How to customize the pm setting in PHP-FPM

Introduction

This article will show you how to customize the 'pm' setting in PHP-FPM configuration globally or for an individual domain(s) PHP-FPM configuration. The default value of the 'pm' setting is 'on-demand.'

Please note that cPanel, LLC only supports the cPanel-provided software and does not provide general system-administration or site optimization services. You may, therefore, wish to seek assistance from a qualified system administrator for further guidance on PHP configuration.

System Administration Services

More information on the pm setting can be found here: 

php.net - PHP-FPM Configuration

Procedure

Global

1. Connect to your server via SSH or WHM >> Terminal as root.

2. Create the /var/cpanel/ApachePHPFPM/ directory:

mkdir -v /var/cpanel/ApachePHPFPM/

3. Create the /var/cpanel/ApachePHPFPM/system_pool_defaults.yaml file:

touch /var/cpanel/ApachePHPFPM/system_pool_defaults.yaml

4. Open the /var/cpanel/ApachePHPFPM/system_pool_defaults.yaml file using any preferred command-line text editor, such as vi, vim, nano, etc. (See: How to edit a file on command-line)

5. Add the following contents to the file and customize the 'pm' setting by replacing $VALUE with the desired value:

---
pm: $VALUE

Example:

---
pm: dynamic

5. Save and close the file.

6. Run the following script to load the change:

/scripts/php_fpm_config --rebuild

Individual domain(s)

1. Connect to your server via SSH or WHM >> Terminal as root.

2. Create a /var/cpanel/userdata/$USER/$DOMAIN.TLD.php-fpm.yaml file (replace $USER with the cPanel username and $DOMAIN.TLD with the domain name):

touch /var/cpanel/userdata/$USER/$DOMAIN.TLD.php-fpm.yaml

Example:

touch /var/cpanel/userdata/exampleuser/example.tld.php-fpm.yaml

3. Open the file using any preferred command-line text editor. (See: How to edit a file on command-line)

4. Add the following contents to the file and customize the 'pm' setting by replacing $VALUE with the desired value:

---
_is_present: 1
pm: $VALUE

Example:

---
_is_present: 1
pm: dynamic

5. Save and close the file.

6. Run the following script to load the change:

/scripts/php_fpm_config --rebuild