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I'm just starting to play with AWS services, more specific with CloudFormation. I'm following some of the AWS tutorials, and so far so good, but I'm stuck at one thing: once I generate the template as follows:

AWSTemplateFormatVersion: 2010-09-09
Resources:
 Ec2Instance:
  Type: AWS::EC2::Instance
  Properties:
    InstanceType:
      Ref: InstanceTypeParameter1
    ImageId: ami-07d02ee1eeb0c996c
Parameters:
  InstanceTypeParameter1:
    Type: String
    Default: t2.micro
    AllowedValues:
      - t2.micro
      - m1.small
      - m1.large
    Description: Choose the ec2 instance type
  myKeyPair: 
    Description: Amazon EC2 Key Pair
    Type: "AWS::EC2::KeyPair::KeyName"

Once I upload the template, and click on Next, I can choose the Amazon EC2 Key Pair as you can see in the pict:

Inputting the ssh key

And then I go to the EC2 console, I look the instance the CloudFromation just created, but I can't log-in using SSH protocol. As you can see in the image

I would like to log in in my EC2 instances created by CloudFormation, I thought that using the myKeyPair parameter:

  myKeyPair: 
    Description: Amazon EC2 Key Pair
    Type: "AWS::EC2::KeyPair::KeyName"

Would do the magic, but it doesn't. So: how can I?

k.Cyborg
  • 121

1 Answers1

1

Well, I find what did the trick:

As in the previously showed .yaml, in the Parameters section you need to ask for the user to select a key to use, with:

Parameters:
.........
  myKeyPair: 
    Description: Amazon EC2 Key Pair
    Type: "AWS::EC2::KeyPair::KeyName"

What in fact led me to, when creating the Stack, the webpage prompt asking me for select one of the saved keys: Select one of the saved keys

But I wasn't linking the collected key in the Parameters section with the Resources section... What I need to do is simply make a reference in the Properties section inside Resource, as follows:

Parameters:
.........
  myKeyPair: 
    Description: Amazon EC2 Key Pair
    Type: "AWS::EC2::KeyPair::KeyName"

Resources:
.......
  EC2Instance:
    Type: AWS::EC2::Instance
    Properties:
       ................
      KeyName:
        Ref: KeyName
       ................

That did the trick!!!

k.Cyborg
  • 121