How to Set Up OpenLiteSpeed on Ubuntu 24.04 LTS

Ubuntu 24.04 LTS with OpenLiteSpeed and PHP 8.4 LSAPI is the fastest web server stack available in 2025. This guide covers a complete production setup.

Step 1 — Prepare Ubuntu 24.04

sudo apt update && sudo apt upgrade -y
sudo apt install curl wget gnupg2 -y

Step 2 — Add OpenLiteSpeed Repository

sudo wget -O - https://repo.litespeed.sh | sudo bash
sudo apt update

Step 3 — Install OpenLiteSpeed and PHP 8.4

sudo apt install openlitespeed -y
sudo apt install lsphp84 lsphp84-common lsphp84-mysql   lsphp84-curl lsphp84-gd lsphp84-mbstring   lsphp84-xml lsphp84-zip lsphp84-redis   lsphp84-intl lsphp84-imagick -y

Step 4 — Configure PHP 8.4 JIT

sudo nano /usr/local/lsws/lsphp84/etc/php/8.4/litespeed/php.ini

[PHP]
memory_limit = 512M
max_execution_time = 300
upload_max_filesize = 128M
post_max_size = 128M

[opcache]
opcache.enable = 1
opcache.jit = tracing
opcache.jit_buffer_size = 256M
opcache.memory_consumption = 512
opcache.max_accelerated_files = 30000
opcache.validate_timestamps = 0

Step 5 — Set Admin Password

sudo /usr/local/lsws/admin/misc/admpass.sh

Step 6 — Enable and Start

sudo systemctl enable lsws --now
sudo systemctl status lsws

Step 7 — Configure Firewall

sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw allow 443/udp   # QUIC/HTTP3
sudo ufw allow 7080/tcp  # WebAdmin
sudo ufw enable

Step 8 — Access WebAdmin

https://your-server-ip:7080

Benchmark

ab -n 10000 -c 100 http://your-server-ip/

# Expected on 4-core server:
# Requests/sec: 15,000+
# Time/request: 6.6ms average

Conclusion

OpenLiteSpeed on Ubuntu 24.04 with PHP 8.4 JIT sets a new performance benchmark. Our team provides complete OpenLiteSpeed deployments for production environments.