☰

Apache2 优雅重启停止代理对乘客的请求

tag-icon • tag-icon apache-2.2 phusion-passenger mod-proxy
Apache2 优雅重启停止代理对乘客的请求

apache mod proxy 的问题，它在优雅重启后停止代理请求，但并非总是如此。这种情况似乎只发生在星期日，当 logrotate 触发优雅重启时。

    [Sun Sep 9 05:25:06 2012] [notice] SIGUSR1 received.  Doing graceful restart
    [Sun Sep 9 05:25:06 2012] [notice] Apache/2.2.22 (Ubuntu) Phusion_Passenger/3.0.11 configured -- resuming normal operations
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(492) failed in child 26153 for worker proxy:reverse
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(486) failed in child 26153 for worker http://api.myservice.org/api
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(487) failed in child 26153 for worker http://api.myservice.org/editor/$1
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(489) failed in child 26153 for worker http://api.myservice.org/build
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(490) failed in child 26153 for worker http://api.myservice.org/help
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(491) failed in child 26153 for worker http://api.myservice.org/motd.html
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(480) failed in child 26153 for worker http://api.myservice.org/api
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(481) failed in child 26153 for worker http://api.myservice.org/editor/$1
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(483) failed in child 26153 for worker http://api.myservice.org/build
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(484) failed in child 26153 for worker http://api.myservice.org/help
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(485) failed in child 26153 for worker http://api.myservice.org/motd.html
    [Sun Sep 9 05:25:06 2012] [error] proxy: ap_get_scoreboard_lb(479) failed in child 26153 for worker http://api.myservice.org/motd.html

在这些行之后，日志中充斥着 404，因为请求没有被代理。值得注意的是，目标只是同一 Apache 实例上的另一个虚拟主机，但虚拟主机（http://api.myservice.org) 正在为乘客提供服务 (mod_rails)

我在想，也许存在一些启动问题，乘客工作人员在平稳重启期间尚未准备好？

完全重启后问题解决，一切恢复正常。

//编辑这里是 vhost 配置，谢谢:)

 <VirtualHost *:80>
      UseCanonicalName Off

      LogFormat "%V %h %l %u %t \"%r\" %s %b" vcommon

      <Directory /var/www/vhosts>
              RewriteEngine on
              AllowOverride All
      </Directory>

      RewriteEngine on
      RewriteCond /var/www/vhosts/%{SERVER_NAME} !-d
      RewriteCond /var/www/vhosts/%{SERVER_NAME} !-l
      RewriteRule ^ http://sitenotfound.myservice.org/ [R=302,L]

      VirtualDocumentRoot /var/www/vhosts/%0/current

      # Rewrite requests to /assets to map to the /var/file-store/<SERVER_NAME>/
      RewriteMap lowercase int:tolower
      RewriteCond %{REQUEST_URI} ^/assets/
      RewriteRule  ^/assets/(.*)$ /var/file-store/${lowercase:%{SERVER_NAME}}/$1

      # Map /login to /editor.html as it's far friendlier.
      RewriteCond %{REQUEST_URI} ^/login
      RewriteRule .* /editor.html [PT]

      # Forward some requests to the API
      ProxyPass /api http://api.myservice.org/api
      ProxyPass /site.json http://api.myservice.org/api/editor/site
      ProxyPassMatch ^/editor/(.*)$ http://api.myservice.org/editor/$1
      ProxyPassMatch ^/api/(.*) http://api.myservice.org/api/$1
      ProxyPass /build http://api.myservice.org/build
      ProxyPass /help http://api.myservice.org/help
      ProxyPass /motd.html http://api.myservice.org/motd.html

      <Proxy *>
              Order allow,deny
              Allow from all
      </Proxy>

      # TODO generate slightly more specific Error Documents for 401/403/500's, 
      # but for now the 404 page is good enough
      ErrorDocument 401 /404.html
      ErrorDocument 403 /404.html
      ErrorDocument 404 /404.html
      ErrorDocument 500 /404.html
 </VirtualHost>

答案1

我无法回答您关于代理的问题，除了似乎正确的一点，即工作程序无法通过优雅重启正确设置。但我建议，完全不需要重新启动 apache，无论是优雅重启还是其他方式，只是为了轮换日志。您只需要copytruncate在 logrotate 配置中使用选项；它不会移动文件，需要重新启动才能获取新的文件句柄，而是复制文件的内容并清空旧文件，这样 apache 就可以继续写入相同的文件句柄。

相关内容