Authenticating and Running an EC2 Instance: AWS - amazon-web-services

Question

I am attempting to create an EC2 instance and then add it to my Auto Scaling group. I am having a lot of issues trying to authenticate. I am looking for a simple way to authenticate a request using my access key to simply start an instance. What I have tried so far:
//Authenticate AWS:
var myCredentials = new AWS.CognitoIdentityCredentials({
IdentityPoolId:'us-west-2:IdentityPoolID'
});
var myConfig = new AWS.Config({
credentials: myCredentials, region: 'us-west-2'
});
AWS.config = myConfig
var minInst = 1;
var maxInst = 3;
var ec2 = new AWS.EC2();
//Set up parameters for EC2 Instances:
var params = {
ImageId: 'ami-6e1a0117',
MaxCount: minInst,
MinCount: maxInst,
InstanceInitiatedShutdownBehavior: 'terminate',
InstanceType: 't2.micro',
Monitoring: {
Enabled: false
},
NetworkInterfaces: [{
AssociatePublicIpAddress: true,
DeleteOnTermination: true,
}],
Placement: {
AvailabilityZone: 'us-west-2',
},
SecurityGroupIds: [
'sg-b0307ccd',
],
SecurityGroups: [
'CAB432Assignment2SG',
],
};
ec2.runInstances(params, function(err, data) {
if (err){
console.log(err, err.stack); //An error occurred
}
else{
console.log(data); //Successful Response
}
});
I know this code is wrong. I just don't know to fix it. The error I get is:
CredentialsError: Missing credentials in config
Any help would be greatly appreciated.

Answer 1

Delete this section of code entirely:
//Authenticate AWS:
var myCredentials = new AWS.CognitoIdentityCredentials({
IdentityPoolId:'us-west-2:IdentityPoolID'
});
var myConfig = new AWS.Config({
credentials: myCredentials, region: 'us-west-2'
});
AWS.config = myConfig
Change this:
var ec2 = new AWS.EC2();
To this:
var ec2 = new AWS.EC2({region: 'us-west-2'});
Then go read this page in the Setting Credentials in Node.js documentation. In particular, you need to do one of the following:
Add an IAM role to your EC2 instance, if this is running on EC2.
Add an IAM execution role to your Lambda function if this is running on Lambda.
Create either a ~/.aws/credentials file with your keys. This can be done with the aws configure command if you have the AWS CLI installed.
Set the keys as environment variables.