\u4e00,\u5f00\u542f\u65e5\u5fd7\u8bb0\u5f55,\u4e3a\u4ee5\u540e\u6392\u67e5\u505a\u51c6\u5907
\n1.1 \u5f00\u542fphp-fpm.conf\u7684\u9519\u8bef\u65e5\u5fd7\u548c\u6162\u6267\u884c\u65e5\u5fd7\u548c\u5e38\u89c4\u65e5\u5fd7, \u91c7\u6837\u4e00\u4e2a\u5c0f\u65f6,\u5c31\u53ef\u4ee5\u6839\u636e\u8fd9\u4e9b\u65e5\u5fd7\u7684\u5185\u5bb9\u8fdb\u884c\u5206\u6790\u95ee\u9898
\nerror_log = \/tmp\/error.log \/\/\u9519\u8bef\u65e5\u5fd7
\naccess.log = \/tmp\/access.$pool.log \/\/\u5e38\u89c4\u65e5\u5fd7,\u8bb0\u5f55\u6bcf\u6b21\u8bbf\u95ee\u65f6\u95f4,\u8bb0\u5f55\u4e0d\u540c\u53c2\u6570,\u4ee5\u9632\u6b62\u6076\u610f\u653b\u51fb,\u540e\u9762\u4f1a\u8be6\u7ec6\u89e3\u6790
\naccess.format = “%R – %u %t \\”%m %r%Q%q\\” %s %f %{mili}d %{kilo}M %{system}C%%”
\nslowlog = \/tmp\/slow.$pool.log \/\/\u6ee1\u67e5\u8be2\u65e5\u5fd7\u8bb0\u5f55
\nrequest_slowlog_timeout = 3s \/\/\u6162\u6267\u884c\u8d85\u65f6\u65f6\u95f4,\u53ef\u4ee5\u8bbe\u7f6e\u4e3a1\u79d2
\n1.2 \u6162\u67e5\u8be2\u65e5\u5fd7\u4f1a\u4ee5\u5806\u6808\u7684\u5f62\u5f0f\u6253\u5370\u6bcf\u4e2a\u811a\u672c\u6267\u884c\u8fc7\u7a0b\u4e2d\u8017\u65f6\u8f83\u957f\u7684\u5730\u65b9,\u683c\u5f0f\u5982\u4e0b(\u53ef\u4ee5\u8be6\u7ec6\u67e5\u770b\u6211\u4ee5\u524d\u53d1\u8868\u7684PHP\u6162\u65e5\u5fd7\u7684\u5206\u6790)
\n[\u65e5\u671f\u65f6\u95f4] [pool www] pid \u8fdb\u7a0b\u53f7
\nscript_filename = \u811a\u672c\u6587\u4ef6
\n[0x00007f2d286c2790] replace() \/xxx\/Plugin.php:72
\n[0x00007fff78ab00f0] replace() unknown:0
\n[0x00007f2d286c2420] call_user_func_array() \/xxx\/Plugin.php:489
\n[0x00007fff78ab0430] __call() unknown:0
\n[0x00007f2d286c1f78] contentEx() \/xxx\/Abstract\/Contents.php:141
\n[0x00007f2d286c1b78] ___content() \/xxx\/Widget.php:385
\n[0x00007f2d286c10f8] +++ dump failed
\n1.3 \u4f7f\u7528ll \/proc\/\u8fdb\u7a0b\u53f7\/fd\/ \u67e5\u770b,\u76ee\u524dPHP\u8fdb\u7a0b\u5728\u64cd\u4f5c\u4ec0\u4e48\u6587\u4ef6,
\n\u4f7f\u7528strace -o \/tmp\/output.txt -T -tt -F -e trace=all -p <\u8fdb\u7a0b\u53f7> \u6765\u8ddf\u8e2a\u8fdb\u7a0b(\u53ef\u67e5\u770b\u6211\u4ee5\u524d\u53d1\u8868\u7684strace\u547d\u4ee4\u7684\u4f7f\u7528)
\n[root@localhost www]# cat \/tmp\/output.txt
\n61905 18:00:40.169437 epoll_wait(8, {}, 1, 409) = 0 <0.410078>
\n61905 18:00:40.579997 getsockopt(7, SOL_TCP, TCP_INFO, “\\n\\0\\0\\0\\0\\0\\0\\0@B\\17\\0\\0\\0\\0\\0\\30\\2\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\200\\0\\0\\0″…, [104]) = 0 <0.000327>
\n61905 18:00:40.580786 epoll_wait(8, {}, 1, 1000) = 0 <1.001902>
\n61905 18:00:41.583271 getsockopt(7, SOL_TCP, TCP_INFO, “\\n\\0\\0\\0\\0\\0\\0\\0@B\\17\\0\\0\\0\\0\\0\\30\\2\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\200\\0\\0\\0″…, [104]) = 0 <0.000361>
\n61905 18:00:41.585020 epoll_wait(8, {}, 1, 999) = 0 <1.001523>
\n61905 18:00:42.587037 getsockopt(7, SOL_TCP, TCP_INFO, “\\n\\0\\0\\0\\0\\0\\0\\0@B\\17\\0\\0\\0\\0\\0\\30\\2\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\200\\0\\0\\0″…, [104]) = 0 <0.000408>
\n\u4e8c,\u7ed3\u5408\u4e0a\u8ff0\u7684\u65e5\u5fd7,\u5206\u6790\u53ef\u80fd\u51fa\u73b0\u7684\u95ee\u9898
\n2.1 php\u9519\u8bef\u65e5\u5fd7\u4e2d,\u5b58\u5728\u5927\u91cf\u7684\u5e38\u89c4\u9519\u8bef,\u4f8b\u5982mysql\u4f7f\u7528\u4e86\u4e8b\u52a1\u5bfc\u81f4\u6b7b\u9501
\n2.2 php\u6162\u67e5\u8be2\u65e5\u5fd7\u53ef\u4ee5\u77e5\u9053\u90a3\u4e9b\u51fd\u6570\u6bd4\u8f83\u8017\u65f6,\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u6269\u5c55\u6765\u5b9e\u73b0\u89e3\u51b3\u8017\u65f6\u95ee\u9898, \u4e5f\u6709\u53ef\u80fd\u662f\u4ee3\u7801\u4e2d\u5927\u91cf\u4f7f\u7528\u4e86file_get_contents\u7b49\u9ed8\u8ba4\u4e0d\u4f1a\u8d85\u65f6\u7684\u51fd\u6570
\n*file_get_contents\u4e00\u6b65\u5c31\u505a\u5b8c\u4e86\u6253\u5f00\uff0c\u8bfb\u53d6\uff0c\u5173\u95ed\u7684\u4e09\u4e2a\u52a8\u4f5c\uff0c\u8fc7\u7a0b\u76f8\u5f53\u81ea\u52a8\u5316\uff0c\u5e76\u4e14\u53ef\u4ee5\u8bfb\u53d6\u8fdc\u7a0b\u5185\u5bb9\uff0c\u975e\u5e38\u65b9\u4fbf\uff0c\u5728\u7f51\u7edc\u72b6\u51b5\u5dee\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u6267\u884c\u9677\u5165\u505c\u6ede\u6216\u8005\u8fc7\u6162\uff0c
\n\u56e0\u4e3a\u4e0d\u505c\u7684\u91cd\u8bd5\u548c\u7b49\u5f85PHP\u8fdb\u7a0b\u672c\u8eab\u7684\u8d85\u65f6\u624d\u4f1a\u9000\u51fa\u3002\u8be6\u60c5\u53ef\u4ee5\u67e5\u770b\u6211\u4ee5\u524d\u53d1\u8868\u8fc7\u7684\u5173\u4e8efile_get_contents(\u6269\u5c55\u51fd\u6570)\u7684\u5185\u90e8\u5b9e\u73b0\u5206\u6790\u7684\u5185\u5bb9
\n*\u8fd9\u4e2a\u95ee\u9898\u8fd8\u53ef\u4ee5\u6839\u636e\u8ddf\u8e2aPHP-FPM\u8fdb\u7a0b\u77e5\u9053,\u5982\u679c\u5b58\u5728\u5927\u91cf\u7684epoll\u6216select\u8d85\u65f6
\n2.3 \u67e5\u8be2TCP\u8fde\u63a5\u662f\u5426\u51fa\u73b0\u5927\u91cfTIME_WAIT,\u67e5\u8be2\u5177\u4f53\u539f\u56e0(\u53ef\u4ee5\u53c2\u8003\u6211\u4ee5\u524d\u53d1\u8868\u7684\u5173\u4e8eTCP\u7684\u5185\u5bb9\u548cHTTP Keep-Alive\u5728\u5f02\u5e38\u60c5\u51b5\u4e0b\u63a8TIME_WAIT\u7684\u5f71\u54cd)HTTP\u534f\u8bae1.1\u7248\u89c4\u5b9adefault\u884c\u4e3a\u662fKeep-Alive\uff0c
\n\u5c31\u662f\u4f1a\u91cd\u7528TCP\u8fde\u63a5\u4f20\u8f93\u591a\u4e2a\u8bf7\u6c42\/\u54cd\u5e94, \u8fd8\u6709\u5c31\u662f\u4ecenginx\u5230php-fpm\u7684\u539f\u5730\u5740\u90fd\u662f\u4e00\u6837,TCP\u8fde\u63a5\u5c31\u4f1a\u53d7\u9650\u5236,\u56e0\u4e3a\u9891\u7e41\u7684TCP\u8fde\u63a5\u5efa\u7acb\u548c\u5173\u95ed,\u4f1a\u5728\u670d\u52a1\u5668\u4e0a\u7559\u4e0bTIME_WAIT\u72b6\u6001,
\n\u7aef\u53e3\u4e00\u65e6\u8fdb\u5165\u670d\u52a1\u5668\u7684TIME_WAIT\u9ed1\u540d\u5355,\u5c31\u4f1a\u4ea7\u751f\u76f8\u5f53\u5927\u7684\u8d85\u65f6\u4e8e\u7b49\u5f85,\u751a\u81f3\u963b\u585e\u7b49\u5f85
\n*\u8be6\u7ec6\u53ef\u4ee5\u67e5\u8be2TIME_WAIT\u5bf9http\u7684\u5f71\u54cd\u4e00\u6587
\n\u4e09,\u6392\u67e5\u653b\u51fb\u95ee\u9898
\n*php\u662f\u4eba\u7c7b\u7684\u4e00\u4e2a\u4f1f\u5927\u7684\u4e1c\u897f,\u4f46\u4e0d\u4ee3\u8868\u4ed6\u6c38\u8fdc\u4e0d\u4f1a\u6709bugs, \u60f3\u4e86\u89e3\u53ef\u4ee5\u53bbbugs.php.net\u67e5\u770b
\n3.1 \u6839\u636e\u5e38\u89c4\u65e5\u5fd7,\u5206\u6790\u662f\u5426\u5b58\u5728\u6076\u610f\u8bf7\u6c42, \u4f8b\u5982\u8d85\u5927\u8868\u8fbe\u7684\u54c8\u5e0c\u653b\u51fb,\u6211\u4eec\u67e5\u770bPHP\u7684\u6570\u7ec4\u7684\u5b9e\u73b0\u539f\u7406\u53ef\u4ee5\u77e5\u9053,\u5b83\u662f\u4e00\u4e2ahash\u8868, \u5305\u62ec$_POST,$_GET, \u54c8\u5e0c\u8868\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u6570\u7ec4,\u6bcf\u4e2a\u5143\u7d20\u662f\u4e00\u4e2a\u94fe\u8868,
\n\u5f53\u5b58\u5728\u4e00\u4e2a\u6076\u610f\u7684post,post\u5927\u91cf\u7684a[]=1&a[]=1&a[]=1&a[]=1&…\u8fd9\u79cd\u5b57\u6bb5,\u4f1a\u5bfc\u81f4\u54c8\u5e0c\u78b0\u649e\u4ea7\u751f\u4e00\u4e2a\u8d85\u5927\u94fe\u8868,\u4ece\u800c\u5bfc\u81f4\u6548\u7387\u4e25\u91cd\u4e0b\u964d
\n*\u8be6\u60c5\u53ef\u4ee5\u53c2\u8003\u6211\u4ee5\u524d\u53d1\u8868\u7684\u5173\u4e8ePHP\u54c8\u5e0c\u8868\u78b0\u649e\u653b\u51fb\u7684\u5185\u5bb9
\n3.2 php-5\u7684PHP\u89e3\u6790multipart\/form-datahttp\u8bf7\u6c42\u7684body part\u8bf7\u6c42\u5934\u65f6\uff0c\u91cd\u590d\u62f7\u8d1d\u5b57\u7b26\u4e32\u5bfc\u81f4DOS\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u901a\u8fc7\u53d1\u9001\u6076\u610f\u6784\u9020\u7684multipart\/form-data\u8bf7\u6c42\uff0c\u5bfc\u81f4\u670d\u52a1\u5668CPU\u8d44\u6e90\u88ab\u8017\u5c3d\uff0c\u4ece\u800c\u8fdc\u7a0bDOS\u670d\u52a1\u5668\u3002
\n*\u6b64bugs\u6bd4\u8f83\u65b0,\u662f\u4eca\u5e74\u5e74\u4e2d\u7684bugs,\u4f30\u8ba1\u8fd8\u5b58\u5728\u5927\u91cf\u7684\u670d\u52a1\u5668\u5e76\u6ca1\u6709\u5b89\u88c5\u8865\u4e01(\u53ef\u4ee5\u53c2\u8003\u6211\u4e4b\u524d\u53d1\u8868\u7684PHP5\u7684\u4e25\u91cdbug, \u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u6ca1\u6709\u6362\u884c\u7b26\u5bfc\u81f4\u7684\u60e8\u5267)
\n3.3 \u5982\u679c\u6709\u5173\u6ce8PHP\u53d1\u5c55\u7684,\u4f1a\u77e5\u9053\u5f88\u591a\u5f88\u591a\u8fd9\u7c7b\u578b\u7684, \u4eba\u65e0\u5b8c\u4eba,\u8981\u6839\u636e\u5177\u4f53\u7684\u65e5\u5fd7\u548c\u95ee\u9898,\u6709\u53ef\u80fd\u8fd8\u80fd\u53d1\u73b0\u5e76\u63d0\u51fa\u65b0\u7684bug\u7ed9PHP\u5462
\n\u56db,\u7cfb\u7edf\u4f18\u5316\u65b9\u9762
\n4.1 \u4e0d\u662f\u8fdb\u7a0b\u5f00\u5f97\u8d8a\u591a\u8d8a\u597d; \u62ff\u774016\u6838\u7684CPU, \u5f00\u7740100\u591a\u4e2aPHP-FPM\u8fdb\u7a0b+100\u591a\u4e2anginx\u8fdb\u7a0b, \u7eaf\u5c5e\u88c5\u903c; cpu\u5728\u5207\u6362\u8fdb\u7a0b\u7684\u65f6\u5019\u4e0d\u7528\u529b\u5417?
\n4.2 \u5982\u679c\u4ee3\u7801\u548c\u7cfb\u7edf\u7684\u4f18\u5316\u90fd\u8fbe\u5230\u6700\u4f73\u72b6\u6001;\u53ef\u4ee5\u8003\u8651\u4f7f\u7528xcache\u6216\u8005apc\u7b49\u8fdb\u884copcode\u4f18\u5316,\u4ece\u800c\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u53bb\u89e3\u6790PHP\u811a\u672c,\u76f4\u63a5\u7f13\u5b58\u4e2d\u95f4\u4ee3\u7801,\u53ef\u4ee5\u63d0\u5347\u6570\u5341\u500d\u7684\u6027\u80fd<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00,\u5f00\u542f\u65e5\u5fd7\u8bb0\u5f55,\u4e3a\u4ee5\u540e\u6392\u67e5\u505a\u51c6\u5907 1.1 \u5f00\u542fphp-fpm.conf\u7684\u9519\u8bef\u65e5\u5fd7\u548c\u6162\u6267\u884c\u65e5\u5fd7\u548c\u5e38\u89c4\u65e5\u5fd7, \u91c7 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,6,10,1],"tags":[22],"_links":{"self":[{"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=\/wp\/v2\/posts\/235"}],"collection":[{"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=235"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=\/wp\/v2\/posts\/235\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaoxiaoliang.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}