¿Por qué Apache funciona sólo con mpm-prefork?

¿Por qué Apache funciona sólo con mpm-prefork?

Tengo 2 sitios web de wordpress en LAMP (Linux, Apache2, MariaDB y PHP-FPM).

Si desactivo mpm-prefork y habilito mpm-worker o mpm-event, Apache muestra solo una página en blanco (tengo algunos sitios web de WordPress).

Lo extraño es que el registro no dice nada sobre los problemas.

Tengo la siguiente configuración de Apache

VirtualHost configuration:
*:80                   is a NameVirtualHost
         default server www.example.com (/etc/httpd24/conf.sh/example-80.conf:1)
         port 80 namevhost www.example.com (/etc/httpd24/conf.sh/example-80.conf:1)
                 alias example.com
         port 80 namevhost www.sub.example.com (/etc/httpd24/conf.sh/sub-80.conf:1)
                 alias sub.example.com
*:443                  is a NameVirtualHost
         default server ip-172-31-0-20.ec2.internal (/etc/httpd24/conf.d/ssl.conf:56)
         port 443 namevhost ip-172-31-0-20.ec2.internal (/etc/httpd24/conf.d/ssl.conf:56)
         port 443 namevhost www.example.com (/etc/httpd24/conf.sh/example.conf:1)
                 alias example.com
         port 443 namevhost www.sub.example.com (/etc/httpd24/conf.sh/sub.conf:1)
                 alias sub.example.com
ServerRoot: "/etc/httpd24"
Main DocumentRoot: "/var/www/html"
Main ErrorLog: "/etc/httpd24/logs/error_log"
Mutex authdigest-opaque: using_defaults
Mutex watchdog-callback: using_defaults
Mutex proxy-balancer-shm: using_defaults
Mutex rewrite-map: using_defaults
Mutex ssl-stapling-refresh: using_defaults
Mutex authdigest-client: using_defaults
Mutex lua-ivm-shm: using_defaults
Mutex ssl-stapling: using_defaults
Mutex proxy: using_defaults
Mutex authn-socache: using_defaults
Mutex ssl-cache: using_defaults
Mutex default: dir="/etc/httpd24/run/" mechanism=default 
Mutex mpm-accept: using_defaults
Mutex cache-socache: using_defaults
PidFile: "/etc/httpd24/run/httpd.pid"
Define: DUMP_VHOSTS
Define: DUMP_RUN_CFG
User: name="apache" id=48
Group: name="apache" id=48

Y estos son los módulos relevantes:

httpd24 -M | egrep  'proxy|http2|event'
 http2_module (shared)
 mpm_event_module (shared)
 proxy_module (shared)
 proxy_ajp_module (shared)
 proxy_balancer_module (shared)
 proxy_connect_module (shared)
 proxy_express_module (shared)
 proxy_fcgi_module (shared)
 proxy_fdpass_module (shared)
 proxy_ftp_module (shared)
 proxy_http_module (shared)
 proxy_hcheck_module (shared)
 proxy_scgi_module (shared)
 proxy_uwsgi_module (shared)
 proxy_wstunnel_module (shared)

La versión de los paquetes es:

httpd24-httpd-tools-2.4.34-22.el7.x86_64
rh-php73-php-fpm-7.3.20-1.el7.x86_64
httpd24-libnghttp2-1.7.1-8.el7.1.x86_64
httpd24-httpd-2.4.34-22.el7.x86_64
httpd24-mod_ssl-2.4.34-22.el7.x86_64
httpd24-runtime-1.1-19.el7.x86_64
httpd24-1.1-19.el7.x86_64

El sistema operativo es Centos 7:

uname -a ; cat /etc/redhat-release 
Linux ip-172-31-0-20.ec2.internal 3.10.0-1160.21.1.el7.x86_64 #1 SMP Tue Mar 16 18:28:22 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
CentOS Linux release 7.9.2009 (Core)

¿Por qué ocurre esto? ¿Cómo puedo arreglarlo?

Respuesta1

Intente aumentar su ErrorLog LogLevel para depurar.

https://httpd.apache.org/docs/2.4/mod/core.html#errorlog

información relacionada