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=About=
n8n can be used to make AI workflows and execute them.


=Installation=
==On Rocky 9.x==
Install nodejs via below as root user:
<pre>
curl -fsSL https://rpm.nodesource.com/setup_22.x -o nodesource_setup.sh
sudo -E bash nodesource_setup.sh
sudo dnf install -y nodejs
node -v
npm -v
</pre>

To install N8n on local system we can use npn and install via root user using:
<pre>
sudo npm install n8n -g
</pre>

==On Ubuntu 24.04==
Install nodejs and npm as root.  Then install n8n also as root
<pre>
curl -fsSL https://deb.nodesource.com/setup_22.x -o nodesource_setup.sh
sudo -E bash nodesource_setup.sh
sudo apt install -y nodejs
node -v
npm -v

sudo npm install n8n -g
</pre>




=Executing=
Then we can start n8n service as root user via:
<pre>
n8n start
</pre>

Then open http://locahost:5678/ and create account to work with n8n workflows.


=Sample Usage=

# Create a new workflow
# Add first step "Basic LLM chain".  Use "<-" from top left to go back to canvas
# Select model and select desired ollama model.  If required add a credential with base URL "http://localhost:11434" to connect to local ollama
# Add "Convert to file" with "Convert to html" node
# Add "Read/Write files to disk" with "Write file to disk" 
# Give file path.  Since we started n8n as root we can write almost anywhere but file will get created with root privileges.  Eg /home/user/Desktop/output.html
# Save and execute workflow to see query output saved on Desktop in html file




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