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We are aware of an issue with a recent Apache update that causes proxied sites to return a "421 Misdirected Request" error. Please see the following article for more information and updates:
Websites show 421 Misdirected Request error while using EA Nginx

Cannot load /usr/lib64/apache2/modules/mod_proxy.so into server: /usr/lib64/apache2/modules/mod_proxy.so: undefined symbol: ap_get_pollfd_from_conn

Sean Bailey
  • Updated

Symptoms

When restarting the httpd service, you encounter an error similar to the following.

restartsrv_httpd[55834]: httpd: Syntax error on line 28 of /etc/apache2/conf/httpd.conf: Syntax error on line 2 of /etc/apache2/conf.modules.d/280_mod_proxy.conf: Cannot load modules/mod_proxy.so into server: /etc/apache2/modules/mod_proxy.so: undefined symbol: ap_get_pollfd_from_conn

 

Description

The error occurs when one or more files provided by the ea-apache24 package are corrupt or missing.

 

Workaround

  1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
  2. Reinstall the ea-apache24 package.
    • CentOS 7, CloudLinux 7 
      yum reinstall ea-apache24
    • AlmaLinux 8/9, CloudLinux 8/9, Rocky Linux 8/9 
      dnf reinstall ea-apache24
    • Ubuntu 
      apt install --reinstall ea-apache24

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