How to switch between Apache, nginx and OpenLiteSpeed

How-to Websites and PHP apachenginxopenlitespeedweb serveredge

Change the public edge of a node, check which one is active, and understand the automatic rollback.

Only one process can own ports 80 and 443, so the edge is chosen per node. PHP-FPM and containers always listen on loopback behind it.

Steps

Check the current edge:
```
panel stack
```
Switch to another one (apache, nginx or litespeed):
```
panel stack nginx
```
The panel releases the ports, rewrites the PHP sockets and brings up the new edge.
Open a few sites and check them. If the new edge does not come up, the panel returns to the previous one by itself.

502 after a change: run panel stack to confirm which edge is active and look at Services.
A service you stopped stays stopped; start it from Services.
Combinations such as nginx with Varnish are not selectable from the panel yet.

Last updated: 2026-10-10