{"id":8432,"date":"2025-04-29T10:08:45","date_gmt":"2025-04-29T02:08:45","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=8432"},"modified":"2025-04-29T10:08:44","modified_gmt":"2025-04-29T02:08:44","slug":"too-many-open-files%e5%bc%82%e5%b8%b8%e9%97%ae%e9%a2%98%e7%9a%84%e6%8e%92%e6%9f%a5","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=8432","title":{"rendered":"Too many open files\u5f02\u5e38\u95ee\u9898\u7684\u6392\u67e5"},"content":{"rendered":"

\u6982\u8981\u63cf\u8ff0<\/h3>\n
\n

\u5728linux\u7cfb\u7edf\u4e2d\u9075\u5faa\u4e00\u5207\u90fd\u662f\u6587\u4ef6\u7684\u539f\u5219\uff0c\u5373\u78c1\u76d8\u6587\u4ef6\u3001\u76ee\u5f55\u3001\u7f51\u7edc\u5957\u63a5\u5b57\u3001\u78c1\u76d8\u3001\u7ba1\u9053\u7b49\uff0c\u90fd\u662f\u6587\u4ef6\uff0c\u5728\u6211\u4eec\u8fdb\u884c\u6253\u5f00\u7684\u65f6\u5019\u4f1a\u8fd4\u56de\u4e00\u4e2afd\uff0c\u5373\u662f\u6587\u4ef6\u53e5\u67c4\u3002\u5982\u679c\u9891\u7e41\u7684\u6253\u5f00\u6587\u4ef6\uff0c\u6216\u8005\u6253\u5f00\u7f51\u7edc\u5957\u63a5\u5b57\u800c\u5fd8\u8bb0\u91ca\u653e\u5c31\u4f1a\u6709\u53e5\u67c4\u6cc4\u9732\u7684\u73b0\u8c61\u3002
\nlinux\u7cfb\u7edf\u4e2d\u5bf9\u8fdb\u7a0b\u53ef\u4ee5\u8c03\u7528\u7684\u6587\u4ef6\u53e5\u67c4\u6570\u8fdb\u884c\u4e86\u9650\u5236\uff0c\u5982\u679c\u8d85\u8fc7\u4e86\u9650\u5236\uff0c\u8fdb\u7a0b\u5c06\u65e0\u6cd5\u83b7\u53d6\u65b0\u7684\u53e5\u67c4\uff0c\u800c\u4ece\u5bfc\u81f4\u4e0d\u80fd\u6253\u5f00\u65b0\u7684\u6587\u4ef6\uff0c\u62a5\u9519too many open files\uff0c\u5373\u53e5\u67c4\u6570\u8d85\u51fa\u7cfb\u7edf\u9650\u5236\u3002\u8fd9\u91cc\u7684files\u4e0d\u5355\u662f\u6587\u4ef6\u7684\u610f\u601d\uff0c\u4e5f\u5305\u62ec\u6253\u5f00\u7684\u901a\u8baf\u94fe\u63a5(\u6bd4\u5982socket)\uff0c\u6b63\u5728\u76d1\u542c\u7684\u7aef\u53e3\u7b49\u3002<\/p>\n

\u8be6\u7ec6\u8bf4\u660e<\/h3>\n
\n

\u672c\u6587\u4e3b\u8981\u4ece\u4e24\u65b9\u9762\u6392\u67e5\uff0c\u4e00\u662f\u7cfb\u7edf\u914d\u7f6e\uff0c\u4e8c\u662f\u5e94\u7528\u5c42\u9762\u3002<\/p>\n

\u7cfb\u7edf\u914d\u7f6e<\/h4>\n

\u6839\u636e\u5e94\u7528\u6743\u9650\uff0c\u53c8\u5206\u4e3a\u7cfb\u7edf\u7ea7\u548c\u7528\u6237\u7ea7\u3002\u7cfb\u7edf\u7ea7\u7684\u4fee\u6539\u4f1a\u5bf9\u6240\u6709\u7528\u6237\u6709\u6548\uff0c\u800c\u7528\u6237\u7ea7\u53ea\u9650\u5236\u6bcf\u4e2a\u767b\u5f55\u7528\u6237\u7684\u53ef\u8fde\u63a5\u6587\u4ef6\u6570\u3002<\/p>\n

\u4fee\u6539\u7528\u6237\u7ea7\u522b\u9650\u5236<\/strong><\/p>\n

\u901a\u8fc7\u547d\u4ee4ulimit -a<\/strong>\u67e5\u770b\u5f53\u524d\u7cfb\u7edf\u8bbe\u7f6e\u7684\u6700\u5927\u53e5\u67c4\u6570\u662f\u591a\u5c11\uff0copen files<\/strong>\u90a3\u4e00\u884c\u5c31\u4ee3\u8868\u7cfb\u7edf\u76ee\u524d\u5141\u8bb8\u5355\u4e2a\u8fdb\u7a0b\u6253\u5f00\u7684\u6700\u5927\u53e5\u67c4\u6570\uff0c\u8fd9\u91cc\u662f327680\u3002
\nTDH\u96c6\u7fa4\u9ed8\u8ba4\u662f327680\uff0c\u666e\u901a\u60c5\u51b5\u4e0blinux\u9ed8\u8ba4\u662f1024\u3002
\n\"file\"<\/p>\n

\u7136\u540e\uff0c\u67e5\u770b\u4e0b\u5f53\u524d\u8fdb\u7a0b\u5360\u7528\u53e5\u67c4\u7684\u60c5\u51b5\uff1a<\/p>\n

\u67e5\u770b\u5168\u90e8\u8fdb\u7a0b\u5360\u7528\u53e5\u67c4\u6570\u603b\u548c\uff1a<\/p>\n

lsof | awk '{print $2}' | wc -l<\/code><\/pre>\n
\u8865\u5145<\/p>\n
\u67e5\u770b\u67d0\u4e00\u4e2a\u8fdb\u7a0b\u5360\u7528\u53e5\u67c4\u6570\uff1a<\/p>\n
ls -l \/proc\/\/fd | wc -l<\/code><\/pre>\n
\u67e5\u770b\u7cfb\u7edf\u4e2d\u8fdb\u7a0b\u6253\u5f00\u6587\u4ef6\u6570\u7684\u6392\u5e8f\uff1a<\/p>\n
lsof -n | awk '{print $2}' | sort | uniq -c | sort -nr | more<\/code><\/pre>\n
\u5982\u679c\u53e5\u67c4\u6570\u5360\u7528\u8fc7\u591a\uff0c\u5219\u53ef\u4ee5\u4fee\u6539\u6700\u5927\u53e5\u67c4\u6570\u9650\u5236\uff0c\u5982\uff1a
\n\u8bbe\u7f6e\u6700\u5927\u53e5\u67c4\u6570\u4e3a102400<\/p>\n
ulimit -SHn 102400<\/code><\/pre>\n
-H\uff1a\u8bbe\u7f6e\u786c\u4ef6\u8d44\u6e90\u9650\u5236\uff1b
\n-S\uff1a\u8bbe\u7f6e\u8f6f\u4ef6\u8d44\u6e90\u9650\u5236\uff1b
\n-n size\uff1a\u8bbe\u7f6e\u5185\u6838\u53ef\u4ee5\u540c\u65f6\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u6700\u5927\u503c\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u7684\u6700\u5927\u503c\u4e3a655350\u3002<\/p>\n
\u8fd9\u79cd\u65b9\u5f0f\u8bbe\u7f6e\u540e\u5728\u91cd\u542f\u540e\u4f1a\u8fd8\u539f\u4e3a\u9ed8\u8ba4\u503c\u3002
\n\u5982\u679c\u8981\u6c38\u4e45\u751f\u6548\uff0c\u9700\u8981\u4fee\u6539\u7cfb\u7edf\u914d\u7f6e\u6587\u4ef6\/etc\/security\/limits.conf<\/strong><\/p>\n
vim \/etc\/security\/limits.conf\n#\u5728\u6700\u540e\u6dfb\u52a0\n* soft nofile 102400\n* hard nofile 102400<\/code><\/pre>\n
\u7b2c\u4e00\u5217\u4e3a\u7528\u6237\u540d\uff0c*\u8868\u793a\u6240\u6709\u7528\u6237\u3002
\nhard\u7684\u8bbe\u7f6e\u662f\u5b9e\u9645\u7684\u9ed8\u8ba4\u503c\uff0c\u4e5f\u5c31\u662f\u4e0a\u9650\uff1b
\nsoft\u7684\u914d\u7f6e\u53ea\u662f\u7528\u6765\u8b66\u544a\u7684\uff0c\u5982\u679c\u8d85\u8fc7\u4e86soft\u7684\u503c\uff0c\u4f1a\u6709warn\uff1b<\/p>\n
\u6216\u8005\u53ea\u6dfb\u52a0<\/p>\n
* - nofile 102400<\/code><\/pre>\n
\uff08hard\u548csoft\u540c\u65f6\u914d\u7f6e\u7684\u65b9\u5f0f\uff0c\u662f\u6700\u7b80\u5355\u7684\u5168\u5c40\u8bbe\u7f6e\u3002\uff09<\/p>\n
\u4fee\u6539\u7cfb\u7edf\u7ea7\u522b\u9650\u5236<\/strong><\/p>\n
\u4e0a\u8ff0\u7684ulimit\u662f\u5bf9\u8fdb\u7a0b\u7684\u9650\u5236\uff0c\u5bf9\u7cfb\u7edf\u603b\u7684\u9650\u5236\u9700\u8981\u8bbe\u7f6efile-max\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u6765\u67e5\u770bfs.file-max\u7684\u914d\u7f6e\uff1a<\/p>\n
cat \/proc\/sys\/fs\/file-max\n\u6216\u8005\nsysctl -a<\/code><\/pre>\n
cat \/proc\/sys\/fs\/file-max<\/code><\/pre>\n
\u8868\u793a\u5f53\u524d\u5185\u6838\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u5927\u7684\u6587\u4ef6\u53e5\u67c4\u6570\uff0c\u4e00\u822c\u4e3a\u5185\u5b58\u5927\u5c0f\uff08KB\uff09\u768410%\uff0c\u4e00\u822c\u6211\u4eec\u4e0d\u9700\u8981\u4e3b\u52a8\u8bbe\u7f6e\u8fd9\u4e2a\u503c\uff0c\u9664\u975e\u8fd9\u4e2a\u503c\u786e\u5b9e\u8f83\u5c0f\u3002<\/p>\n
cat \/proc\/sys\/fs\/file-nr\n12640   0       727680<\/code><\/pre>\n
\u7b2c\u4e00\u4e2a\u6570\u5b57\u8868\u793a\u5f53\u524d\u7cfb\u7edf\u6253\u5f00\u7684\u6587\u4ef6\u6570\u3002\u7b2c\u4e09\u4e2a\u6570\u5b57\u548ccat \/proc\/sys\/fs\/file-max\u7ed3\u679c\u4e00\u6837\u8868\u793a\u5f53\u524d\u5185\u6838\u53ef\u4ee5\u6253\u5f00\u7684\u6700\u5927\u7684\u6587\u4ef6\u53e5\u67c4\u6570\u3002<\/p>\n
\u8bbe\u7f6e\u7684\u53ef\u4ee5\u5206\u4e3a\u4e34\u65f6\u6539\u52a8\u548c\u6c38\u4e45\u6539\u52a8\uff0c\u4e34\u65f6\u6539\u52a8\u76f4\u63a5\u53ef\u7528sysctl -w [\u53d8\u91cf\u540d]=[\u503c]\u6765\u89e3\u51b3\u3002\u4f8b\u5982\uff1a<\/p>\n
synctl -w fs.file-max=102400<\/code><\/pre>\n
\u6c38\u4e45\u6539\u52a8\u5c31\u9700\u8981\u4fee\u6539\/etc\/sysctl.conf<\/strong>\u6587\u4ef6\uff0c\u5982\u679c\u6587\u4ef6\u4e2d\u6ca1\u6709fs.file-max\u5c5e\u6027\uff0c\u5219\u6dfb\u52a0\u3002
\n\u8bbe\u7f6e\u5b8c\u6210\u540e\uff0c\u4f7f\u7528sysctl -p<\/strong>\u6765\u52a0\u8f7d\u7cfb\u7edf\u53c2\u6570\uff0c\u5728\u4e0d\u6307\u5b9a\u6587\u4ef6\u4f4d\u7f6e\u7684\u60c5\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u4f1a\u4ece\/etc\/sysctl.conf\u6587\u4ef6\u4e2d\u52a0\u8f7d\u3002<\/p>\n
\u5e94\u7528\u5c42\u9762<\/h4>\n
\u5e94\u7528\u5c42\u9762\u4e00\u822c\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f\u8fde\u63a5\u7684\u6cc4\u6f0f\uff08\u672a\u6b63\u786e\u5173\u95ed\uff09\u5bfc\u81f4\u3002<\/p>\n
\u6392\u67e5\u8fc7\u7a0b\uff1a<\/p>\n
\u67e5\u770bclose_wait\u8fde\u63a5\u6570\u91cf<\/p>\n
netstat -anp | grep CLOSE_WAIT \uff5c wc -l<\/code><\/pre>\n
\u67e5\u770b\u5177\u4f53PID\u7684\u8fde\u63a5\u6570\u91cf\uff08\u5355\u4e2a\u8282\u70b9\u7ec4\u4ef6\u4e5f\u4e0d\u4f1a\u592a\u591a\uff0c\u53ef\u4ee5\u9010\u4e00\u6392\u67e5\uff09<\/p>\n
netstat -anp | grep  | wc -l<\/code><\/pre>\n
\u5b9a\u4f4d\u5230\u67d0\u4e00\u4e2a\u5177\u4f53\u7684\u8fdb\u7a0b\u540e\uff0c\u53ef\u4ee5grep \u7aef\u53e3\uff0c\u5b9a\u4f4d\u6cc4\u6f0f\u8fde\u63a5\u7684\u53e6\u4e00\u7aef<\/p>\n
netstat -anp | grep <\/code><\/pre>\n
\u4f8b\u5982\u53d1\u73b0kafka\u7684jmx 9999 \u7aef\u53e3\u5b58\u5728\u5927\u91cf\u7684close_wait<\/p>\n
netstat -anp | grep 9999<\/code><\/pre>\n
\u8f93\u51fa\u5982\u4e0b<\/p>\n
tcp6       0      0 :::9999                 :::*                    LISTEN      16030\/java\ntcp6       0      0 172.16.2.27:9999        172.16.2.27:47155       ESTABLISHED 16030\/java\ntcp6       0      0 172.16.2.27:47155       172.16.2.27:9999        ESTABLISHED 1147\/java<\/code><\/pre>\n
\u5219\u53ef\u5224\u65ad1147\u4e3a\u8fde\u63a5\u7684\u53e6\u4e00\u7aef\u8fdb\u7a0b\u3002<\/p>\n
ps -ef | grep 1147<\/code><\/pre>\n
\u8f93\u51fa<\/p>\n
root      1147     1  1 8\u670831 ?       07:24:24 \/usr\/java\/latest\/bin\/java -agentpath:\/usr\/lib\/transwarp-manager\/agent\/lib\/native\/libagent.so -Xms512m -Xmx1024m -XX:MaxPermSize=128m -XX:+UseConcMarkSweepGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:\/var\/log\/transwarp-manager\/agent\/agent_gc.log -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=\/var\/log\/transwarp-manager\/agent -Dfile.encoding=UTF-8 -Dtranswarp.root.logger=INFO, R -Djava.io.tmpdir=\/tmp -Djava.library.path=\/usr\/lib\/transwarp-manager\/agent\/lib\/native -Dsun.net.client.defaultConnectTimeout=5000 -Dsun.net.client.defaultReadTimeout=5000 -Dsun.rmi.transport.tcp.handshakeTimeout=10000 -Dsun.rmi.transport.tcp.responseTimeout=15000 -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=48121 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -cp \/etc\/transwarp-manager\/agent:\/usr\/lib\/transwarp-manager\/agent\/lib\/*:\/usr\/lib\/transwarp-manager\/agent\/..\/common\/lib\/* io.transwarp.manager.agent.application.TranswarpAgent\nroot      5101  8751  0 12:27 pts\/0    00:00:00 grep --color=auto 1147<\/code><\/pre>\n
\u5f97\u5230\u7ed3\u8bba manager\u8fdb\u7a0b\u5230\u8bf7\u6c42kafka\u76849999 jmx\u76d1\u63a7\u7aef\u53e3\u53ef\u80fd\u672a\u6b63\u786e\u91ca\u653e\uff0c\u5b58\u5728\u95ee\u9898\u3002<\/p>\n
\u5982\u679cnetstat\u67e5\u770b\u4e00\u5207\u6b63\u5e38\uff0c\u90a3\u4e48\u53ef\u4ee5\u67e5\u770bproc\u76ee\u5f55\u4e0b\u5177\u4f53PID\u4e0bfd\u6587\u4ef6\u6570\u91cf.\uff08\u6b64\u5904\u7684\u6570\u91cf\u8fc7\u5927\u7684\u8fdb\u7a0b\uff0c\u540c\u6837\u662f\u5f02\u5e38\u7684\uff09<\/p>\n
 ls \/proc\/\/fd | wc -l<\/code><\/pre>\n
\u4f18\u5148\u5b9a\u4f4d\u5230\u5177\u4f53\u7684\u7ec4\u4ef6\u8fdb\u7a0b\uff0c\u7136\u540e\u518d\u8fdb\u4e00\u6b65\u7ed3\u5408\u7ec4\u4ef6\u65e5\u5fd7\u5206\u6790\u539f\u56e0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6982\u8981\u63cf\u8ff0 \u5728linux\u7cfb\u7edf\u4e2d\u9075\u5faa\u4e00\u5207\u90fd\u662f\u6587\u4ef6\u7684\u539f\u5219\uff0c\u5373\u78c1\u76d8\u6587\u4ef6\u3001\u76ee\u5f55\u3001\u7f51\u7edc\u5957\u63a5\u5b57\u3001\u78c1\u76d8\u3001\u7ba1\u9053\u7b49\uff0c\u90fd\u662f\u6587\u4ef6\uff0c\u5728\u6211 ..<\/p>\n
<\/div>\n
Read more<\/a><\/p>\n","protected":false},"author":105,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8432","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/8432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/105"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8432"}],"version-history":[{"count":1,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/8432\/revisions"}],"predecessor-version":[{"id":16407,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/8432\/revisions\/16407"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}