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<p class="MsoNormal">Outside the context of slurm, you could add exceptions to /etc/security/access.conf. This depends on where pam_access.so appears in /etc/pam.d/sshd. I believe we’re using the config recommended in the pam_slurm_adopt documentation. There
are a number of caveats: you need system root to configure it, not just slurm admin; it will allow SSH not just SFTP; pam_access.so appears in other PAM configurations, so be careful what else you’re allowing; it’s inconvenient if the set of users or set of
nodes changes with any frequency.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We use this mechanism, and it works for us, because the users we’re allowing to bypass pam_slurm_adopt are HPC staff, not users.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">John<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">slurm-users <slurm-users-bounces@lists.schedmd.com> on behalf of "Ratnasamy, Fritz" <fritz.ratnasamy@chicagobooth.edu><br>
<b>Reply-To: </b>Slurm User Community List <slurm-users@lists.schedmd.com><br>
<b>Date: </b>Tuesday, July 12, 2022 at 12:53 AM<br>
<b>To: </b>Slurm User Community List <slurm-users@lists.schedmd.com><br>
<b>Subject: </b>[slurm-users] Allow SFTP on a specific compute node<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span style="font-size:1.0pt;color:white">Hello, Currently, our cluster does not allow ssh to compute nodes for users unless they have a running job on that compute node. I believe a system admin has
set up a PAM module that does the block. Whn trying ssh, this is the message returned:
<o:p></o:p></span></p>
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<p class="MsoNormal">Hello, <br>
<br>
Currently, our cluster does not allow ssh to compute nodes for users unless they have <o:p></o:p></p>
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<p class="MsoNormal">a running job on that compute node. I believe a system admin has set up a PAM module<o:p></o:p></p>
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<p class="MsoNormal">that does the block. Whn trying ssh, this is the message returned:<br>
Access denied by pam_slurm_adopt: you have no active jobs on this node<br>
Connection closed by 10.135.242.188 port 22<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">However, we would like to allow sftp on a specific compute node for specific users. <br>
Any idea on how to do that? <br>
Thanks, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#9C1D21">Fritz Ratnasamy</span></b><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#9C1D21">Data Scientist</span><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#9C1D21">Information Technology</span><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:Times;color:#676E73">The University of Chicago</span><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:Times;color:#676E73">Booth School of Business</span><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:Times;color:#676E73">5807 S. Woodlawn</span><o:p></o:p></p>
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<span style="font-size:10.5pt;font-family:Times;color:#676E73">Chicago,</span><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333"> </span><span style="font-size:10.5pt;font-family:Times;color:#676E73">Illinois</span><span style="font-size:10.5pt;font-family:"Helvetica Neue";color:#333333"> </span><span style="font-size:10.5pt;font-family:Times;color:#676E73">60637</span><o:p></o:p></p>
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