Server setup

Below instructions are working only on AlmaLinux 9

For other OS's need to be adapted accordingly

Starting point

A server with AlmaLinux 9 freshly installed, with root access and updated

Update OS

dnf update

Create a new user with sudo permissions

useradd dotkernel

passwd dotkernel

usermod -aG wheel dotkernel

reboot

SSH to the server as new user

Install various utilities

sudo dnf install -y dnf-utils

sudo dnf install zip unzip socat wget

PHP

sudo dnf install -y https://rpms.remirepo.net/enterprise/remi-release-9.rpm

sudo dnf module enable php:remi-8.4

sudo dnf install -y php php-cli php-common php-intl

Start PHP-FPM

sudo systemctl start php-fpm

sudo systemctl enable php-fpm

Install and verify swoole

sudo dnf install php-pecl-swoole6

php -i | grep swoole

Valkey

sudo dnf install valkey

sudo systemctl enable valkey

sudo systemctl start valkey

sudo valkey-cli ping

Valkey PHP module

sudo dnf install php-pecl-redis

php -i | grep redis

GIT

sudo dnf install git

Composer

wget https://getcomposer.org/installer -O composer-installer.php

sudo chmod 777 /usr/local/bin

php composer-installer.php --filename=composer --install-dir=/usr/local/bin

Firewall setup

In order to add a minimum level of security, a firewall needs to be installed and allows
connections from outside only to certain ports, from certain IP.

Firewall setup is not mandatory

sudo dnf install firewalld

sudo systemctl enable firewalld

Before starting the firewall, be sure you will not be locked outside

sudo firewall-offline-cmd --zone=public --add-port=22/tcp --permanent

sudo systemctl start firewalld

By default, Swoole runs on port 8556. You can change that in the configuration file.

sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="YOUR_IP_ADDRESS" port port="8556" protocol="tcp" accept'

sudo firewall-cmd --reload

NOW THE SERVER IS READY