Cayuga Cluster

The cayuga cluster is 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 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 Log into Globus authentication using "Weill Cornell Medical College" from the drop down list.

STEP 2:

• Click on Generate SSH key pair in the "Manage your CAC login credtials" area

STEP 3:

• Click on Generate a new SSH key
• Click on Download your SSH private key

STEP 4:

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

STEP 5:

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

STEP 6:

• 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 7:

• 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 8: (FINAL STEP gaining access to cayuga cluster)

• login to cayuga-login1:

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

• The first time you login, you may be prompted to confirm login. Answer 'yes'

• 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