Httpd PidFile

External

• https://httpd.apache.org/docs/current/mod/mpm_common.html#pidfile

Internal

• httpd Configuration

Overview

The PidFile directive sets the file where the server records the process ID of the parent process. The file name can be absolute, or otherwise is considered to be relative to ServerRoot. The default value is "logs/httpd.pid".

Knowing the PID of the parent process is useful when we need to send Unix signals into the server, which is the recommended way to control its lifecycle.