PHP Startup: Unable to load dynamic library '*' cannot open shared object file: Too many open files in system)

Hello, This problem seems to "build up" over time (7-10 days in my case) and goes away after a reboot. It started to happen only after installing nginx (along with apache, as far as I understand from the sysadmin) This is what I see on /var/log//apache2/error_log :

[Fri Jun 05 18:49:45.018044 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'mysqli.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/mysqli.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/mysqli.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/mysqli.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/mysqli.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.018431 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'pdo_mysql.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_mysql.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_mysql.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_mysql.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_mysql.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.018784 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'pdo_odbc.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_odbc.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_odbc.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_odbc.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_odbc.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.019160 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'pdo_pgsql.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_pgsql.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_pgsql.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_pgsql.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_pgsql.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.019509 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'pdo_sqlite.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_sqlite.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_sqlite.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_sqlite.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/pdo_sqlite.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.019834 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'wddx.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/wddx.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/wddx.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/wddx.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/wddx.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.020206 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'xmlreader.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlreader.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlreader.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlreader.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlreader.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.020555 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: PHP Warning:  PHP Startup: Unable to load dynamic library 'xmlrpc.so' (tried: /opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlrpc.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlrpc.so: cannot open shared object file: Too many open files in system), /opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlrpc.so.so (/opt/cpanel/ea-php73/root/usr/lib64/php/modules/xmlrpc.so.so: cannot open shared object file: Too many open files in system)) in Unknown on line 0: /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.020630 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] AH01215: Fri Jun  5 18:49:45 2020 (49220): Fatal Error Unable to create lock file: Bad file descriptor (9): /usr/local/cpanel/cgi-sys/ea-php73, referer: https://domain/wp-admin/post-new.php?post_type=product
[Fri Jun 05 18:49:45.020643 2020] [cgi:error] [pid 5031] [client 000:000:000:000:0] End of script output before headers: ea-php73, referer:

What helpful information can I provide?

SamuelM

June 09, 2020 23:11

Hello @Abdulrahman Hassoun Thank you for contacting cPanel. Can you please let us know if your server uses CloudLinux? If so, please run the following command to determine if there have been any recent LVE faults: lveinfo --by-fault=any --period=1d --display-username --limit=0 --show-all
Best regards

Abdulrahman Hassoun

June 10, 2020 10:13

No, I don't use CloudLinux. Any alternatives for that command?

June 10, 2020 20:43

Hello again @Abdulrahman Hassoun Thank you for your update. The error indicates that your server's open files limit was reached. You will likely need to either increase the limit, or identify what is causing the limit to be reached. Can you please reply with the results of the following commands?

cat /etc/redhat-release
cat /usr/local/cpanel/version
ulimit -n
cat /proc/sys/fs/file-max
grep nofile /etc/security/limits.conf
grep FD /etc/sysconfig/httpd

Thank you

June 11, 2020 15:41

Sure, here we go:

[root@fi ~]# cat /etc/redhat-release
CentOS Linux release 7.8.2003 (Core)
[root@fi ~]# cat /usr/local/cpanel/version
11.88.0.9
[root@fi ~]# ulimit -n
100000
[root@fi ~]# cat /proc/sys/fs/file-max
131072
[root@fi ~]# grep nofile /etc/security/limits.conf
#        - nofile - max number of open file descriptors
*               soft    nofile          100000
*               hard    nofile          100000
[root@fi ~]# grep FD /etc/sysconfig/httpd
# cPanel Specific Variables to allow users to override FD limits
#MIN_FD_LIMIT=10000
#MAX_FD_LIMIT=60000
[root@fi ~]#

I must mention that I don't receive a large number of (legitimate) traffic, almost not at all - less than 200 random visitors across all the day, across all PHP sites on the server. Most sites are up-to-date WordPress sites

June 11, 2020 20:36

Hello @Abdulrahman Hassoun The open files limit for your server is quite high. Based on the information available, it's difficult to infer why the "Too many open files in system" is repeatedly being logged to the Apache error log. I encourage you to submit a ticket using the link in my signature so that our Technical Analysts can investigate this further. Best regards

June 12, 2020 07:37

Support ticket is created 93497927

andrew.n

June 12, 2020 20:18

by any chance are you on a VPS? Is it OpenVZ based?

Josecarlosne

June 13, 2020 15:12

Buenas tardes, instal" WHMCS, con el instalador de softaculous, toda la instalaci"n se hace de manera correcta, pero no puedo acceder al log de administraci"n, en la carpeta public_html el erro_log : PHP Warning: PHP Startup: Unable to load dynamic library '/opt/php71/lib/php/extensions/no-debug-non-zts-20160303/ixed.7.1.lin' - /opt/php71/lib/php/extensions/no-debug-non-zts-20160303/ixed.7.1.lin: cannot open shared object file: No such file or directory in Unknown on. Gracias por su ayuda

June 15, 2020 09:20

you are missing SourceGuardian PHP extension but please open a new thread.

PHP Startup: Unable to load dynamic library '*' cannot open shared object file: Too many open files in system)

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