Accessing the login node (ssh)¶
On this Page
- How to Access the login node for 'lightweight' tasks
- How to SSH through a terminal
- How to SSH with OnDemand
Use of the login node should be limited to 'lightweight' tasks such as file browsing/copying/moving or submitting jobs into the SLURM scheduler.
You can access the Research Cluster login node remotely through the two below mechanisms.
SSH through a terminal¶
To SSH to the login node from your local computer, first open a terminal/commandline and then use the ssh command with username being your Otago username and the address for the remote computer being aoraki-login.otago.ac.nz which will look like this: ssh lasfi12p@aoraki-login.otago.ac.nz
Terminal
ssh <otago-username>@aoraki-login.otago.ac.nz
<otago-username>@aoraki-login.otago.ac.nz's password:
ssh <otago-username>@aoraki-login-stu.uod.otago.ac.nz
<otago-username>@aoraki-login-stu.uod.otago.ac.nz's password:
Info
If you are using Student Wi-Fi or VPN, you will need to use the alternate address aoraki-login-stu: ssh <otago-username>@aoraki-login-stu.uod.otago.ac.nz
First time connecting
The first time you ssh from a computer you will likely see output extremely similar to:
Terminal
The authenticity of host 'aoraki-login.otago.ac.nz (X.X.X.X)' can't be established.
ED25519 key fingerprint is SHA256:WXAGQmlR5C7rvCOiSSL8PtiuxytA368rjozXXO0NckE.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])?
Warning
Double check the fingerprint matches one of the following:
(RSA) SHA256:pzUx1abRS35sbM9n/3OqMpGiF9zegvlG4jQrr78cGFg
(ECDSA) SHA256:g/BKtsqcMchX7l7YRqDJ98azAumTxzQT0hCCCgVIKxc
(ED25519) SHA256:WXAGQmlR5C7rvCOiSSL8PtiuxytA368rjozXXO0NckE
Type 'yes' and Enter, where you will then be prompted for your password (or need to re-ssh) depending on your ssh client.
Password not showing
When typing in your password when prompted there will be nothing outputed on the screen. Once you have typed your password press Enter to submit and continue. If you mistyped your password you will be prompted to re-enter it.
SSH within OnDemand¶
To use the cluster shell access within OnDemand, first connect to the Otago OnDemand web portal and then from the top menu bar select the menu Clusters > Aoraki Cluster Shell Access.
You will then be prompted to input your password, similar to SSH through the terminal
