{"id":16804,"date":"2024-11-18T08:53:32","date_gmt":"2024-11-18T00:53:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16804\/"},"modified":"2024-11-18T08:53:32","modified_gmt":"2024-11-18T00:53:32","slug":"centos%e6%90%ad%e5%bb%baweb%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%97%b6%e7%9a%84%e7%bd%91%e7%bb%9c%e4%bc%98%e5%8c%96%e4%b8%8e%e8%b0%83%e6%a0%a1%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16804\/","title":{"rendered":"CentOS\u642d\u5efaweb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/169139278696465.jpg\" class=\"aligncenter\" title=\"CentOS\u642d\u5efaweb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\u63d2\u56fe\" alt=\"CentOS\u642d\u5efaweb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\u63d2\u56fe\" \/><\/p>\n<p>CentOS\u642d\u5efaWeb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7<\/p>\n<p>\u968f\u7740\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0cWeb\u670d\u52a1\u5668\u7684\u642d\u5efa\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002CentOS\u4f5c\u4e3a\u4e00\u6b3e\u5e38\u7528\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u642d\u5efaWeb\u670d\u52a1\u5668\u3002\u4e3a\u4e86\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\u6210\u4e3a\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u73af\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9bCentOS\u642d\u5efaWeb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\uff0c\u5e76\u9644\u4e0a\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<ol>\n<li>TCP\/IP\u6808\u4f18\u5316<\/li>\n<\/ol>\n<p>TCP\/IP\u534f\u8bae\u662f\u7f51\u7edc\u901a\u4fe1\u7684\u6838\u5fc3\uff0c\u4f18\u5316TCP\/IP\u6808\u53ef\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u7cfb\u7edf\u53c2\u6570\u6765\u4f18\u5316TCP\/IP\u6808\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u7528\u7684TCP\/IP\u6808\u4f18\u5316\u53c2\u6570\uff1a<\/p>\n<p>1.1. \u63d0\u9ad8TCP\u8fde\u63a5\u7684\u6700\u5927\u6570\u76ee<\/p>\n<p>\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_max_syn_backlog\u548c\/sys\/&#8230;\/net\/core\/somaxconn\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8TCP\u8fde\u63a5\u7684\u6700\u5927\u6570\u76ee\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u4fee\u6539\/sys\/...\/net\/ipv4\/tcp_max_syn_backlog\u53c2\u6570\necho \"1000000\" &amp;gt; \/sys\/...\/net\/ipv4\/tcp_max_syn_backlog\n\n# \u4fee\u6539\/sys\/...\/net\/core\/somaxconn\u53c2\u6570\necho \"1000000\" &amp;gt; \/sys\/...\/net\/core\/somaxconn<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.2. \u63d0\u9ad8TCP\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4<\/p>\n<p>\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_fin_timeout\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8TCP\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u4fee\u6539\/sys\/...\/net\/ipv4\/tcp_fin_timeout\u53c2\u6570\necho \"30\" &amp;gt; \/sys\/...\/net\/ipv4\/tcp_fin_timeout<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.3. \u5f00\u542fTCP\u5feb\u901f\u6253\u5f00\uff08TCP Fast Open\uff09<\/p>\n<p>TCP\u5feb\u901f\u6253\u5f00\u662f\u4e00\u79cd\u4f18\u5316\u6280\u672f\uff0c\u901a\u8fc7\u5728\u63e1\u624b\u9636\u6bb5\u53d1\u9001\u6570\u636e\uff0c\u51cf\u5c11\u7f51\u7edc\u5ef6\u8fdf\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_fastopen\u53c2\u6570\u6765\u5f00\u542fTCP\u5feb\u901f\u6253\u5f00\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u5f00\u542fTCP\u5feb\u901f\u6253\u5f00\necho \"3\" &amp;gt; \/sys\/...\/net\/ipv4\/tcp_fastopen<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>Keepalive\u53caTimeout\u8bbe\u7f6e<\/li>\n<\/ol>\n<p>Keepalive\u662f\u4e00\u79cd\u4fdd\u6301TCP\u8fde\u63a5\u6d3b\u8dc3\u7684\u673a\u5236\uff0cTimeout\u662f\u6307\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u65e0\u54cd\u5e94\u540e\u5173\u95ed\u8fde\u63a5\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/etc\/&#8230;\/sysctl.conf\u6587\u4ef6\u6765\u8bbe\u7f6eKeepalive\u548cTimeout\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u8bbe\u7f6eKeepalive\necho \"net.ipv4.tcp_keepalive_time = 1200\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf\necho \"net.ipv4.tcp_keepalive_intvl = 10\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf\necho \"net.ipv4.tcp_keepalive_probes = 6\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf\n\n# \u8bbe\u7f6eTimeout\necho \"net.ipv4.tcp_syn_retries = 2\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf\necho \"net.ipv4.tcp_synack_retries = 2\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf\necho \"net.ipv4.tcp_retries2 = 5\" &amp;gt;&amp;gt; \/etc\/...\/sysctl.conf<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5f00\u542fSYN Cookie\uff08\u53ef\u9009\uff09<\/li>\n<\/ol>\n<p>SYN Cookie\u662f\u4e00\u79cd\u62b5\u5fa1SYN Flood\u653b\u51fb\u7684\u6280\u672f\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_syncookies\u53c2\u6570\u6765\u5f00\u542fSYN Cookie\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u5f00\u542fSYN Cookie\necho \"1\" &amp;gt; \/sys\/...\/net\/ipv4\/tcp_syncookies<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u8c03\u6574\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236<\/li>\n<\/ol>\n<p>Web\u670d\u52a1\u5668\u5904\u7406\u5927\u91cf\u7684HTTP\u8bf7\u6c42\uff0c\u9700\u8981\u6253\u5f00\u5927\u91cf\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/etc\/security\/&#8230;\/limits.conf\u6587\u4ef6\u6765\u8c03\u6574\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u8c03\u6574\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\necho \"www-data soft nofile 65536\" &amp;gt;&amp;gt; \/etc\/security\/...\/limits.conf\necho \"www-data hard nofile 65536\" &amp;gt;&amp;gt; \/etc\/security\/...\/limits.conf<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u5f00\u542fTCP\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff08CUBIC\uff09<\/li>\n<\/ol>\n<p>CUBIC\u662f\u4e00\u79cdTCP\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_congestion_control\u53c2\u6570\u6765\u5f00\u542fCUBIC\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u5f00\u542fCUBIC\necho \"cubic\" &amp;gt; \/sys\/...\/net\/ipv4\/tcp_congestion_control<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u603b\u7ed3\uff1a<\/p>\n<p>\u901a\u8fc7\u4f18\u5316TCP\/IP\u6808\u3001\u8bbe\u7f6eKeepalive\u53caTimeout\u3001\u5f00\u542fSYN Cookie\u3001\u8c03\u6574\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\u4ee5\u53ca\u5f00\u542fTCP\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8CentOS\u642d\u5efa\u7684Web\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4e0a\u8ff0\u7684\u4ee3\u7801\u793a\u4f8b\u53ef\u4ee5\u4f7f\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5b9e\u65bd\u8fd9\u4e9b\u6280\u5de7\uff0c\u4ece\u800c\u6709\u6548\u4f18\u5316\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u642d\u5efaCentOS Web\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fCentOS\u642d\u5efaweb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CentOS\u642d\u5efaWeb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7 \u968f\u7740\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0cWeb\u670d\u52a1\u5668\u7684\u642d\u5efa\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002CentOS\u4f5c\u4e3a\u4e00\u6b3e\u5e38\u7528\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u642d\u5efaWeb\u670d\u52a1\u5668\u3002\u4e3a\u4e86\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\u6210\u4e3a\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u73af\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9bCentOS\u642d\u5efaWeb\u670d\u52a1\u5668\u65f6\u7684\u7f51\u7edc\u4f18\u5316\u4e0e\u8c03\u6821\u6280\u5de7\uff0c\u5e76\u9644\u4e0a\u4ee3\u7801\u793a\u4f8b\u3002 TCP\/IP\u6808\u4f18\u5316 TCP\/IP\u534f\u8bae\u662f\u7f51\u7edc\u901a\u4fe1\u7684\u6838\u5fc3\uff0c\u4f18\u5316TCP\/IP\u6808\u53ef\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6027\u80fd\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u7cfb\u7edf\u53c2\u6570\u6765\u4f18\u5316TCP\/IP\u6808\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5e38\u7528\u7684TCP\/IP\u6808\u4f18\u5316\u53c2\u6570\uff1a 1.1. \u63d0\u9ad8TCP\u8fde\u63a5\u7684\u6700\u5927\u6570\u76ee \u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_max_syn_backlog\u548c\/sys\/&#8230;\/net\/core\/somaxconn\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8TCP\u8fde\u63a5\u7684\u6700\u5927\u6570\u76ee\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # \u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_max_syn_backlog\u53c2\u6570 echo &#8220;1000000&#8221; &amp;gt; \/sys\/&#8230;\/net\/ipv4\/tcp_max_syn_backlog # \u4fee\u6539\/sys\/&#8230;\/net\/core\/somaxconn\u53c2\u6570 echo &#8220;1000000&#8221; &amp;gt; \/sys\/&#8230;\/net\/core\/somaxconn \u767b\u5f55\u540e\u590d\u5236 1.2. \u63d0\u9ad8TCP\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4 \u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_fin_timeout\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8TCP\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # \u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_fin_timeout\u53c2\u6570 echo &#8220;30&#8221; &amp;gt; \/sys\/&#8230;\/net\/ipv4\/tcp_fin_timeout \u767b\u5f55\u540e\u590d\u5236 1.3. \u5f00\u542fTCP\u5feb\u901f\u6253\u5f00\uff08TCP Fast Open\uff09 TCP\u5feb\u901f\u6253\u5f00\u662f\u4e00\u79cd\u4f18\u5316\u6280\u672f\uff0c\u901a\u8fc7\u5728\u63e1\u624b\u9636\u6bb5\u53d1\u9001\u6570\u636e\uff0c\u51cf\u5c11\u7f51\u7edc\u5ef6\u8fdf\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/sys\/&#8230;\/net\/ipv4\/tcp_fastopen\u53c2\u6570\u6765\u5f00\u542fTCP\u5feb\u901f\u6253\u5f00\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # \u5f00\u542fTCP\u5feb\u901f\u6253\u5f00 echo &#8220;3&#8221; &amp;gt; \/sys\/&#8230;\/net\/ipv4\/tcp_fastopen \u767b\u5f55\u540e\u590d\u5236 Keepalive\u53caTimeout\u8bbe\u7f6e Keepalive\u662f\u4e00\u79cd\u4fdd\u6301TCP\u8fde\u63a5\u6d3b\u8dc3\u7684\u673a\u5236\uff0cTimeout\u662f\u6307\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u65e0\u54cd\u5e94\u540e\u5173\u95ed\u8fde\u63a5\u3002\u5728CentOS\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\/etc\/&#8230;\/sysctl.conf\u6587\u4ef6\u6765\u8bbe\u7f6eKeepalive\u548cTimeout\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # \u8bbe\u7f6eKeepalive echo &#8220;net.ipv4.tcp_keepalive_time = 1200&#8221; &amp;gt;&amp;gt; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-16804","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16804","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=16804"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16804\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=16804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=16804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=16804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}