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Servers

Web stack

nginx or OpenLiteSpeed, PHP 7.4–8.5, PHP extensions such as ionCube, Node.js, Python and switching web servers.

The Web stack card at the top of a server's Sites section shows everything the server needs to serve sites: the web server, PHP versions, PHP extensions, Node.js, Python and the web application firewall. Installed versions are detected; pick what you need and click Install / update.

Web server

Choose nginx or OpenLiteSpeed once; it serves every site on the server. Both are installed from repositories with pinned signing keys.

Switching between nginx and OpenLiteSpeed

Switch to OpenLiteSpeed (or Switch to nginx) moves a running server to the other web server in place:

  1. Zefily installs the other web server and its PHP,
  2. rewrites every site for it (certificates already on the server are reused),
  3. checks that every site still answers as before,
  4. removes the old web server.

Sites are unavailable for up to a minute. If any site stops answering, the server switches back on its own. The switch needs your passkey.

PHP

PHP runs as PHP-FPM with one pool per site (OpenLiteSpeed uses LSPHP). Pick the versions you need; several can run side by side and each site chooses its own.

  • 8.2–8.5 are current versions.
  • Show older versions reveals 7.4, 8.0 and 8.1 for moving legacy apps. They no longer get security fixes: use them only to migrate, then upgrade.
  • On Ubuntu 26.04 only PHP 8.5 is available so far.

Per-site limits and php.ini settings are on the site's PHP pane — see PHP settings.

PHP extensions

The PHP extensions list adds extensions to every PHP version on the server, for example apcu, imagick, intl, mongodb, redis, soap, gmp, xdebug and ionCube Loader. Checked extensions are loaded now. ionCube is downloaded from ionCube's own server and loaded first as a Zend extension for every PHP version.

Node.js and Python

Install Node.js (22, 24, 26) and Install Python (3.12–3.14) when you run Node or Python apps; the apps themselves run as managed systemd services. See Node.js and Python apps.

Web application firewall

Install WAF adds ModSecurity with the OWASP Core Rule Set. It does nothing until you turn it on per site (Detect only or Block) — see Access, caching and protection.

Tuning

After the stack is installed, and whenever a site is added or removed, Zefily tunes nginx, PHP-FPM, OPcache and the kernel for the server's hardware. See Performance and autotune.

Updated October 18, 2026

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