Apache 2 + wsgi + flask无法加载Ubuntu 20.04 Azure VM上的主页(或-产生“504网关超时”)

kiz8lqtg  于 2023-06-30  发布在  Apache
关注(0)|答案(1)|浏览(120)

我正在尝试使用apache2 + wsgi在Azure Ubuntu 20.04 VM（标准E20as v5）上部署flask应用程序。
flask应用程序位于/var/www/html/FLASKAPP.web.tool/，Python venv位于/var/www/html/FLASKAPP.web.tool/flaskapp_venv。Python版本是3.9.17。
我可以毫无问题地启动Apache：

  1. ● apache2.service - The Apache HTTP Server
  2.      Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor prese>
  3.      Active: active (running) since Mon 2023-06-26 06:49:27 UTC; 8s ago
  4.        Docs: https://httpd.apache.org/docs/2.4/
  5.     Process: 1708 ExecStart=/usr/sbin/apachectl start (code=exited, status=0/SU>
  6.    Main PID: 1712 (apache2)
  7.       Tasks: 57 (limit: 193324)
  8.      Memory: 29.0M
  9.      CGroup: /system.slice/apache2.service
  10.              ├─1712 /usr/sbin/apache2 -k start
  11.              ├─1715 /usr/sbin/apache2 -k start
  12.              └─1716 /usr/sbin/apache2 -k start
  14. Jun 26 06:49:27 ServerName systemd[1]: Starting The Apache HTTP Server...
  15. Jun 26 06:49:27 ServerName systemd[1]: Started The Apache HTTP Server.

但是当在浏览器中键入VM的IP时，无论是HTTP还是HTTPS，我过去都会得到“504 GATEWAY TIMEOUT”，但现在（因为我扩展了apache conf文件中的Timeout参数），浏览器只是不断尝试加载页面而没有任何消息（甚至在10分钟后也没有...）。
这是错误日志中的错误：

  1. [Mon Jun 26 07:25:00.309224 2023] [wsgi:error] [pid 2989:tid 140305911248640] [client <IP>:58226] Timeout when reading response headers from daemon process 'flaskapp': /var/www/html/FLASKAPP.web.tool/app.wsgi

至于VM的网络，我认为它是开放的，因为：

  • 我添加了两个入站端口规则：一个用于端口80，一个用于端口443，协议=“任意”，源=“任意”，目的地=“任意”，操作=“允许”。
  • 在安装我的应用之前，当我在浏览器中输入VM的IP时，Apache默认主页就会出现。（我现在从/var/www/html/中删除了它）

这是应用配置文件/etc/apache2/sites-available/flaskapp.com.conf（这是/etc/apache2/sites-available/中唯一的文件，我删除了默认文件）：

  1. <VirtualHost *:443>
  2.    ServerName flaskapp.com
  3.    ServerAlias www.flaskapp.com
  4.    ServerAdmin Admin@localhost
  5.    DocumentRoot "/var/www/html/FLASKAPP.web.tool/"
  7.    WSGIProcessGroup flaskapp
  8.    WSGIDaemonProcess flaskapp request-timeout=600 processes=2 threads=20 user=www-data group=www-data python-home=/var/www/html/FLASKAPP.web.tool/ python-path=/var/www/html/FLASKAPP.web.tool/:/var/www/html/FLASKAPP.web.tool/flaskapp_venv/lib/python3.9/site-packages/
  9.    WSGIScriptAlias / /var/www/html/FLASKAPP.web.tool/app.wsgi
  10.    WSGIApplicationGroup %{GLOBAL}
  12.    <Directory "/var/www/html/FLASKAPP.web.tool/">
  13.       AllowOverride All
  14.       Require all granted
  15.    </Directory>
  17.     CustomLog /var/log/apache2/flaskapp.com-access_log combined
  18.     ErrorLog  /var/log/apache2/flaskapp.com-error_log
  19.     LogLevel  warn
  20.     SSLEngine on
  21.     SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1
  22.     SSLCipherSuite ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
  23.     SSLHonorCipherOrder on
  24.     SSLCertificateFile /etc/ssl/certs/wildcard.institution.com.crt
  25.     SSLCertificateKeyFile /etc/ssl/private/wildcard.institution.com.key
  26.     SSLCACertificateFile /etc/ssl/certs/institution-ca-bundle.crt
  27. </VirtualHost>
  29. <VirtualHost *:80>
  30.    ServerName flaskapp.com
  31.    ServerAlias www.flaskapp.com
  32.    DocumentRoot "/var/www/html/FLASKAPP.web.tool/"
  34.    WSGIProcessGroup flaskapp
  35. #  WSGIDaemonProcess flaskapp processes=2 threads=20 user=www-data python-home=/var/www/html/FLASKAPP.web.tool/ python-path=/var/www/html/FLASKAPP.web.tool/:/var/www/html/FLASKAPP.web.tool/flaskapp_venv/lib/python3.9/site-packages/
  36.    WSGIScriptAlias / /var/www/html/FLASKAPP.web.tool/app.wsgi
  37.    WSGIApplicationGroup %{GLOBAL}
  39.    <Directory "/var/www/html/FLASKAPP.web.tool/">
  40.       AllowOverride All
  41.       Require all granted
  42.    </Directory>
  44.    CustomLog /var/log/apache2/flaskapp.com-access_log combined
  45.    ErrorLog  /var/log/apache2/flaskapp.com-error_log
  46.    LogLevel  warn
  47. </VirtualHost>

下面是Apache配置文件/etc/apache2/apache2.conf：

  1. # This is the main Apache server configuration file.  It contains the
  2. # configuration directives that give the server its instructions.
  3. # See http://httpd.apache.org/docs/2.4/ for detailed information about
  4. # the directives and /usr/share/doc/apache2/README.Debian about Debian specific
  5. # hints.
  6. #
  7. #
  8. # Summary of how the Apache 2 configuration works in Debian:
  9. # The Apache 2 web server configuration in Debian is quite different to
  10. # upstream's suggested way to configure the web server. This is because Debian's
  11. # default Apache2 installation attempts to make adding and removing modules,
  12. # virtual hosts, and extra configuration directives as flexible as possible, in
  13. # order to make automating the changes and administering the server as easy as
  14. # possible.
  16. # It is split into several files forming the configuration hierarchy outlined
  17. # below, all located in the /etc/apache2/ directory:
  18. #
  19. #       /etc/apache2/
  20. #       |-- apache2.conf
  21. #       |       `--  ports.conf
  22. #       |-- mods-enabled
  23. #       |       |-- *.load
  24. #       |       `-- *.conf
  25. #       |-- conf-enabled
  26. #       |       `-- *.conf
  27. #       `-- sites-enabled
  28. #               `-- *.conf
  29. #
  30. #
  31. # * apache2.conf is the main configuration file (this file). It puts the pieces
  32. #   together by including all remaining configuration files when starting up the
  33. #   web server.
  34. #
  35. # * ports.conf is always included from the main configuration file. It is
  36. #   supposed to determine listening ports for incoming connections which can be
  37. #   customized anytime.
  38. #
  39. # * Configuration files in the mods-enabled/, conf-enabled/ and sites-enabled/
  40. #   directories contain particular configuration snippets which manage modules,
  41. #   global configuration fragments, or virtual host configurations,
  42. #   respectively.
  43. #
  44. #   They are activated by symlinking available configuration files from their
  45. #   respective *-available/ counterparts. These should be managed by using our
  46. #   helpers a2enmod/a2dismod, a2ensite/a2dissite and a2enconf/a2disconf. See
  47. #   their respective man pages for detailed information.
  48. #
  49. # * The binary is called apache2. Due to the use of environment variables, in
  50. #   the default configuration, apache2 needs to be started/stopped with
  51. #   /etc/init.d/apache2 or apache2ctl. Calling /usr/bin/apache2 directly will not
  52. #   work with the default configuration.
  54. # Global configuration
  55. #
  57. #
  58. # ServerRoot: The top of the directory tree under which the server's
  59. # configuration, error, and log files are kept.
  60. #
  61. # NOTE!  If you intend to place this on an NFS (or otherwise network)
  62. # mounted filesystem then please read the Mutex documentation (available
  63. # at <URL:http://httpd.apache.org/docs/2.4/mod/core.html#mutex>);
  64. # you will save yourself a lot of trouble.
  65. #
  66. # Do NOT add a slash at the end of the directory path.
  67. #
  68. #ServerRoot "/etc/apache2"
  70. #
  71. # The accept serialization lock file MUST BE STORED ON A LOCAL DISK.
  72. #
  73. #Mutex file:${APACHE_LOCK_DIR} default
  75. #
  76. # The directory where shm and other runtime files will be stored.
  77. #
  79. DefaultRuntimeDir ${APACHE_RUN_DIR}
  81. #
  82. # PidFile: The file in which the server should record its process
  83. # identification number when it starts.
  84. # This needs to be set in /etc/apache2/envvars
  85. #
  86. PidFile ${APACHE_PID_FILE}
  88. #
  89. # Timeout: The number of seconds before receives and sends time out.
  90. #
  91. Timeout 600
  93. #
  94. # KeepAlive: Whether or not to allow persistent connections (more than
  95. # one request per connection). Set to "Off" to deactivate.
  96. #
  97. KeepAlive On
  99. #
  100. # MaxKeepAliveRequests: The maximum number of requests to allow
  101. # during a persistent connection. Set to 0 to allow an unlimited amount.
  102. # We recommend you leave this number high, for maximum performance.
  103. #
  104. MaxKeepAliveRequests 100
  106. #
  107. # KeepAliveTimeout: Number of seconds to wait for the next request from the
  108. # same client on the same connection.
  109. #
  110. KeepAliveTimeout 5
  112. # These need to be set in /etc/apache2/envvars
  113. User ${APACHE_RUN_USER}
  114. Group ${APACHE_RUN_GROUP}
  116. #
  117. # HostnameLookups: Log the names of clients or just their IP addresses
  118. # e.g., www.apache.org (on) or 204.62.129.132 (off).
  119. # The default is off because it'd be overall better for the net if people
  120. # had to knowingly turn this feature on, since enabling it means that
  121. # each client request will result in AT LEAST one lookup request to the
  122. # nameserver.
  123. #
  124. HostnameLookups Off
  126. # ErrorLog: The location of the error log file.
  127. # If you do not specify an ErrorLog directive within a <VirtualHost>
  128. # container, error messages relating to that virtual host will be
  129. # logged here.  If you *do* define an error logfile for a <VirtualHost>
  130. # container, that host's errors will be logged there and not here.
  131. #
  132. ErrorLog ${APACHE_LOG_DIR}/error.log
  134. #
  135. # LogLevel: Control the severity of messages logged to the error_log.
  136. # Available values: trace8, ..., trace1, debug, info, notice, warn,
  137. # error, crit, alert, emerg.
  138. # It is also possible to configure the log level for particular modules, e.g.
  139. # "LogLevel info ssl:warn"
  140. #
  141. LogLevel warn
  143. # Include module configuration:
  144. IncludeOptional mods-enabled/*.load
  145. IncludeOptional mods-enabled/*.conf
  147. # Include list of ports to listen on
  148. Include ports.conf
  150. # Sets the default security model of the Apache2 HTTPD server. It does
  151. # not allow access to the root filesystem outside of /usr/share and /var/www.
  152. # The former is used by web applications packaged in Debian,
  153. # the latter may be used for local directories served by the web server. If
  154. # your system is serving content from a sub-directory in /srv you must allow
  155. # access here, or in any related virtual host.
  156. <Directory />
  157.         Options FollowSymLinks
  158.         AllowOverride None
  159.         Require all denied
  160. </Directory>
  162. <Directory /usr/share>
  163.         AllowOverride None
  164.         Require all granted
  165. </Directory>
  167. <Directory /var/www/>
  168.         Options Indexes FollowSymLinks
  169.         AllowOverride None
  170.         Require all granted
  171. </Directory>
  173. #<Directory /srv/>
  174. #       Options Indexes FollowSymLinks
  175. #       AllowOverride None
  176. #       Require all granted
  177. #</Directory>
  181. # AccessFileName: The name of the file to look for in each directory
  182. # for additional configuration directives.  See also the AllowOverride
  183. # directive.
  184. #
  185. AccessFileName .htaccess
  187. #
  188. # The following lines prevent .htaccess and .htpasswd files from being
  189. # viewed by Web clients.
  190. #
  191. <FilesMatch "^\.ht">
  192.         Require all denied
  193. </FilesMatch>
  195. #
  196. # The following directives define some format nicknames for use with
  197. # a CustomLog directive.
  198. #
  199. # These deviate from the Common Log Format definitions in that they use %O
  200. # (the actual bytes sent including headers) instead of %b (the size of the
  201. # requested file), because the latter makes it impossible to detect partial
  202. # requests.
  203. #
  204. # Note that the use of %{X-Forwarded-For}i instead of %h is not recommended.
  205. # Use mod_remoteip instead.
  206. #
  207. LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
  208. LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
  209. LogFormat "%h %l %u %t \"%r\" %>s %O" common
  210. LogFormat "%{Referer}i -> %U" referer
  211. LogFormat "%{User-agent}i" agent
  213. # Include of directories ignores editors' and dpkg's backup files,
  214. # see README.Debian for details.
  216. # Include generic snippets of statements
  217. IncludeOptional conf-enabled/*.conf
  219. # Include the virtual host configurations:
  220. IncludeOptional sites-enabled/*.conf
  222. # vim: syntax=apache ts=4 sw=4 sts=4 sr noet
  223. ServerName 127.0.0.1

/var/www/html/FLASKAPP.web.tool/app.wsgi：

  1. #!/var/www/html/FLASKAPP.web.tool/flaskapp_venv/bin/python3.9
  3. import sys
  4. sys.path.insert(0, '/var/www/html/FLASKAPP.web.tool')
  6. activate_this = '/var/www/html/FLASKAPP.web.tool/flaskapp_venv/bin/activate_this.py'
  7. with open(activate_this) as file_:
  8.     exec(file_.read(), dict(__file__=activate_this))
  10. from main import app as application

这是/var/www/html/FLASKAPP.web.tool/main.py：

  1. LOTS OF CODE...
  3. if __name__ == '__main__':
  4.     app.run()

我将/var/www/html/的所有权更改为www-data，因此ls -l /var/www/html/现在返回

  1. total 4
  2. drwxr-xr-x 7 www-data www-data 4096 Jun 26 06:56 FLASKAPP.web.tool

但没有用。
我将感激任何帮助。

apache

1条答案

按热度按时间
r1zhe5dt

r1zhe5dt1#

我在应用程序配置文件中将python-home=/var/www/html/FLASKAPP.web.tool/更改为python-home=/var/www/html/FLASKAPP.web.tool/flaskapp_venv，问题就解决了。然而，我后来遇到了另一个issue。

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