Requirements

Operating system#

Keep the server on the latest minor release (dnf update); NexPanel installs packages from the current repositories.

Differences on version 10#

• Valkey instead of Redis. AlmaLinux 10 ships Valkey, a Redis-compatible store on the same port. NexPanel uses it for the panel's cache and for the mail filter; nothing changes for you.
• Mail lookup tables use LMDB. Postfix on version 10 has no Berkeley DB; NexPanel writes LMDB maps there.
• The default AlmaLinux 10 images need a CPU with x86-64-v3 (AVX2, roughly 2015 or newer). For older CPUs use AlmaLinux's x86-64-v2 build.

Ubuntu and Debian are not supported yet. Install on a fresh, minimal server: NexPanel installs and manages the web server, PHP, MariaDB and mail itself.

Hardware#

These are starting points; size up for the number of sites you host.

Before you install#

• Root access to the server (the installer must run as root).
• cgroup v2 — the default on AlmaLinux 9 and 10. The LVE manager needs it.
• No other control panel on the server (cPanel, Plesk, DirectAdmin, CloudLinux LVE).
• OpenSSL 3 — included in AlmaLinux 9 and 10; used to check release signatures.
• For a controller with its own domain: a DNS record pointing the domain at the server, so a Let's Encrypt certificate can be issued.
• Ports: 80 and 443 for websites; 2083, 2087 and 2096 for the panels in all-in-one mode; 25, 465, 587, 993, 995 if you host email.

LiteSpeed Enterprise#

NexPanel can run LiteSpeed Enterprise, but it needs your own LiteSpeed license. When the license expires LiteSpeed stops serving sites; NexPanel shows a Web server down incident on the node overview. You can switch the node to Nginx, Apache, Nginx + Apache or OpenLiteSpeed at any time — see Web servers.