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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Interesting idea, that seams reasonable.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The password is encrypted when it leaves the VM in the XenServer case too (if I have understood the code correctly).<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>My only concerns are thinking about the more general solution:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo6'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>It only works on boot, so harder to change password if you forgot it.<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo6'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>I guess it leaves people who are depended on Config drive stuck<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo6'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>We are making more changes to an API we don’t really own<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo6'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>How does the VM know to trust it is not an “evil” metadata service, but I guess the same applies to injecting the SSH keys<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>John<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ZH-CN'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ZH-CN'> Day, Phil [mailto:philip.day@hp.com] <br><b>Sent:</b> 03 July 2012 6:06<br><b>To:</b> John Garbutt; openstack@lists.launchpad.net (openstack@lists.launchpad.net) (openstack@lists.launchpad.net)<br><b>Subject:</b> RE: Setting VM passwords when not running on Xen<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Thanks John,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>One approach we were wondering about is to have an agent in Windows which:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l2 level2 lfo2'><![if !supportLists]><span style='font-family:"Courier New";color:#1F497D'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Generates a random password and sets it for the admin account<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l2 level2 lfo2'><![if !supportLists]><span style='font-family:"Courier New";color:#1F497D'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Gets the public ssh key from the metadata service<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l2 level2 lfo2'><![if !supportLists]><span style='font-family:"Courier New";color:#1F497D'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Encrypts the password with the public key<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:72.0pt;text-indent:-18.0pt;mso-list:l2 level2 lfo2'><![if !supportLists]><span style='font-family:"Courier New";color:#1F497D'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Pushes the encrypted public key back to the metadata server (requires the metadata server to support Push) <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The user can then get the encrypted password from the API and decrypt it with their private key<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The advantage would be that the clear text password never leaves the VM, so there are fewer security concerns about Nova having access to clear text passwords.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>It would also seem to be a small change in the metadata service and no change in the API layer – not sure if there are concerns about what a VM could break if it updates its own metadata, but I guess we could also limit what values can be set.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thoughts ?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Phil<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-GB'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-GB'> John Garbutt [mailto:John.Garbutt@citrix.com] <br><b>Sent:</b> 03 July 2012 16:41<br><b>To:</b> Day, Phil; openstack@lists.launchpad.net (openstack@lists.launchpad.net) (openstack@lists.launchpad.net)<br><b>Subject:</b> RE: Setting VM passwords when not running on Xen<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>This seemed to crop up quite a lot in different sessions at the Design summit. I am certainly interested in a standard way to inject information into VMs.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>What I think we need is a cross hypervisor two-way guest communication channel that is fairly transparent to the user of that VM (i.e. ideally not a network connection).<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>If I understand things correctly, we currently have these setup ideas:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Config Drive (not supported by XenAPI, but not a two way transport)<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Cloud-Init / Metadata service (depends on DHCP(?), and not a two-way transport)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>But to set the password, we ideally want two way communication. We currently have these:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>XenAPI guest plugin (XenServer specific, uses XenStore, but two way, no networking assumed )<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l3 level1 lfo4'><![if !supportLists]><span style='font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='color:#1F497D'>Serial port (used by <a href="http://wiki.libvirt.org/page/Qemu_guest_agent">http://wiki.libvirt.org/page/Qemu_guest_agent</a> but not supported on XenServer)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I like the idea of building a common interface (maybe write out to a known file system location) for the above two hypervisor specific mechanisms. The agent should be able to pick which mechanism works. Then on top of that, we could write a common agent that can be shared for all the different hypervisors. You could also fallback to the metadata service and config drive when no two way communication is available.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I would love this Guest Agent to be an OpenStack project that can then be up streamed into many Linux distribution cloud images.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Sadly, I don’t have any time to work on this right now, but hopefully that will change in the near future.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>John<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ZH-CN'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:ZH-CN'> <a href="mailto:openstack-bounces+john.garbutt=eu.citrix.com@lists.launchpad.net">openstack-bounces+john.garbutt=eu.citrix.com@lists.launchpad.net</a> <a href="mailto:[mailto:openstack-bounces+john.garbutt=eu.citrix.com@lists.launchpad.net]">[mailto:openstack-bounces+john.garbutt=eu.citrix.com@lists.launchpad.net]</a> <b>On Behalf Of </b>Day, Phil<br><b>Sent:</b> 03 July 2012 3:07<br><b>To:</b> <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a> (<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>) (<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>)<br><b>Subject:</b> [Openstack] Setting VM passwords when not running on Xen<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Folks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is anyone else looking at how to support images that need a password rather than an ssh key (windows) on hypervisors that don’t support set_admin_password (e.g. libvirt) ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal>Phil <o:p></o:p></p></div></div></div></body></html>