Usage Guidelines AI Computing Centre

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
====== Connecting to the VPN network ======

===== Security is priority =====
After you received the zip file containing several .ovpn files, you should unpack it to a directory that only you have access to and not upload them anywhere. They contain the connection parameters required to gain access to the management network as well and thus need to be protected from outsiders. Treat it like a password.
===== Installing and using OpenVPN =====
[[https://aisc.hpi.de/doc/aisc.zip|Download]] the OpenVPN configuration files.

===== Linux =====
**Install OpenVPN using your package manager.**
sudo apt install openvpn for ubuntu.
    
**Connect via the quick settings**
  - Go to the network settings menu and clicking the + button.
  - Select import from file.
  - Choose the .ovpn file from the .zip from the download link above.
  - Make sure you add your username and password to the configuration.
  - Connect via the quick settings drop down in the info bar.
   
**Connecting via the commandline**
  - sudo apt install openvpn-systemd-resolved.
  - Uncomment the lines from --begin to --end system-resolved in the .ovpn file inside the .zip you downloaded from above.
  - Connect via openvpn /path/to/configuration.ovpn

You can also watch [[https://vimeo.com/544945704/4b19447338|this video]] for a visual tutorial.

===== MacOS =====


Install [[https://tunnelblick.net/|Tunnelblick]], an open-source OpenVPN client software.
  - To use the .ovpn files provided in the .zip, click the new Tunnelblick icon at the info bar in the top right corner and select VPN details.
  - Drag the .ovpn into the window, it should set them up for you.
  - Put your user credentials into the VPN connection editor.
  - Connect by clicking the tray icon.

You can also watch [[https://vimeo.com/544945649/1ca2183bb5|this video]] for a visual guide using the proprietary [[https://www.sparklabs.com/viscosity/|Viscosity OpenVPN client]].

===== Windows =====
  * Install the [[https://openvpn.net/community-downloads/|OpenVPN Community]] release.
  * Start the OpenVPN GUI with Administrator permissions (start menu -> right click on OpenVPN -> run as administrator).
  * Right click the tray icon and select import file.
  * Choose the .ovpn file from the .zip from the download link above.
  * Right click the tray icon again and select Connect.

You can also watch [[https://vimeo.com/544945779/70d1b5f773|this video]] for a visual tutorial.


===== Connecting to the Entry Point =====


Please connect to the Entry Point first. This entry point is meant to create your home directory.

  * You can connect to the hosts using **ssh user@hpc.sci.hpi.de**. Use your HPI AI Service Centre portal username as your user.
  * you will find yourself on our accessnode and be able to run slurm workloads

In the rare case your VPN client is unable to resolve the login node domain name, please use the following IP instead: 10.130.0.6

Congratulations! Now you should be able to access your resources. If not, please have a second look at the steps described before. If it’s not working, feel free to contact us at aisc-helpdesk(at)hpi.de.