SOLVED glibc update on CentOS 7.4 results in Apache failure

Hello,

Internal case CPANEL-15830 is open to address an issue where updates to the glibc package in CentOS 7.4 result in Apache failing on systems using EasyApache 4 and Mod_Security. Here's an example of the output you will see in /usr/local/apache/error_log when this happens:

Code:

httpd: Syntax error on line 27 of /etc/apache2/conf/httpd.conf: Syntax error on line 14 of /etc/apache2/conf.modules.d/800-mod_security2.conf: Cannot load modules/mod_security2.so into server: /lib64/libm.so.6: symbol __strtold_nan, version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference

This is automatically fixed on systems with monitoring enabled for "Apache Web Server" in "WHM >> Service Manager". Otherwise, manually restarting Apache using "WHM Home » Restart Services » HTTP Server (Apache)" or with the following command will correct this issue:

Code:

/scripts/restartsrv_httpd

I'll monitor the status of case CPANEL-15830 and update this thread with more information as it becomes available.

Thank you.

 

Hello @PeteS,

I moved those questions into their own separate threads:

New Thread - Service Manager Question
New Thread - R1Soft Backups failing

Thank you.

 

Hello,

To update, the following case is planned for inclusion in an EasyApache 4 maintenance release on 09-20-2017 to ensure Apache is restarted whenever glibc is updated through YUM:

EA-6808: restart apache when glibc is updated

Thank you.