apache 2.2 - SSL Library Error: -8181 Certificate has expired

After a yum update, there is an error when starting apache, in /var/log/httpd/error_log:

[notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[error] SSL Library Error: -8181 Certificate has expired
[error] Unable to verify certificate 'Server-Cert'. Add "NSSEnforceValidCerts off" to nss.conf so the server can start until the problem can be resolved.

Now I temporary put NSSEnforceValidCerts off in nss.conf to have the site running. How can I fix the error?

Answer

Seems that a certificate was created when mod_nss was installed.

This certificate has expired, preventing the restarting of httpd (Apache).

Do you really use mod_nss ?

If you aren't using mod_nss then your best bet is to simply uninstall the package.

However you have some alternatives :

• Remove nss.conf from /etc/httpd/conf.d (this will cause mod_nss to not be loaded).




• Uninstall/re-install your nss rpm modules. On re-installation a new
  certificate will be generated and your problem will go away for a
  few more years :

  
  
  

  rpm -e mod_nss
  rm /etc/httpd/alias/*
  
  yum install mod_nss
  service httpd restart