Linux

Details: Written by: Stanko Milosev; Category: Ubuntu; Published: 17 July 2026; Last Updated: 18 July 2026; Hits: 17

If on:

ssh username@ip-addres

I receive error like:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ED25519 key sent by the remote host is

Then do

ssh-keygen -R ip-addres

Details: Written by: Stanko Milosev; Category: Ubuntu; Published: 12 July 2026; Last Updated: 12 July 2026; Hits: 61

Hier I already gave one example how to install Nginx, now here is example how to install ASP.NET Core 10 Application on Ubuntu 24.04 with Nginx.

This guide explains how to deploy an ASP.NET Core 10 application from a Windows 11 development machine to an Ubuntu 24.04 server running inside VMware. It covers installing the .NET runtime, publishing the application, copying it to Ubuntu, testing it manually, and configuring it as a systemd service.

Install the .NET 10 Runtime

Download and install Microsoft's package repository.

wget https://packages.microsoft.com/config/ubuntu/24.04/packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
sudo apt update
sudo apt install -y aspnetcore-runtime-10.0

Verify the Installation

dotnet --info

You should see output similar to:

.NET SDK:
 Version:           10.0.xxx

Host:
  Version:          10.0.xxx
  Architecture:     x64
  RID:              linux-x64

.NET runtimes installed:
  Microsoft.AspNetCore.App 10.0.xxx
  Microsoft.NETCore.App    10.0.xxx

Publish the Application on Windows 11

On your Windows development machine, open a command prompt in the folder containing your solution (.sln) file.

Publish the application directly to your VMware shared folder.

dotnet publish -c Release -o "\\vmware-host\Shared Folders\ubuntuVmShare\asp"

After publishing completes, the output folder will contain everything needed to run the application.

Copy the Published Application to Ubuntu

Assuming your VMware shared folder is named ubuntuVmShare, copy the published files to the web directory.

sudo cp -a /mnt/hgfs/ubuntuVmShare/asp/. /var/www/html/net/

Change to the application directory.

cd /var/www/html/net/

Locate the Application DLL

Search for the runtime configuration file.

find . -name "*.runtimeconfig.json"

Example output:

./Kanaloa.runtimeconfig.json

The filename tells you which DLL to start. In this example, the application is started with:

dotnet Kanaloa.dll

Run the Application Manually

If everything is configured correctly, you should see output similar to:

warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35]
      No XML encryptor configured. Key {de507390-fb82-4965-a58a-0e17b6285227} may be persisted to storage in unencrypted form.

info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5000

info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.

info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production

info: Microsoft.Hosting.Lifetime[0]
      Content root path: /var/www/html/net

The Data Protection warning is normal for many server installations and does not prevent the application from running.

Press Ctrl+C to stop the application before continuing.

Create a systemd Service

Create a new service definition.

sudo nano /etc/systemd/system/kanaloa.service

Insert the following configuration:

[Unit]
Description=Kanaloa ASP.NET Core API
After=network.target

[Service]
Type=simple
WorkingDirectory=/var/www/html/net
ExecStart=/usr/bin/dotnet /var/www/html/net/Kanaloa.dll

Restart=always
RestartSec=5

User=www-data
Group=www-data

Environment=ASPNETCORE_ENVIRONMENT=Production
Environment=ASPNETCORE_URLS=http://127.0.0.1:5000

[Install]
WantedBy=multi-user.target

Save the file (Ctrl+S) and exit Nano (Ctrl+X).

Reload systemd

Reload the service definitions.

sudo systemctl daemon-reload

Enable the Service

Configure the service to start automatically during boot.

sudo systemctl enable kanaloa

Expected output:

Created symlink:
/etc/systemd/system/multi-user.target.wants/kanaloa.service
→ /etc/systemd/system/kanaloa.service

Start the Service

sudo systemctl start kanaloa

Verify the Service Status

sudo systemctl status kanaloa

You should see something similar to:

● kanaloa.service - Kanaloa ASP.NET Core API
     Loaded: loaded (/etc/systemd/system/kanaloa.service; enabled)

     Active: active (running)

     Main PID: 12345 (dotnet)

      Tasks: ...
      Memory: ...
      CPU: ...

The important line is:

Active: active (running)

Summary

Your ASP.NET Core application is now:

Running on Ubuntu 24.04.
Listening on http://127.0.0.1:5000.
Managed automatically by systemd.
Configured to start automatically whenever the server boots.

Details: Written by: Stanko Milosev; Category: Ubuntu; Published: 12 July 2026; Last Updated: 17 July 2026; Hits: 47

This guide explains how to prepare a clean Ubuntu installation for Joomla! by installing Nginx, MariaDB, and PHP 8.5. It also includes VMware shared folder access, database import, PHP configuration, and the initial Joomla! directory setup.

Access VMware Shared Folders (Windows 11 Host)

If you are testing Ubuntu in VMware Workstation and your host operating system is Windows 11, mount the shared folders first.

sudo mkdir -p /mnt/hgfs
sudo vmhgfs-fuse .host:/ /mnt/hgfs -o allow_other

Update Ubuntu

Always start by updating the operating system.

sudo apt update
sudo apt upgrade -y
sudo reboot

Install Nginx

Install the Nginx web server.

sudo apt install nginx -y

Reboot the server after installation.

sudo reboot

Verify that Nginx is Running

sudo systemctl status nginx

You should see output similar to:

● nginx.service - A high performance web server and reverse proxy server
     Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled)
     Active: active (running)

Check the Default Document Root

sudo nginx -T | grep root

Expected output:

root /var/www/html;

Install MariaDB

Update the package list once more.

sudo apt update
sudo apt upgrade -y
sudo reboot

Install MariaDB server and client.

sudo apt install mariadb-server mariadb-client -y

Reboot after installation.

sudo reboot

Verify Installation

mariadb --version
sudo systemctl status mariadb

You should see something similar to:

mariadb  Ver 15.1 Distrib 11.x.x

● mariadb.service - MariaDB Database Server
     Active: active (running)

Secure MariaDB Installation

Run the MariaDB security script.

sudo mariadb-secure-installation

Question	Recommended Answer
Enter current password for root (enter for none)	Enter current password
Switch to unix_socket authentication?	Y
Change the root password?	N
Remove anonymous users?	Y
Disallow root login remotely?	Y
Remove test database?	Y
Reload privilege tables now?	Y

Create the Joomla! Database

Open the MariaDB console.

sudo mariadb

Create a new database.

CREATE DATABASE joomla
CHARACTER SET utf8mb4
COLLATE utf8mb4_unicode_ci;

Import an Existing Joomla! Database

If you already have a Joomla! database backup, import it using:

sudo mariadb joomla < joomla.sql

Import an Existing Joomla! Database with create database

mariadb -u root -p < mydatabase.sql

Install PHP 8.5

Install the required repository packages.

sudo apt install -y software-properties-common ca-certificates curl

sudo add-apt-repository ppa:ondrej/php -y
sudo apt update

Install PHP 8.5 together with the extensions commonly required by Joomla!.

sudo apt install -y \
    php8.5 \
    php8.5-cli \
    php8.5-fpm \
    php8.5-common \
    php8.5-mysql \
    php8.5-curl \
    php8.5-gd \
    php8.5-mbstring \
    php8.5-xml \
    php8.5-zip \
    php8.5-intl \
    php8.5-bcmath

Reboot the server.

sudo reboot

Verify PHP Installation

php -v
sudo systemctl status php8.5-fpm

Expected output:

PHP 8.5.x

● php8.5-fpm.service
     Active: active (running)

Configure Nginx to Process PHP Files

Open the default Nginx site configuration.

sudo nano /etc/nginx/sites-available/default

Locate the following commented block:

# Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;

and add index.php to the list. The following:

location / {
	# First attempt to serve request as file, then
	# as directory, then fall back to displaying a 404.
	try_files $uri $uri/ =404;
}

change to:

location / {
	# First attempt to serve request as file, then
	# as directory, then fall back to displaying a 404.
	try_files $uri $uri/ /index.php?$args;
}

Following:

# pass PHP scripts to FastCGI server
#
#location ~ \.php$ {
#       include snippets/fastcgi-php.conf;
#
#       # With php-fpm (or other unix sockets):
#       fastcgi_pass unix:/run/php/php7.4-fpm.sock;
#       # With php-cgi (or other tcp sockets):
#       fastcgi_pass 127.0.0.1:9000;
#}

Replace it with:

# pass PHP scripts to FastCGI server
#
location ~ \.php$ {
    include snippets/fastcgi-php.conf;

    # With php-fpm
    fastcgi_pass unix:/run/php/php8.5-fpm.sock;
}

Since opening articles didnt work, I was receiving 404, at the end my configuration looks like:

location / {
    try_files $uri $uri/ =404;
}

location /joomla/ {
    try_files $uri $uri/ /joomla/index.php?$query_string;
}

location ~ \.php(?:/|$) {
    include snippets/fastcgi-php.conf;

    fastcgi_split_path_info ^(.+?\.php)(/.*)$;
    fastcgi_param PATH_INFO $fastcgi_path_info;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

    fastcgi_pass unix:/run/php/php8.5-fpm.sock;
}

Save the file (Ctrl+S) and exit Nano (Ctrl+X).

Verify the Nginx Configuration

sudo nginx -t

Expected output:

nginx: configuration file /etc/nginx/nginx.conf test is successful

Restart Nginx

sudo systemctl restart nginx

Create a PHP Test Page

Create a simple phpinfo() page.

sudo nano /var/www/html/info.php

Add the following content:

<?php
phpinfo();

Save the file (Ctrl+S) and exit Nano (Ctrl+X).

Open your browser and navigate to:

http://127.0.0.1/info.php

If PHP is configured correctly, the PHP information page will be displayed.

Prepare the Joomla! Directory

After copying your existing Joomla! files, create the destination folder if necessary and assign ownership to your current user.

sudo mkdir -p /var/www/html/joomla
sudo chown $USER:$USER /var/www/html/joomla

You can now copy your Joomla! files into /var/www/html/joomla and continue with the Joomla! configuration.

Add user to MariaDb and grant permissions:

sudo mariadb
CREATE USER 'joomla'@'localhost' IDENTIFIED BY 'myPass';
GRANT ALL PRIVILEGES ON joomla.* TO 'joomla'@'localhost';
FLUSH PRIVILEGES;

Test:

mariadb -u joomla -p

If it logs in successfully, run:

USE joomla;
SHOW TABLES;

Update configuration.php

sudo nano /var/www/html/joomla/configuration.php

Change these lines:

public $user = 'joomla';
public $password = 'MyStrongPassword123!';
public $db = 'joomla';

Next Steps

Copy your Joomla! files into /var/www/html/joomla.
Adjust ownership and permissions if necessary.
Update configuration.php with your database settings.
Open your Joomla! website in the browser and verify everything is working correctly.

Change pass add user

WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Installing and Running an ASP.NET Core 10 Application on Ubuntu 24.04 with Nginx

Install the .NET 10 Runtime

Verify the Installation

Publish the Application on Windows 11

Copy the Published Application to Ubuntu

Locate the Application DLL

Run the Application Manually

Create a systemd Service

Reload systemd

Enable the Service

Start the Service

Verify the Service Status

Summary

Installing Nginx, MariaDB, and PHP 8.5 on a Clean Ubuntu Server for Joomla!

Access VMware Shared Folders (Windows 11 Host)

Update Ubuntu

Install Nginx

Verify that Nginx is Running

Check the Default Document Root

Install MariaDB

Verify Installation

Secure MariaDB Installation

Create the Joomla! Database

Import an Existing Joomla! Database

Import an Existing Joomla! Database with create database

Install PHP 8.5

Verify PHP Installation

Configure Nginx to Process PHP Files

Verify the Nginx Configuration

Restart Nginx

Create a PHP Test Page

Prepare the Joomla! Directory

Next Steps

Subcategories

Arch linux

Linux

Ubuntu