Azure Generate Content Key With Content Key Id

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With a secure shell (SSH) key pair, you can create virtual machines (VMs) in Azure that use SSH keys for authentication, eliminating the need for passwords to sign in. This article shows you how to quickly generate and use an SSH public-private key file pair for Linux VMs. You can complete these steps with the Azure Cloud Shell, a macOS or Linux host, the Windows Subsystem for Linux, and other tools that support OpenSSH.

Note

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VMs created using SSH keys are by default configured with passwords disabled, which greatly increases the difficulty of brute-force guessing attacks.

For more background and examples, see Detailed steps to create SSH key pairs.

For additional ways to generate and use SSH keys on a Windows computer, see How to use SSH keys with Windows on Azure.

Supported SSH key formats

Azure currently supports SSH protocol 2 (SSH-2) RSA public-private key pairs with a minimum length of 2048 bits. Other key formats such as ED25519 and ECDSA are not supported.

Create an SSH key pair

Use the ssh-keygen command to generate SSH public and private key files. By default, these files are created in the ~/.ssh directory. You can specify a different location, and an optional password (passphrase) to access the private key file. If an SSH key pair with the same name exists in the given location, those files are overwritten.

The following command creates an SSH key pair using RSA encryption and a bit length of 4096:

If you use the Azure CLI to create your VM with the az vm create command, you can optionally generate SSH public and private key files using the --generate-ssh-keys option. The key files are stored in the ~/.ssh directory unless specified otherwise with the --ssh-dest-key-path option. The --generate-ssh-keys option will not overwrite existing key files, instead returning an error. In the following command, replace VMname and RGname with your own values:

Provide an SSH public key when deploying a VM

To create a Linux VM that uses SSH keys for authentication, specify your SSH public key when creating the VM using the Azure portal, Azure CLI, Azure Resource Manager templates, or other methods:

If you're not familiar with the format of an SSH public key, you can display your public key with the following cat command, replacing ~/.ssh/id_rsa.pub with the path and filename of your own public key file if needed:

A typical public key value looks like this example:

If you copy and paste the contents of the public key file to use in the Azure portal or a Resource Manager template, make sure you don't copy any trailing whitespace. To copy a public key in macOS, you can pipe the public key file to pbcopy. Similarly in Linux, you can pipe the public key file to programs such as xclip.

The public key that you place on your Linux VM in Azure is by default stored in ~/.ssh/id_rsa.pub, unless you specified a different location when you created the key pair. To use the Azure CLI 2.0 to create your VM with an existing public key, specify the value and optionally the location of this public key using the az vm create command with the --ssh-key-values option. In the following command, replace VMname, RGname, and keyFile with your own values:

If you want to use multiple SSH keys with your VM, you can enter them in a space-separated list, like this --ssh-key-values sshkey-desktop.pub sshkey-laptop.pub.

SSH into your VM

With the public key deployed on your Azure VM, and the private key on your local system, SSH into your VM using the IP address or DNS name of your VM. In the following command, replace azureuser and myvm.westus.cloudapp.azure.com with the administrator user name and the fully qualified domain name (or IP address):

If you specified a passphrase when you created your key pair, enter that passphrase when prompted during the login process. The VM is added to your ~/.ssh/known_hosts file, and you won't be asked to connect again until either the public key on your Azure VM changes or the server name is removed from ~/.ssh/known_hosts.

If the VM is using the just-in-time access policy, you need to request access before you can connect to the VM. For more information about the just-in-time policy, see Manage virtual machine access using the just in time policy.

Next steps

• For more information on working with SSH key pairs, see Detailed steps to create and manage SSH key pairs.

• If you have difficulties with SSH connections to Azure VMs, see Troubleshoot SSH connections to an Azure Linux VM.

SSH KEYS allow us to connect to VMs without using passwords but by passing a private key that can be managed by you or your organization.

There are three parts to this tutorial:
A. Generate an SSH Key
B. Create a VM in Azure that uses the public key
C. Connect to VM using SSH keys

Prerequisites:
Bash
ssh-keygen ($ info ssh-keygen to learn more)
An Azure Subscription

A. Generate an SSH Key

Open bash and enter:
$ ssh-keygen -t rsa -b 2048 -C 'Ubuntu@azure-server'
Keyname: server-key
Passphrase: somethingMemorable

Copy the contents of server-key.pub
$ cat server-key.pub

Should look like this:
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDMlUr7PCEdBmCVZHG5RqI8i7GgYAzd2G/FZ987XXa63vnqxZmZogVmmXrTnBHeM6oDv7v7g495CiiiINhJbGR4o7t4agiHOM43egDv7BbiViTlfVr3y5AxLUvRwHnC3egl8ABVX1anfXXR73x7IS3YRNWkh6gXtlhImw8UKG04UoZEmWB9BLt53lk/9c3Hxz22YZarzImrpQYy1XEUZ096B9mK/Fe+/McH78ZHUpXEgOZBIDP5KdqPk5XKznpwUDJ4/SPXPEWWCCjQ8gOoTFcFMaiMnXp5o5Udsi/DFO1TS/t8BeCRymkr5tdPvzexjkjkjkjkjkjkjkjkjkjkjkjt Ubuntu@azure-server

Here’s what it looks like for me:

Cool and you’ll also notice that there’s another file in that same directory – server-key
$ ls | grep server
Here’s what that looks like for me:

Now that we have our public and private keys let’s get our VM setup.

B. Create a VM in Azure that uses the public key

1. Go to the Azure Portal

2. Select New -> Search: Ubuntu Server
(I’m using 14.04 this time)

Folder lock 7 serial key generator download. 3. Make sure you’ve selected Resource Manger and click Create:

4. Now configure the basics per our ssh-keygen parameters
Name: azure-server
VM Disk Type: Up To You
User name: Ubuntu
Authentication type: SSH public key
SSH public key: Paste the results of $ cat server-key.pub
Subscription: Depends how you want to pay for the server
Resource Group: Up to you – I’m going to create a new one so I can quickly delete it.
Location: Up to you

Should look like this:

Then select OK to go to the next section.

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5. Choose Virtual Machine Size
I’m going with the smallest VM for testing.
You can also view all different VM sizes to find the right one for your use case.

6. Configure optional Features
Setting the Storage account name to something you’ll remember easily is good.
And if you want to configure ports now you can select Network Security group to allow ports specific traffic.
Here’s what that looks like:
Click okay to continue to the Summary of your VM.

Here’s our summary:

Select okay to start your VM.

7. Wait for it to be ready.
Dashboard will have an icon and you’ll get a notification when its ready:

8. Once ready select on it to see the overview and the IP address.
Should look like this:

Great! We have a VM and its IP address. Lets use our Private SSH key to connect.

C. Connect to VM using SSH Keys

1. Open bash to file location you created the keys in.
Make sure they’re there:
$ ls | grep server

2. Enter this command to use SSH to connect:
$ ssh -i server-key Ubuntu@52.183.31.11 -v
or more generally
$ ssh -i keyname username@ip.address -v
Make sure you’re using server-key and not server-key.pub
Tip: -v is the verbose option. Not necessary, but it helps to see if the key is being accepted

3. Great, now accept the certificate, and enter your memeroablePassphrase
Whole thing should look like this:

Azure Generate Content Key With Content Key Id Password

And you’ll be in the terminal of your VM:

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Yay!
You’ve got the key, you’ve got the VM, now put it to work!
Flask on Ubuntu
Node on Ubuntu
Mongo on Ubuntu
Connecting to VMs from Azure Web Apps

Azure Generate Content Key With Content Key Ideas

Let me know if you have any questions by posting in the comments below!