Unable to Import Key Pair

asked 2017-06-14 15:38:15 +0300

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I try to follow instruction on "Windows authentication without passwords in OpenStack" but it seems like it is missing instruction for Import Key Pair via OpenStack Horizon.

After I run script create-winrm-client-cert.sh I have got 2 files

winrm_client_cert.pem 
winrm_client_cert.pfx

I need to export Public key from winrm_client_cert.pem by this OpenSSL command

openssl x509 -pubkey -noout -in winrm_client_cert.pem -out pubkey.pem

Then I try to import this public key to my project:

-----BEGIN CERTIFICATE-----
MIIDIjCCAgqgAwIBAgIJAPb3vERlPtSwMA0GCSqGSI......
............+0rcoyVMWNI50SrXPWpX6uaIuyWsN1Vc
-----END PUBLIC KEY-----

but I encountered with “Unable to import key pair” when trying to import the Key Pair via the OpenStack Horizon same as this link https://schwulet.wordpress.com/2016/0...

Please can you let me know what did I missing?

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answered 2017-06-14 17:20:20 +0300

Claudiu Belu
319 ●4 ●5

Hello,

The article you mentioned is passing the x509 certificate to the instance through instance user_data, not as a keypair:

nova boot --flavor 2 --image your_windows_image --key-name key1 vm1 --user_data=your_cert.pem

That being said, since then, support for x509 has been added to nova-api (but not horizon). See the help for the nova keypair-add command:

usage: nova keypair-add [--pub-key <pub-key>] [--key-type <key-type>]
                        [--user <user-id>]
                        <name>

Create a new key pair for use with servers.

Positional arguments:
  <name>                 Name of key.

Optional arguments:
  --pub-key <pub-key>    Path to a public ssh key.
  --key-type <key-type>  Keypair type. Can be ssh or x509. (Supported by API
                         versions '2.2' - '2.latest')
  --user <user-id>       ID of user to whom to add key-pair (Admin only).
                         (Supported by API versions '2.10' - '2.latest')

This has been introduced in nova-api v2.1 (microversion 2.2), so make sure you have that registered as an endpoint:

openstack endpoint list
# you should see something like this:
# | 34291deac24a4a9195c340b70f03830f | RegionOne | nova         | compute        | True    | admin     | http://10.14.0.149:8774/v2.1              |

If not, you'll have to register a new endpoint for the /v2.1 URL, and then run a command like this:

nova --service-type endpoint_name keypair-add ...

By default, the microversion 2.latest is used, but if not, you will probably want to be explicit:

nova --service-type endpoint_name --os-compute-api-version 2.2 keypair-add ...

Best regards,

Claudiu Belu

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answered 2017-06-14 20:39:43 +0300

This post is a wiki. Anyone with karma >75 is welcome to improve it.

What about the existing Keypair I created via OpenStack Horizon and downloaded .pem with Private kay, Is there any solution to export Private Key from .pem and import into my local Windows computer certificates?

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Hello, after all I know, there is no such transformation possible between the keys, and if it exists, it is not implemented in OpenStack or cloudbase-init. I suggest to you using either userdata scripts, either the x509 key type feature in Nova. Thank you, Adrian Vladu.

avladu ( 2017-06-15 15:51:38 +0300 )edit

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answered 2017-06-14 23:24:55 +0300

avladu

613 ●1 ●3 ●5

Hello,

You can install OpenSSH server on the Windows image from https://www.mls-software.com/opensshd... or from https://github.com/PowerShell/Win32-O.... Then, you can use any ssh client to connect with your private key associated to the ssh public key from Nova to your Windows machine and issue batch/PowerShell commands.

Thank you,
Adrian Vladu

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