How can I switch the MPM mode for the Apache web server in Plesk?

kb: how-to Plesk for Linux

Applicable to:

Via Plesk UI

You can switch the MPM (Multi-Processing Module) mode in Plesk by following these steps:

1. Log into Plesk

2. Go to Tools & Settings > Apache Web Server

3. Select the desired MPM mode from the ones available in the dropdown

4. Scroll down and press Apply

Via CLI

Connect to the server via SSH
Run the following command with either prefork or event:

# plesk bin optimization_settings --set-mpm prefork