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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">We have been doing bulk tests of the OpenNebula 4.8 econe-server.
<div>With just a straight econe-run-instances we can get up to 1000 VM's (the limit of our current subnet) </div>
<div>started fairly quickly (about 30 minutes)</div>
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<div>But in practice we are using a more complicated sequence of EC2 calls via HTCondor.</div>
<div>In particular it is doing a CreateKeyPair call before it launches each VM and then </div>
<div>calling the RunInstances method with the --keypair option, a unique keypair for each VM.</div>
<div>After the VM exits, it called a DeleteKeyPair call.</div>
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<div>IT appears there is a hard limit of the number of key pairs that can be stored in </div>
<div>any one user's template and that hard limit is 301. Any further CreateKeyPair calls</div>
<div>return with "connection reset by peer" causing HTCondor to mark the VM as held.</div>
<div>Fortunately it is possible to override this and tell HTCondor to continue, but it's a pain.</div>
<div>We do have ways to log into the vm's without the ssh key pair so we wouldn't even really need to register</div>
<div>them at all.</div>
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<div>Is my analysis correct? Is there a hard limit of the number of keys that can be stored in the user template?</div>
<div>If so, how best to get around this limit?</div>
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<div>Steve Timm</div>
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