Difference between revisions of "HowTo:Access"

Revision as of 13:45, 29 April 2016

SSH Access

Note: Access to our systems is likely to change in coming months, as we are extending and re-structuring our resources. Please revisit this page occasionally to stay abreast with any changes.

The standard way to access our resources is though SSH.

For security reasons, we are currently operating only one login node that is accessible from the outside through ssh. The IP address for this (Solaris) login node is

sfnode0.hpcvl.queensu.ca = 130.15.59.64

Make sure X-forwarding is enabled. This is necessary if you want to use any software with a graphics component. You will need your username and your system access password to get in.

Other nodes, particularly the Linux login/workup node swlogin1 need to be accessed from sflogin0 through ssh. This requires to type the password again:

hpcXXXX@sflogin0$ ssh swlogin1
hpcXXXX@swlogin1's password:
hpcXXXX@swlogin1$

For details about using SSH, please check our SSH FAQ.

Secure Grid Portal

Access through the Portal

Note: Currently, portal access to our resources is provided through Secure Global Desktop. This may change in the near future. Please revisit this page to stay informed about any changes.

The systems can be accessed from a Java enabled web browser:

1. Visit https://portal.hpcvl.queensu.ca/ directly or press the Portal Login button on our Web Page.
2. Login using your Username and Password (same as for ssh).
3. You will be brought to the Secure Global Desktop.
4. To use any of the applications appearing on the left-hand side, such xterm (swlogin1), click on it.
5. If the application is used for the first time, you will be prompted to provide username and password again. The portal will remember it next time. If the information changes, it will prompt you again.

Requirements for Portal

It is crucial to have a recent version of Java installed on your system. This includes a "Java Plugin" for the web browser. Check your Java at this Test Page. If you encounter portal issues they are almost invariably related to Java. Please contact us if you cannot get it to work.

Operating Systems

• Microsoft Windows XP, Vista, 7, 8, 10
• Linux Various Distributions
• Mac (Apple) OS-X > 10.5

Browsers

• Microsoft Internet Explorer
• Mozilla Firefox
• Apple Safari
• Google Chrome does not work (discontinuation of NPAPI support).

Troubleshooting

The Portal is Java based. Most problems are due to missing or mis-configured Java plugins for your browser. Please see http://java.com/en/download/manual.jsp for detailed instructions for installing and configuring Java on your desktop machine.

• Recently Google has dropped support for the "NPAPI" plugin protocol. Since this is used by Java (and other formats such as Silverlight) our portal does not work with Chrome (https://support.google.com/chrome/answer/6213033).

• Firefox users, pay particular attention to the 'missing plugins' indication. You will see this message when the Java run-time environment is not installed. Please install Java before and test it before attempting to sign up.

• If you are using Firefox with Adblock you may need to create an exception rule so that the Secure Desktop loads properly. Use this AdBlock rule: @@|https://portal*.hpcvl.queensu.ca which will white-list HPCVL for HTTPS to machines called "portal*"

• SGD Client Not Installed Automatically. Problem: On some systems, the SGD Client fails to download and install automatically. The SGD Client can be installed manually or can be installed automatically using another browser. Solution: For manual install, go to this page and download the SGD client that fits for your system. After installing, shut down the browser completely and retry.

• Missing Compatibility libraries. Problem: On Linux systems (for instance, Ubuntu) the SGD client cannot be installed. Solution: It is sometimes necessary to install additional libraries for compatibility with the SGD client. Go to the Oracle Platform Support page and follow their instructions on how to install these libraries.

• Sometimes the automatic install fails because of Windows Security settings. Cause: Internet Explorer has a Protected Mode that prevents the SGD Client from downloading and installing automatically. Solution: Add the SGD server to the list of Trusted Sites in Internet Explorer's Security Settings.

• No X11 on Mac. Problem: Newer versions of MacOSX (>10.5) do not include X11 support (see this page for details). Solution: For the portal to work, you need to install the XQuartz XWindows System. This is generally a good idea as this is a common system on Unix machines.