{"id":208951,"date":"2020-11-25T16:29:48","date_gmt":"2020-11-25T08:29:48","guid":{"rendered":"http:\/\/4563.org\/?p=208951"},"modified":"2020-11-25T16:29:48","modified_gmt":"2020-11-25T08:29:48","slug":"linux-%e7%9a%84-reuseport-%e7%89%b9%e6%80%a7","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=208951","title":{"rendered":"Linux \u7684 ReusePort \u7279\u6027"},"content":{"rendered":"
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Linux \u7684 ReusePort \u7279\u6027 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : firejoke <\/span> <\/i> 4<\/span> <\/div>\n
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\u6700\u8fd1\u5728\u770b Django-channels, \u56e0\u4e3a\u81ea\u5e26\u7684 daphne asgi \u670d\u52a1\u5668\u672c\u8eab\u6ca1\u6709\u63d0\u4f9b\u591a worker \u7684\u5de5\u4f5c\u65b9\u5f0f,
\u800c\u6587\u6863\u5185\u63a8\u8350\u7684\u90e8\u7f72\u65b9\u6848\u662f\u7528 supervisor \u505a\u8fdb\u7a0b\u7ba1\u7406,
\u4f46\u8003\u8651\u5230\u672c\u6765\u7cfb\u7edf\u4e0a\u5c31\u6709 systemd, \u6240\u4ee5\u5c1d\u8bd5\u7528 systmed \u6765\u505a\u8fdb\u7a0b\u7ba1\u7406,
\u7528 systemd.socket \u76d1\u542c\u6307\u5b9a\u7aef\u53e3, \u5728\u6536\u5230\u8fde\u63a5\u540e, \u542f\u7528\u5bf9\u5e94\u7684\u670d\u52a1, \u5e76\u628a socket \u4f20\u9012\u7ed9\u670d\u52a1,
\u5148\u8d34\u4e00\u4e0b\u5355\u4e2a\u8fdb\u7a0b\u7684 dc.socket \u548c dc.service \u6587\u4ef6<\/p>\n

# dc.socket [Unit] Description= Django Channels socket  [Socket] ListenStream=0.0.0.0:9001  [Install] WantedBy=sockets.target <\/code><\/pre>\n
# dc.service [Unit] Description=Django Channels Requires=veops1.socket  [Service] Type=simple WorkingDirectory=\/project_path\/ NonBlocking=true ExecStart=\/project_path\/virtenv\/bin\/daphne -e systemd:domain=INET:index=0  -s DC --access-log \/var\/log\/dc\/daphne_access1.log dc.asgi:application ExecReload=\/bin\/kill -HUP $MAINPID KillSignal=SIGQUIT KillMode = control-group Restart=on-failure RestartSec=10s User=root Group=root   [Install] WantedBy=multi-user.target <\/code><\/pre>\n
\u8fd9\u6837\u53ea\u80fd\u542f\u7528\u4e00\u4e2a\u8fdb\u7a0b, \u5982\u679c\u8981\u50cf supervisor \u90a3\u6837\u591a\u4e2a\u8fdb\u7a0b\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3, \u9700\u8981\u7528\u5230\u4ece Linux kernel 3.9 \u5f00\u59cb\u589e\u52a0\u7684 SO_REUSEPORT \u7279\u6027, \u628a\u4e4b\u524d\u7684\u5b9e\u4f8b\u914d\u7f6e\u53d8\u6210\u6a21\u677f\u914d\u7f6e [email protected] \u548c [email protected] \u6587\u4ef6\u8f6c\u53d8\u6210\u6a21\u677f, \u50cf\u8fd9\u6837<\/p>\n
# [email protected] [Unit] Description= Django Channels %i socket  [Socket] ListenStream=0.0.0.0:9001 ReusePort=true [email protected]%i.service  [Install] WantedBy=sockets.target <\/code><\/pre>\n
# [email protected] [Unit] Description= Django Channels %i [email protected]%i.socket  [Service] Type=simple WorkingDirectory=\/project_path\/ ExecStart=\/project_path\/virtenv\/bin\/daphne -e systemd:domain=INET:index=0  -s DC --access-log \/var\/log\/dc\/daphne%i.log dc.asgi:application NonBlocking=yes ExecReload=\/bin\/kill -HUP $MAINPID KillMode = control-group Restart=on-failure RestartSec=10s User=root  [Install] WantedBy=multi-user.target <\/code><\/pre>\n
\u7528
 systemctl start [email protected]
 systemctl start [email protected]
 systemctl start [email protected]
 …
 \u53ef\u4ee5\u751f\u6210\u591a\u4e2a service \u5b9e\u4f8b\u5e76\u76d1\u542c\u540c\u4e00\u4e2a\u7aef\u53e3
 \u6240\u6709\u8bbf\u95ee\u8fd9\u4e2a\u7aef\u53e3\u7684\u8fde\u63a5\u90fd\u4f1a\u88ab\u5206\u53d1\u7ed9\u5404\u4e2a\u8fdb\u7a0b<\/p>\n
\u6d4b\u8bd5\u73af\u5883:
 system-release: CentOS Linux release 7.9.2009 (Core)
 uname: 3.10.0-1160.6.1.el7.x86_64
 \u542f\u7528\u7b2c\u4e8c\u4e2a socket \u7684\u65f6\u5019\u62a5\u9519\u4e86<\/p>\n
failed to listen on sockets: Address already in use <\/code><\/pre>\n
\u770b\u8d77\u6765 ReusePort \u5e76\u6ca1\u6709\u751f\u6548
 \u4f46\u653e\u5728 Centos8, kernel 4.19 \u4e0a\u5374\u53ef\u4ee5\u751f\u6548,
 \u6000\u7591\u662f\u7cfb\u7edf\u6709\u8fd9\u4e2a\u7279\u6027, \u4f46 systemd \u6ca1\u6709\u542f\u7528, \u641c\u4e86\u4e00\u756a\u4e5f\u6ca1\u641c\u5230
 \u6709\u5728 3.10 \u4e0a\u7528 systemd \u4f7f\u7528\u8fc7\u8fd9\u4e2a\u7279\u6027\u7684\u5417?
 \u5e0c\u671b\u80fd\u544a\u8bc9\u6211\u4e00\u4e0b\u662f\u4e0d\u662f\u8981\u6539\u4ec0\u4e48\u914d\u7f6e<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (9<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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  • \n
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     \u8cc7\u6df1\u5927\u4f6c : warcraft1236 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5347\u7ea7\u5427\uff0c\u73b0\u5728\u5185\u6838\u90fd 5 \u5f00\u5934\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : 50infivedays <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 3.10 \u53ef\u4ee5\u7528\u7684 \u5e94\u8be5\u662f\u914d\u7f6e\u9519\u4e86 \u8981\u8bbe\u7f6e socket option \u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : boboliu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 systemd \u5bf9 reuseport \u5f15\u5165\u8fd8\u633a\u65e9\u4e86\uff0cv206 \u5c31\u6709\uff0ccentos7 \u7684\u5305\u8fd8\u6ca1\u8fd9\u4e48\u8001<\/p>\n
    \u662f\u4e0d\u662f\u6ca1\u5173\u5e72\u51c0\u4e0d reuse \u7684                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : firejoke <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @boboliu #3 \u6ca1\u6709, \u8fd9\u662f\u4e2a\u6d4b\u8bd5\u73af\u5883, \u4e5f\u68c0\u67e5\u4e86\u7aef\u53e3\u5360\u7528                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : firejoke <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @50infivedays #2 \u4f60\u8bf4\u7684 socket option \u662f\u6307 service \u6587\u4ef6\u5185\u7684\u5417, 
    \u6211\u5355\u72ec\u542f [email protected] socket [email protected] \u4e5f\u4e0d\u884c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : julyclyde <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 systemd \u4f20\u9012\u7684 socket\uff0c\u662f listen socket \u8fd8\u662f accepted FD \u5462\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : firejoke <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @julyclyde #6 \u4f20\u9012\u7684\u5e94\u8be5\u662f fd 
    https:\/\/www.freedesktop.org\/software\/systemd\/man\/systemd.socket.html#
    “`
    Note that the daemon software configured for socket activation with socket units needs to be able to accept sockets from systemd, either via systemd’s native socket passing interface (see sd_listen_fds(3) for details about the precise protocol used and the order in which the file descriptors are passed) or via traditional inetd(8)-style socket passing (i.e. sockets passed in via standard input and output, using StandardInput=socket in the service file).
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : julyclyde <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u539f\u6765\u4e24\u79cd\u90fd\u884c\u554a\uff1f
    \u524d\u8005\u4f3c\u4e4e\u633a\u9ad8\u7ea7\u7684\uff0c\u770b\u8d77\u6765\u662f\u9700\u8981\u7279\u5730\u7f16\u7a0b\u624d\u80fd\u652f\u6301\u7684\u529f\u80fd
    \u89c1\u8fc7 docker.service \u548c docker.socket \u5c31\u662f\u8fd9\u79cd\u5173\u7cfb<\/p>\n
    \u540e\u8005 inetd-style \u7684\u8bdd\u5176\u5b9e\u5c31\u662f stdio \u6a21\u5f0f\u4e86\uff0c\u5e94\u7528\u7a0b\u5e8f\u81ea\u5df1\u5e76\u4e0d\u8d1f\u8d23\u591a\u8fdb\u7a0b\u7ba1\u7406\u7684\uff0c\u6bcf\u4e2a accept \u5c31\u7ed9\u4e00\u4e2a\u5355\u72ec\u7684\u8fdb\u7a0b\u5904\u7406                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : firejoke <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @julyclyde #8 \u4f46\u6211\u7684\u95ee\u9898\u8fd8\u662f\u6ca1\u627e\u5230\u539f\u56e0, \u540c\u6837\u7684 sokcet \u914d\u7f6e, \u5728 centos8 kernel 4.x \u4e0a\u53ef\u4ee5, centos7 kernel 3.10 \u5c31\u62a5\u9519\u4e86…
    \u76ee\u524d\u552f\u4e00\u53d1\u73b0\u7684\u533a\u522b\u5c31\u662f
    \/usr\/include\/asm-generic\/socket.h \u91cc\u9762\u548c REUSEPORT \u6709\u5173\u7684, \u5728 centos8 \u591a\u4e86\u51e0\u4e2a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    Linux \u7684 ReusePort…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/208951"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=208951"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/208951\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=208951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=208951"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=208951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}