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You may have to configure Putty to use the key you created.
I'm not a windows user, so I don't remember exactly the steps required, but I don't think it "by default" tries your keys.
OpenSSH, for example, will look in .ssh/ for id_rsa/id_dsa/id_ecdsa and try all those behind the scenes (you can see this if you use -v)
I think maybe this link might help:
https://community.hpcloud.com/question/201/how-use-putty-connect-my-cloud-ubuntu-image-how-provide-my-private-key-putty <https://community.hpcloud.com/question/201/how-use-putty-connect-my-cloud-ubuntu-image-how-provide-my-private-key-putty>

> On Jul 1, 2015, at 11:11 PM, aishwarya.adyanthaya at accenture.com wrote:
> 
> I’m able to ssh with the key I have created and saved in one of the nodes by:
> 
> # ssh –I key Ubuntu at floating_ip
> 
> But I want to be able to use it from the putty directly. I don’t understand why it works for the cirros instance but not the instance that was launched by Ubuntu instance.
> 
> From: Abel Lopez [mailto:alopgeek at gmail.com]
> Sent: Thursday, July 02, 2015 11:36 AM
> To: Adyanthaya, Aishwarya
> Cc: openstack-operators at lists.openstack.org
> Subject: Re: [Openstack-operators] Snapshots in dashboard.
> 
> Ok, good, make sure you're selecting a public key when you launch it, and ssh as the "ubuntu" user.
> 
> On Wednesday, July 1, 2015, <aishwarya.adyanthaya at accenture.com <mailto:aishwarya.adyanthaya at accenture.com>> wrote:
> This is the image I downloaded on my machine from the Ubuntu cloud images:
> 
> wget -P /tmp/images http://uec-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img <http://uec-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img>
> 
> 
> From: Abel Lopez [mailto:alopgeek at gmail.com <>]
> Sent: Thursday, July 02, 2015 11:17 AM
> To: Adyanthaya, Aishwarya
> Cc: openstack-operators at lists.openstack.org <>
> Subject: Re: [Openstack-operators] Snapshots in dashboard.
> 
> Ah, perhaps your public key isn't being installed. Are you using the official Ubuntu cloud images (or something based off that)? Or are you using a desktop/VMware image?
> Reason I ask is that cloud-init is an integral part of getting things like user-data and ssh keys setup at the initial build, and that might be missing from your image.
> AFAIK, Cirros isn't meant for any real use, not sure if it's dpkg based.
> 
> On Wednesday, July 1, 2015, <aishwarya.adyanthaya at accenture.com <>> wrote:
> 
> Yes, that’s right. I used the glance image-update command and got it to public ‘Yes’.
> 
> The thing here is that, when I launch a cirros image I’m able to access it through the putty session but while using the Ubuntu image it prompts me as ‘Disconnected: No supported authentications available.”
> 
> I don’t mind using cirros but when I try to run apt-get update command, it gives me ‘command not found’.
> 
> From: Abel Lopez [mailto:alopgeek at gmail.com <mailto:alopgeek at gmail.com>]
> Sent: Thursday, July 02, 2015 10:55 AM
> To: Adyanthaya, Aishwarya
> Cc: openstack-operators at lists.openstack.org <mailto:openstack-operators at lists.openstack.org>
> Subject: Re: [Openstack-operators] Snapshots in dashboard.
> 
> You probably could via the glance cli, but do you really want to?
> A public image is bootable by all tenants, which is fine, but an instance snapshot is more intended for like backups or scaling.
> Are you trying to make public images for all your tenants?
> 
> On Wednesday, July 1, 2015, <aishwarya.adyanthaya at accenture.com <mailto:aishwarya.adyanthaya at accenture.com>> wrote:
> Hi,
> 
> I created a snapshot from the instance I configured through the dashboard. When I go the images in the compute tab, I can see my snapshot has being created but the public tab there reads ‘No’. Is there a way byb which I can change it to a ‘Yes’.
> 
> Thank you in advance!
> 
> Aishwarya Adyanthaya
> 
> 
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