Cayuga Cluster

This is a private cluster, accessible to only users in cayuga_xxxx projects.

Access to the Cayuga cluster is restricted to connections from the Cornell Ithaca or Weill VPNs. If you have any questions or need further assistance, please send an email to: scu@med.cornell.edu

Setting up your Access

In order to login to the cayuga cluster, we presume you have received a "Welcome" e-mail that has pointed you to this website.

The following 14 steps will guide you to gain access to the cayuga cluster via keys. You will NOT use a password to login to this cluster, only your key. This key will be created within the next steps.

STEP 1:

• We suggest you open this link in a separate browser window in order to keep following these instructions as you go through the steps utilizing this page: CAC Credentials for CAC Services

STEP 2:

• Bypassing the section 'CAC Account Password', scroll down to Globus Sub Registration and Click on Log into Globus

STEP 3:

• Select Weill Cornell Medical College OR Cornell University
• For the globus sub registration: if you have a cornell.edu email AND a Weill Cornell cwid WITHOUT a med.cornell.edu email, you would select 'Cornell University' on the drop down.

STEP 4:

• Press Continue

STEP 5:

• Login Based on your previous selection, you will be prompted to login with either your CWID or NetID upon being redirected to either the 'WCM' or 'CU' Web Login page.)

STEP 6: * If you have never setup globus with your account, you will get three prompts/screens:

• Select Continue on the first screen:

• Check the box and Continue on the second screen:

• Select Allow on the third screen:

STEP 7:

• Select the Weill ID or Cornell NetID button (based on previous choice)

STEP 8:

• Click on Generate an ssh key pair This will generate and register an SSH key for accessing the cayuga cluster.

STEP 9:

• Copy your SSH Private Key (click on the copy button) to your computer(s) into a keyfile-private-file (name the file whatever you would like using editor of choice). You will always use this keyfile-private-file to access cayuga-login1.cac.cornell.edu. We suggest you use the 'Copy' button below. (The key must include the "----BEGIN" first line as well as the "----END" last line.)

STEP 10:

• Confirm you have a .ssh directory in your home directory: ls -ld ~/.ssh
• If you do NOT have ~/.ssh : mkdir ~/.ssh
• Your permissions for your .ssh, must be 700 (read-write-execute for owner only)
  • chmod 700 ~/.ssh

STEP 11:

• move your private key into your .ssh directory: mv keyfile-private-file ~/.ssh

STEP 12:

• Your keyfile must have 600 (read-write for owner only) permissions:
• chmod 600 ~/.ssh/keyfile-private-file
• Your login will fail if your permissons are not as stated above.

Connect to the Cayuga Cluster

STEP 13:

• Connect to either the Weill or Cornell Ithaca VPN using one of these reference links: (required)

  Site	OpSys	Reference Link
  Weill	Windows	https://wcmcprd.service-now.com/kb_view.do?sysparm_article=KB0012185
  Weill	Mac	https://wcmcprd.service-now.com/kb_view.do?sysparm_article=KB0012172
  Ithaca	Windows	https://it.cornell.edu/cuvpn/connect-windows-cu-vpn
  Ithaca	Mac	https://it.cornell.edu/cuvpn/connect-mac-cu-vpn

STEP 14: (FINAL STEP gaining access to cayuga cluster)

• login to cayuga-login1:

• ssh -i <keyfile-private-file> <cwid>@cayuga-login1.cac.cornell.edu

• If you are still having difficulties logging in, please send an email to: scu@med.cornell.edu

Technical Documentation for using the cayuga cluster

https://github.com/CornellCAC/Cayuga/wiki