Differences

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--- ssh_login_nopass [2026/04/29 21:56] – pwolinsk
+++ ssh_login_nopass [2026/05/10 21:44] (current) – pwolinsk
@@ Line 1: / Line 1: @@
-====== SSH Password-less Login ======
+==== SSH Password-less Login ====
-The secure shell (SSH) server on **hpc-portal1.hpc.uark.edu** does not accept
+The secure shell (SSH) server on **hpc-portal2.hpc.uark.edu** does not accept passwords as an authentication method. Instead, SSH key files are used for access. A public SSH key file is stored in your account on Pinnacle. A matching private key (pinnacle.key) file has to be supplied as a parameter to the ssh command on the client to log in.
-passwords as an authentication method. Instead, SSH key files are used for
-access. A public SSH key file is stored in your account on Pinnacle. You must
-supply a matching private key (pinnacle.key) file as a parameter to the ssh
-command on the client to log in.
 <code>
-ssh -i pinnacle.key ffinfinn@hpc-portal1.hpc.uark.edu
+ssh -i pinnacle.key ffinfinn@hpc-portal2.hpc.uark.edu
 </code>
-Both private and public keys are generated and configured automatically on
+Both private and public keys are generated and configured automatically on Pinnacle via the web portal. To enable SSH password-less access:
-Pinnacle via the web portal. To enable SSH password-less access:
-  - Log into the web portal at: https://hpc-portal1.hpc.uark.edu
+**1.** Log into the web portal at: https://hpc-portal2.hpc.uark.edu
-  - In the top menu go to **Clusters -> SSH keys**
+**2.** In the top menu go to **Clusters -> SSH keys**
 {{:hpc-portal1-auth5.png?400|SSH keys menu}}
-  - Click on **Create New SSH Key** or **Use Existing SSH Key** if available.
+**3.** Click on **Create New SSH Key** or **Use Existing SSH Key** if available.
-    Both buttons will redirect your browser to a file manager window allowing
+Both buttons will redirect your browser to a file manager window allowing you
-    you to download your private SSH key **pinnacle.key** file to your client device.
+to download your private SSH key **pinnacle.key** file to your client device.
 {{:hpc-portal1-auth6.png?400|SSH key download}}
-  - Click on the checkbox next to the **pinnacle.key** file and press the
+**4.** Click on the checkbox next to the **pinnacle.key** file and press the
-    **Download** button at the top. The file will likely be saved to your **Downloads** directory.
+**Download** button at the top. The file will likely be saved to your **Downloads** directory.
-  - Before the file can be used for SSH, the file permissions must be updated
-    to read-only for owner (mode ''400'') on macOS and Linux:
+**5.** Before you can use the file for SSH, the file permissions must be updated
+to read-only for owner, mode ''400'' on MacOS and Linux:
 <code>
@@ Line 35: / Line 32: @@
 </code>
-  - Use the new key to SSH into Pinnacle:
+**6.** Use the new key to SSH into Pinnacle:
 <code>
-ssh -i pinnacle.key ffinfinn@hpc-portal1.hpc.uark.edu
+ssh -i pinnacle.key ffinfinn@hpc-portal2.hpc.uark.edu
-  ************ PLEASE CITE US in your publications *****************************
+  ************ PLEASE CITE AHPCC ********** in your publications ***************
+  ******************************************************************************
   **    This research is supported by the Arkansas High Performance Computing **
   **    Center which is funded through multiple National Science Foundation   **
   **    grants and the Arkansas Economic Development Commission.              **
   ******************************************************************************
+  Login nodes are for file operations and job submission.
-  Login nodes are for file operations and job submission.
+    - Don't run R or Python on login nodes.
-  All login nodes run a different kernel than compute nodes, so:
+  To start an interactive job on a shared cloud compute node:
-    - Don't compile on login nodes. Resulting code won't work on compute nodes.
+     srun -N1 -n1 -c1 -p cloud72 -q cloud -t 72:00:00 --pty /bin/bash
-    - Don't run R or Python on login nodes.
-  For a shared cloud compute node:
-     srun -N1 -n1 -c1 -p cloud72 -q cloud -t 72:00:00 --pty /bin/bash
 Last login: Fri Apr 10 10:14:51 2026 from 167.224.131.232
@@ Line 63: / Line 58: @@
 pinnacle-l11:ffinfinn:$
 </code>