Instalé un sitio de WordPress en AWS EC2 t3.micro en la plataforma Linux/UNIX. La instancia ec2 deja de responder cada pocas horas. Eso significa que si trato de llamar al sitio web desde el navegador, aparece el mensaje «No se puede acceder a este sitio». El sitio vuelve a funcionar si reinicio la instancia desde la consola ec2. Las reglas de entrada para HTTP y HTTPS se establecen en 0.0.0.0/0. Hay un número de visitantes del sitio web. Hay 4.2G de espacio disponible en la instancia EC2. Las últimas entradas del registro de errores son:
[Tue Jul 12 09:01:50.142638 2022] [mpm_prefork:notice] [pid 566] AH00163: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 configured -- resuming normal operations
[Tue Jul 12 09:01:50.142711 2022] [core:notice] [pid 566] AH00094: Command line: '/usr/sbin/apache2'
[Tue Jul 12 10:23:11.216290 2022] [php:warn] [pid 1077] [client X.X.X.X:57861] PHP Warning: Undefined array key "referrer" in /var/www/html/wp-content/plugins/elementor-pro/modules/forms/classes/form-record.php on line 179, referer: https://SITE-NAME-REMOVED/contact-us/
[Tue Jul 12 10:23:11.217667 2022] [php:warn] [pid 1077] [client X.X.X.X:57861] PHP Warning: Undefined array key "referrer" in /var/www/html/wp-content/plugins/elementor-pro/modules/forms/classes/form-record.php on line 179, referer: https://SITE-NAME-REMOVED/contact-us/
sh: 1: /usr/sbin/sendmail: not found
[Mon Jul 11 00:00:01.527769 2022] [mpm_prefork:notice] [pid 570] AH00163: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 configured -- resuming normal operations
[Mon Jul 11 00:00:01.527800 2022] [core:notice] [pid 570] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jul 11 13:44:17.339898 2022] [mpm_prefork:notice] [pid 577] AH00163: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 configured -- resuming normal operations
[Mon Jul 11 13:44:17.347833 2022] [core:notice] [pid 577] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jul 11 13:44:26.721451 2022] [php:warn] [pid 727] [client x.X.x.x:35130] PHP Warning: Undefined array key "referrer" in /var/www/html/wp-content/plugins/elementor-pro/modules/forms/classes/form-record.php on line 179, referer: https://SITE-NAME-REMOVED/contact-us/
[Mon Jul 11 13:44:26.722285 2022] [php:warn] [pid 727] [client x.x.x.x:35130] PHP Warning: Undefined array key "referrer" in /var/www/html/wp-content/plugins/elementor-pro/modules/forms/classes/form-record.php on line 179, referer: https://SITE-NAME-REMOVED/contact-us/
sh: 1: /usr/sbin/sendmail: not found
[Mon Jul 11 14:37:11.427820 2022] [mpm_prefork:notice] [pid 577] AH00169: caught SIGTERM, shutting down
[Mon Jul 11 17:32:49.756249 2022] [mpm_prefork:notice] [pid 600] AH00163: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 configured -- resuming normal operations
[Mon Jul 11 17:32:49.756835 2022] [core:notice] [pid 600] AH00094: Command line: '/usr/sbin/apache2'
[Mon Jul 11 20:15:40.358852 2022] [mpm_prefork:notice] [pid 600] AH00169: caught SIGTERM, shutting down
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