LSAPI Engine (mod_proxy_lsapi)

The LSAPI Engine module serves PHP through persistent per-account LSPHP workers on plain Apache. It brings LSPHP to servers that have neither a CloudLinux nor a LiteSpeed license.

Installing

The module page is at /admin/modules/mod-proxy-lsapi, in the Module Manager.

What it gives you

• Persistent LSPHP workers per account, on plain Apache.
• A pool per account and PHP version, carrying the hosting plan's memory, CPU, and process limits.
• Admission control, so a burst of requests queues rather than overwhelming the pool.
• Pools reloaded in a rolling fashion when the LSPHP packages are updated, so an update does not drop requests.

Once it is installed, LSPHP appears next to the other PHP providers on the domain and hosting plan screens and on PHP Engine Migration.

Removing it

The module refuses to uninstall while a domain still uses LSPHP, and points you at the migration page. Move those domains back to another PHP provider first; the refusal is what stops an uninstall taking their sites down.

Related pages

• PHP Engine Migration - moving domains between PHP providers.
• PHP Versions - the versions available to sites.
• Module Manager - where modules are installed.
• Apache Settings - the web server this module extends.