When discovering the SAS© Viya™ environment, especially through PDC (Personal Deployment Context) type deployment images, it is common to want to test custom interactions with the CAS server.
A classic use case is to develop a small web application (in HTML/AngularJS for example) to view or manipulate data loaded into memory. However, once your HTML file is created, you still need to know where to place it to make it accessible via a web browser.
The first instinct is often to use SAS© Studio to upload HTML files directly into the usual working directory, for example: /home/sasdemo/test.
Once the file is in place, you naturally try to access it via a URL like:
http://sasserver.demo.sas©.com/home/sasdemo/test/ma-page.html
Result: It doesn't work. The web server usually returns an error or simply can't find the page.
The web server (HTTP Server) that manages the SAS© Viya™ interface is configured to serve files from specific directories. For obvious security reasons, it does not have default access to users' home directories (/home/...).
For your HTML page to be publicly visible via the server's URL, it must reside in the web server's root directory (Document Root). On standard images (Linux with Apache/Nginx), this path is usually:
/var/www/html
Root access required: Writing to /var/www/html requires elevated privileges. You probably won't be able to do it through a simple standard file upload interface. You will need terminal access with root or sudo rights.
File Placement: Move your folder or HTML files to this directory.
Physical path example: /var/www/html/mon-app/index.html
Once the file is placed in the correct system directory, the URL to access it is derived directly from the folder structure, without including /var/www/html.
If you placed your file here:
/var/www/html/test/dashboard.html
Your access URL will be:
https://sasserver.demo.sas©.com/test/dashboard.html
If you are developing a front-end interface to interact with CAS on a demonstration image:
Do not leave your web files in /home/sasdemo.
Move them to /var/www/html (or the directory configured as DocumentRoot).
Access them via your server's root URL.
The codes and examples provided on WeAreCAS.eu are for educational purposes. It is imperative not to blindly copy-paste them into your production environments. The best approach is to understand the logic before applying it. We strongly recommend testing these scripts in a test environment (Sandbox/Dev). WeAreCAS accepts no responsibility for any impact or data loss on your systems.