I have an AWS ECS container that runs Jenkins. It runs assuming a role and I wanted to get the access key (both id and secret access key) associated with that role using aws cli within bash shell. I need the key in order to sign a HTTP request being sent to another AWS service using CURL.
I have looked at both aws iam and aws sts commands and I cannot find anything.
Okay I have figured out how to get this information. The meta-data for an instance is made available through a particular IP associated with EC2 instance. In this credentials can be found using:
curl http://169.254.169.254/latest/meta-data/iam/security-credentials/<NAME_OF_ROLE>
Related
My goal is to access my s3 buckets from the command line using my AWS educate account.
I expected to get a list of my s3 buckets in the command prompt. I typed in this command. aws s3 ls
I actually received an error message saying Invalid Access Key ID.
They shown do not match they key on the home age of my AWS educate account.
How do I change the keys listed to match the ones on my AWS Educate home page? I think if I correct this then I will be able to access my s3 buckets with aws cli.
Run:
aws configure
And follow the prompts to configure a new Access Key and Secret Access Key.
If this isn't working, there are two other things you can check:
Have you set any of the following environment variables? https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-envvars.html. These can override the ones set using aws configure
If that fails, check that $HOME/.aws/credentials is not write protected, or even try updating the credentials manually.
My requirement to upload file from local to s3 using aws cli but don't want to use access ID and secret access key while running in command line.
Any suggestions!
It is recommended that you never put AWS credentials in program code.
If the code is running on an Amazon EC2 instance, assign an IAM Role to the instance. The code will automatically detect and use these credentials.
If the code is running on your own computer, run the AWS Command-Line Interface (CLI) aws configure command and enter your IAM credentials (Access Key + Secret Key). They will be stored in the ~/.aws/credentials file and will be automatically accessed by your code.
I am using AWS Secret Manager Service to retrieve some confidential information like SMTP details or connection strings. However, to get secret value from AWS Secret Manager Service it seems like we need to pass the Access key and secret key apart from which secret we want to retrieve. So I am maintaining those values in config file.
public AwsSecretManagerService(IOptions<AwsAppSettings> settings)
{
awsAppSettings = settings.Value;
amazonSecretsManagerClient = new AmazonSecretsManagerClient
(awsAppSettings.Accesskey, awsAppSettings.SecretKey, RegionEndpoint.GetBySystemName(awsAppSettings.Region));
}
public async Task<SecretValueResponse> GetSecretValueAsync(SecretValueRequest secretValueRequest)
{
return _mapper.Map<SecretValueResponse>(await amazonSecretsManagerClient.GetSecretValueAsync(_mapper.Map<GetSecretValueRequest>(secretValueRequest)));
}
So I am thinking I am kind of defeating the whole purpose of using secret manager by maintaining the AWS credentials in app settings file. I am wondering what is the right way to do this
It is not a good practice to pass or add AWS credentials of an IAM User (access key and secret access key) in the code.
Instead, don't pass it and update your code as follows:
amazonSecretsManagerClient = new AmazonSecretsManagerClient
(RegionEndpoint.GetBySystemName(awsAppSettings.Region));
Question: Then how would it access the AWS services?
Answer: If you are going to execute your code on your local system, install and configure AWS CLI instead of passing AWS credentials via CLI or Terminal, it will use those AWS configured credentials to access the AWS services.
Reference for AWS CLI Installation: Installing the AWS CLI
Reference for AWS CLI Configuration: Configuring the AWS CLI
If you are going to execute your code on an AWS service (e.g., EC2 instance), attach an IAM role with that AWS resource (e.g., EC2 instance) having sufficient permissions, it will use that IAM role to access the AWS services.
I seem to have problems running a command to verify that my credentials are configured correctly and that I can connect to AWS as stated here:https://docs.aws.amazon.com/cli/latest/userguide/tutorial-ec2-ubuntu.html:
When running:
$ aws ec2 describe-regions --output table
I get the following output:
An error occurred (AuthFailure) when calling the DescribeRegions
operation: AWS was not able to validate the provided access
credentials
What am I missing?
After installing the AWS CLI (on a fedora machine), I ran
$ aws configure
for AWS Access Key ID and AWS Secret Access Key:
I went to AWS website and created an IAM user.
For that user, I have gone to the security credentials tab and
I have created a new Access key, which is key value pair of Access key ID,Secret access key.
I have used those values for AWS Access Key ID and AWS Secret Access Key but I keep getting the above error message.
What am I missing? Thanks in advance.
You need to pass the profile parameter. This link from AWS has more details
I have EC2 instance.
I'm trying to call aws s3 from it but getting an error
Unable to locate credentials
I tried aws configure which does show everything as empty.
I see IAM role for S3 full permissions assigned to this instance.
Do I need any additional configuration?
If you run aws on an Amazon EC2 instance that has an assigned role, then it should find the credentials automatically.
You can also use this to view the credentials from the instance:
curl http://169.254.169.254/latest/meta-data/iam/security-credentials/
The role name should be listed. Then append it to the command:
curl http://169.254.169.254/latest/meta-data/iam/security-credentials/ROLE-NAME/
You should then be presented with AccessKeyId, SecretAccessKey, etc.
If that information does not appear, it suggests that your role is not correctly attached to the instance. Try unassigning the role and then assign it to the instance again.
First read and follow John Rotenstein's advice.
The SDK (from which the CLI is built from) searches for credentials in the following order:
Environment variables (AWS_ACCESS_KEY_ID ....)
Default Profile (credentials file)
ECS Container Credentials (if running on ECS)
Instance Profile
After verifying that your EC2 instance has credentials in the metadata, double check 1 & 2 to make sure that there are no other credentials present even if empty.
Note: This link argues with my last point (empty credentials file). I never create (store) credentials on an EC2 instance and I only use IAM Roles.
Instance Metadata