Note

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AH00103 Error in Apache Error Log

How the Issue Manifests

  • Apache does not start. Errors similar to the following are found in /var/log/error_log:

    AH00015: Unable to open logs (24)Too many open files: AH00103: piped_log_spawn: unable to setup child process
'/usr/sbin/rotatelogs -l -f /home/user/var/domain.com/logs/transfer-%Y-%m-%d.log 86400'
AH00015: Unable to open logs (24)Too many open files: AH00103: piped_log_spawn: unable to setup child process
'/usr/sbin/rotatelogs -l -f /home/user/var/domain.com/logs/transfer-%Y-%m-%d.log 86400'
AH00015: Unable to open logs

Cause of the Issue

The Apache service has reached its open file limit.

How to Resolve

  1. Log in to the server at the CLI as root, either via SSH or from the terminal

  2. At the CLI, using a text editor, create a new file named /etc/systemd/system/httpd.service.d/limits.conf. The following uses the Vim text editor:

    vim /etc/systemd/system/httpd.service.d/limits.conf

  3. Add the following setting. This example sets the limit to 20000, however, this setting should be customized based on server needs:

    [Service]
LimitNOFILE=20000

  4. Save the file and exit the text editor

  5. Reload the daemon and restart Apache

    systemctl daemon-reload
systemctl restart httpd