<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>There is a scheduler hint called 'force_hosts' for this sort of thing. I believe the command line looks like this:</div><div><br></div><div>Nova boot <server_name> --hints force_hosts=host1 <everything else></div><div><br></div><div>Does that work for you?</div><div><br></div><div>This does not bypass the scheduler, but it is built into the scheduler to allow you to explicitly place new instances on a subset of hardware.</div><div><br></div><div>-Mike Wilson</div><div><br></div><div>Sent from my iPhone</div><div><br>On Oct 16, 2013, at 6:35 PM, Li Ma <<a href="mailto:skywalker.nick@gmail.com">skywalker.nick@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Hi all,<div><br></div><div>I encountered a problem with nova-scheduler. Given that I have 20 different compute nodes, I need to run several instances on a certain compute node for testing or verification. I go through all the scheduling algorithms and find out I can achieve this by availability zone.</div>
<div><br></div><div>But this is a little bit weird to create more than 20 availability zone with only one compute node temporarily. Is there any other solutions for this?</div><div><br></div><div>In my opinion, there should be a certain parameter with nova CLI to specify which compute node this instance should be placed directly without any scheduling. Using this method, I can bypass the scheduling options defined in the nova.conf and do what we want to meet the specific requirements. <br clear="all">
<div><br></div><div>Thanks,</div>-- <br><div dir="ltr">
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<p style="text-align:left" align="left"><span style="color:silver;font-size:10pt" lang="EN-US"><font color="#000000">Li Ma (Nick)</font></span></p></div>
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<p style="text-align:left" align="left"><span style="color:silver;font-size:10pt" lang="EN-US"><font color="#000000">Email: <a href="mailto:skywalker.nick@gmail.com" target="_blank">skywalker.nick@gmail.com</a></font></span></p>
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