u7aef\u548c\u4e00\u4e2a\u4e0a\u6e38\u670d\u52a1\u5668\u7ed1\u5b9a\uff0c\u76ee\u7684\u662f\u8ba9\u5176\u540e\u7eed\u8bf7\u6c42\u90fd\u53d1\u5f80\u540c\u4e00\u4e2a\u4e0a\u6e38\u670d\u52a1\u5668\u3002\u53ef\u4ee5\u5728\u8be5\u914d\u7f6e\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u5c5e\u6027\uff0c\u4f8b\u5982cookie\u540d\uff08\u793a\u4f8b\u4e2d\u7684affinity\uff09\uff0c\u8fc7\u671f\u65f6\u95f4\uff08expires\uff09\uff0c\u662f\u5426\u80fd\u88ab\u5ba2\u6237\u7aef\u6d88\u8d39\uff08httponly\uff09\uff0c\u662f\u5426\u53ea\u80fd\u901a\u8fc7https\u65b9\u5f0f\u53d1\u9001\uff08secure\uff09\uff0c\u6709\u6548\u8def\u5f84\uff08path\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ddf\u8e2a\u5df2\u6709\u7684\u670d\u52a1\u5668session<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>upstream backend {\n    server backend1.example.com:8080;\n    server backend2.example.com:8081;\n\n    sticky learn\n           create=$upstream_cookie_cookiename\n           lookup=$cookie_cookiename\n           zone=client_sessions:2m;\n}<\/code><\/pre>\n\n\n\n<p>\u5f53\u7528\u6237\u53d1\u9001\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u7684web\u5e94\u7528\u65f6\uff0c\u6211\u53ef\u4ee5\u7528\u4e0a\u9762\u7684\u914d\u7f6e\u6765\u8ddf\u8e2a\u670d\u52a1\u5668session\u3002\u914d\u7f6e\u4e86sticky learn\u6307\u4ee4\u540e\uff0c\u5f53\u5e94\u7528\u5728\u67d0\u4e2a\u54cd\u5e94\u4e2d\u521b\u5efa\u5e76\u5b58\u50a8\u4e86session\u72b6\u6001\u4fe1\u606f\u7684cookie\u65f6\uff0cnginx plus\u4f1a\u53d1\u73b0\u5e76\u8ddf\u8e2a\u4ed6\u4eec\uff1b\u8ddf\u8e2a\u65f6\u6240\u4f7f\u7528\u7684\u5185\u5b58\u53ef\u4ee5\u901a\u8fc7zone\u6307\u4ee4\u6765\u6307\u5b9a\uff1b\u901a\u8fc7\u4f7f\u7528create\u6307\u4ee4\uff0c\u53ef\u4ee5\u8ba9nginx plus\u5728\u4e0a\u6e38\u7684\u54cd\u5e94\u4e2d\u5bfb\u627ecookies\uff0c\u8fd9\u4e9b\u53c2\u6570\u90fd\u7531HTTP\u5757\u66b4\u9732\u51fa\u6765\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8def\u7531\u63a7\u5236<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>map $cookie_jsessionid $route_cookie {\n    ~.+\\.(?P&lt;route&gt;\\w+)$ $route;\n}\n\nmap #request_uri $route_uri {\n    ~jsessionid=.+\\.(?P&lt;route&gt;\\w+)$ $route;\n}\n\nupstream backend {\n    server backend1.example.com route=a;\n    server backend2.example.com route=b;\n\n    sticky route $route_cookie $route_uri;\n}<\/code><\/pre>\n\n\n\n<p>\u7ec6\u7c92\u5ea6\u8def\u7531\u63a7\u5236<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Connection Drainning<\/h2>\n\n\n\n<p>\u6709\u4e00\u79cd\u9700\u6c42\u662f\uff0c\u8981\u8ba9\u5ba2\u6237\u5728\u65e0\u611f\u77e5\u7684\u60c5\u51b5\u4e0b\u66f4\u65b0\u7cfb\u7edf\uff0c\u8fd9\u65f6\u5c31\u8981\u542f\u52a8\u65b0\u670d\u52a1\u5e76\u5173\u6389\u65e7\u670d\u52a1\uff0c\u4f46\u5982\u679c\u76f4\u63a5\u5173\u6389\u65e7\u670d\u52a1\u4f1a\u5f71\u54cd\u5ba2\u6237\u4f53\u9a8c\uff0c\u56e0\u4e3a\u4f1a\u8ba9session\u4e22\u5931\uff0c\u8fd9\u5c31\u53ef\u80fd\u51fa\u73b0\u8ba9\u672c\u5df2\u7ecf\u901a\u8fc7\u9a8c\u8bc1\u7684\u7528\u6237\u9700\u8981\u518d\u6b21\u767b\u5f55\u7684\u4e00\u4e9b\u60c5\u51b5\u3002\u6240\u4ee5\uff0c\u4e3a\u4e86\u4f18\u96c5\u5730\u5173\u95ed\u670d\u52a1\u5668\uff0c\u6211\u4eec\u9700\u8981\u5bf9\u65e7\u670d\u52a1\u8fdb\u884cconnection drainning\u64cd\u4f5c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ curl -X POST -d '{\"drain\":true}' 'http:\/\/nginx.local\/api\/3\/http\/upstreams\/backend\/servers\/0'<\/code><\/pre>\n\n\n\n<p>\u54cd\u5e94\u4fe1\u606f\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n    \"id\":0,\n    \"server\":\"172.17.0.3:80\",\n    \"weight\":1,\n    \"max_conns\":0,\n    \"max_fails\":1,\n    \"fail_timeout\":\"10s\",\n    \"slow_start\":0s,\n    \"route\":\"\",\n    \"backup\":false,\n    \"down\":false,\n    \"drain\":true\n}<\/code><\/pre>\n\n\n\n<p>\u6267\u884c\u5b8c\u6307\u4ee4\u540e\uff0c\u76f8\u5e94\u670d\u52a1\u4f1a\u505c\u6b62\u5efa\u7acb\u8fde\u63a5\uff0c\u5e76\u6301\u7eed\u8fd0\u884c\u4e00\u6bb5\u65f6\u95f4\u76f4\u5230\u6240\u6709session\u8017\u5c3d\u3002\u4e0a\u9762\u662f\u7528nginx plus API\u7684\u65b9\u5f0f\u53bb\u622a\u6d41\uff0c\u8fd8\u80fd\u4fee\u6539\u5e76reload\u70ed\u52a0\u8f7d\u670d\u52a1\u7684\u65b9\u5f0f\u5b9e\u73b0\u622a\u6d41\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u670d\u52a1\u88ab\u52a8\u5065\u5eb7\u68c0\u67e5<\/h3>\n\n\n\n<p>\u5f53\u4f60\u9700\u8981\u88ab\u52a8\u7684\u68c0\u67e5\u4e0a\u6d41\u670d\u52a1\u7684\u8fd0\u884c\u72b6\u6001\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u6307\u4ee4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>upstream backend {\n    server backend1.example.com:1234 max_fails=3 fail_timeout=3s;\n    server backend2.example.com:1234 max_fails=3 fail_timeout=3s;\n}<\/code><\/pre>\n\n\n\n<p>\u88ab\u52a8\u5065\u5eb7\u68c0\u67e5\u4e2d\u7684server\u6307\u4ee4\u9002\u7528\u4e8eHTTP\uff0cTCP\u548cUDP\uff1b\u4e14\u88ab\u52a8\u68c0\u67e5\u662f\u9ed8\u8ba4\u8bbe\u7f6e\uff0c\u9ed8\u8ba4\u7684max_fails\u4e3a1\uff0cfail_timeout\u4e3a10s\u3002\u5373\u5f53\u8bf7\u6c42\u5931\u8d25\u8fbe\u52301\u4e2a\u65f6\uff0c\u5c31\u4f1a\u6807\u8bb0\u76f8\u5e94\u4e0a\u6e38\u670d\u52a1\u5f02\u5e38\uff0cnginx\u4f1a\u6682\u65f6\u505c\u6b62\u5c06\u8bf7\u6c42\u8f6c\u53d1\u5230\u76f8\u5e94\u4e0a\u6e38\u5730\u5740\uff0c\u4f46\u6bcf\u969410s\uff0cnignx\u4f1a\u53d1\u9001\u5c11\u91cf\u8bf7\u6c42\u6765\u63a2\u6d4b\u5176\u5065\u5eb7\u72b6\u6001\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3b\u52a8\u5065\u5eb7\u68c0\u67e5(nginx plus)<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>http {\n    server {\n        #...\n        location \/ {\n            proxy_pass http:\/\/backend;\n            health_check interval=2s;\n                fails=2\n                passes=5\n                uri=\/\n                match=welcome;\n        }\n    }\n    # status is 200, content type is \"text\/html\",\n    # and body contains \"Welcome to nginx!\"\n    match welcome {\n        status 200;\n        header Content-Type = text\/html;\n        body ~ \"Welcome to nginx!\";\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u662fhttp\u7684\u5065\u5eb7\u68c0\u67e5\u914d\u7f6e\uff0c\u8868\u793a\u901a\u8fc7\u6bcf\u4e24\u79d2\u53d1\u9001HTTP get\u8bf7\u6c42\u5230\/\u8bf7\u6c42\u8def\u5f84\uff0c\u6765\u786e\u8ba4\u4e0a\u6e38\u670d\u52a1\u7684\u5065\u5eb7\u72b6\u6001\uff0c\u5982\u679c\u8fde\u7eed5\u4e2a\u54cd\u5e94\u7b26\u5408\u8981\u6c42\uff0cnginx\u5c31\u4f1a\u8ba4\u4e3a\u4e0a\u6e38\u670d\u52a1\u662f\u5065\u5eb7\u7684\uff0c\u5982\u679c\u8fde\u7eed\u4e24\u4e2a\u8bf7\u6c42\u90fd\u5931\u8d25\u4e86\uff0cnginx\u5c31\u4f1a\u8ba4\u4e3a\u4e0a\u6e38\u670d\u52a1\u5065\u5eb7\u72b6\u6001\u5f02\u5e38\u3002\u8bf7\u6c42\u5982\u4f55\u624d\u80fd\u7b26\u5408\u8981\u6c42\u5462\uff0c\u8fd9\u5c31\u8981\u54cd\u5e94\u80fd\u5339\u914dwelcome\u5757\uff0c\u5339\u914d\u7684\u53c2\u6570\u5206\u4e09\u79cd\uff0c\u4e00\u79cd\u662f\u54cd\u5e94\u72b6\u6001\uff08status\uff09\uff0c\u7b2c\u4e8c\u79cd\u662f\u8bf7\u6c42\u5934\u4fe1\u606f\uff0c\u7b2c\u4e09\u79cd\u662f\u8bf7\u6c42\u4f53\uff0c\u6b64\u793a\u4f8b\u4e2d\u8868\u793a\u54cd\u5e94\u4e2d\u72b6\u6001\u4fe1\u606f\u9700\u8981\u662f200\uff0c\u54cd\u5e94\u5934\u9700\u8981\u65f6text\/html\uff0c\u54cd\u5e94\u4f53\u9700\u8981\u65f6Welcome to nginx!\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>stream {\n    # ...\n    server {\n        listen 1234;\n        proxy_pass stream_backend;\n        health_check interval=10s;\n            passes=2;\n            fails=3;\n            match=welcome;\n        health_check_timeout 5s;\n    }\n    match welcome {\n        send \"GET \/ HTTP\/1.0\\r\\nHost: localhost\\r\\n\\r\\n\";\n        except ~* \"200 OK\";\n    }\n    # ...\n}<\/code><\/pre>\n\n\n\n<p>\u8fd9\u662f\u4e00\u4e2aTCP\u4e3b\u52a8\u5065\u5eb7\u68c0\u67e5\u914d\u7f6e\uff0c\u8868\u793anginx\u76d1\u542c1234\u7aef\u53e3\uff0c\u5e76\u5c06\u8bf7\u6c42\u4ee3\u7406\u5230stream_backend\u4e0a\u6e38\u670d\u52a1\uff0c\u68c0\u67e5\u95f4\u9694\u4e3a10\u79d2\uff0c\u6bcf\u4e24\u4e2a\u8fde\u7eed\u6210\u529f\u8bf7\u6c42\u8868\u793a\u5065\u5eb7\uff0c\u6bcf\u4e09\u4e2a\u8fde\u7eed\u5931\u8d25\u8bf7\u6c42\u8868\u793a\u5f02\u5e38\uff0c\u5f02\u5e38\u540e\u4f1a\u6bcf5\u79d2\u63a2\u67e5\u5f02\u5e38\u670d\u52a1\u7684\u5065\u5eb7\u72b6\u6001\u3002\u5339\u914d\u89c4\u5219\u5728welcome\u5757\u4e2d\u5b9a\u4e49\uff0c\u4e3b\u8981\u6709\u4e24\u4e2a\u53c2\u6570\uff0c\u4e00\u4e2a\u662fsend\uff0c\u4e00\u4e2a\u662fexcept\uff0c\u5982\u679c\u5339\u914d\u5757\u4e2d\u4e24\u4e2a\u53c2\u6570\u90fd\u6ca1\u6709\uff0c\u8868\u793a\u53ea\u6d4b\u8bd5\u662f\u5426\u80fd\u8fde\u63a5\u5230\u670d\u52a1\u5668\uff0c\u8fde\u63a5\u5230\u5219\u7b26\u5408\u5339\u914d\u8981\u6c42\uff1b\u5982\u679c\u53ea\u6709\u4e00\u4e2aexcept\u53c2\u6570\uff0c\u5219\u671f\u671b\u670d\u52a1\u5668\u4f1a\u65e0\u6761\u4ef6\u53d1\u9001\u6570\u636e\uff1b\u5982\u679c\u7eb8\u8d28\u5b9a\u4e86send\u53c2\u6570\uff0c\u5219\u671f\u671b\u5728\u8fde\u63a5\u5efa\u7acb\u6210\u529f\u7684\u57fa\u7840\u4e0a\uff0c\u6307\u5b9a\u7684\u5b57\u7b26\u4e32\u4f1a\u6210\u529f\u53d1\u9001\u5230\u4e0a\u6e38\u670d\u52a1\uff1b\u5982\u679c\u540c\u65f6\u6307\u5b9a\uff0c\u5219\u57fa\u4e8esend\u53c2\u6570\u53d1\u9001\u7684\u8bf7\u6c42\u9700\u8981\u4e0eexcept\u53c2\u6570\u6307\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6162\u542f\u52a8(nginx plus)<\/h3>\n\n\n\n<p>\u5f53\u4f60\u5e0c\u671b\u4f60\u7684\u670d\u52a1\u5728\u6ee1\u8f7d\u4e4b\u524d\u80fd\u7ecf\u5386\u4e00\u4e2a\u6162\u901f\u542f\u52a8\u8fc7\u7a0b\uff0c\u5219\u53ef\u4ee5\u91c7\u7528\u8fd9\u4e2a\u914d\u7f6e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>upstream {\n    zone backend 64k;\n    \n    server server1.example.com slow_start=20s;\n    server server2.example.com slow_start=15s;\n}<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u81f3\u5c11\u901a\u8fc720\u79d2\uff0cserver1.example.com\u624d\u4f1a\u6162\u6162\u63d0\u5347\u5176\u8fde\u63a5\u6570\uff1b\u540c\u6837\uff0c\u81f3\u5c11\u901a\u8fc715\u79d2\uff0cserver2.example.com\u624d\u4f1a\u6162\u6162\u63d0\u5347\u5176\u8fde\u63a5\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u670d\u52a1\u5668\u9ad8\u53ef\u7528\u8d8a\u6765\u8d8a\u6210\u4e3a\u5fc5\u4e0d\u53ef\u5c11\u7684\u9700\u6c42\u4e4b\u4e00\uff0c\u8d1f\u8f7d\u5747\u8861\u5c31\u662f\u8fbe\u6210\u9ad8\u53ef\u7528\u73af\u5883\u7684\u4e00\u4e2a\u91cd\u8981\u56e0\u7d20\uff0c\u4f7f\u7528nginx\u80fd\u65b9\u4fbf\u7684\u5b9e\u73b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[72,71,74,70,73],"class_list":["post-772","post","type-post","status-publish","format-standard","hentry","category-nginx","tag-cookie","tag-session","tag-74","tag-70","tag-73"],"_links":{"self":[{"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/772","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=772"}],"version-history":[{"count":6,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/772\/revisions"}],"predecessor-version":[{"id":780,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/772\/revisions\/780"}],"wp:attachment":[{"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=772"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.spiceandwolf.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}