Is there a way to export an AWS CLI Profile to Environment Variables?

问题

When working with certain third-party tools like Terraform, it's not easily possible to specify an AWS CLI profile, and I like working with the environment variables better than the profiles.

Is there a way for me to have the AWS CLI simply export the current profile as AWS_ACCESS_KEY_ID and AWS_SECRET_KEY environment variables to my session?

回答1:

you could use the following command to set your environment variable

aws configure get default.aws_access_key_id
aws configure get default.aws_secret_access_key

if you have another profile you can change, another way to write is

aws configure get aws_access_key_id --profile <new_profile>
aws configure get aws_secret_access_key --profile <new_profile>

so for example it would be

export TF_VAR_access_key=`aws configure get default.aws_access_key_id`

回答2:

There was no way previously, but there is now.

I wrote a script to do exactly this, aws-env:

usage: aws-env [-h] [-n] profile

Extract AWS credentials for a given profile as environment variables.

positional arguments:
  profile          The profile in ~/.aws/credentials to extract credentials
                   for.

optional arguments:
  -h, --help       show this help message and exit
  -n, --no-export  Do not use export on the variables.

If you trust the output of this program, you can use it within your shell session to export the variables of a given profile:

$ aws-env profile-name
export AWS_ACCESS_KEY_ID=...
export AWS_SECRET_ACCESS_KEY=...
$ aws-env -n profile-name
AWS_ACCESS_KEY_ID=...
AWS_SECRET_ACCESS_KEY=...

To export the variables into the current environment variables, execute the output as a command (again, once you have reviewed the source code ;]):

$ echo $AWS_ACCESS_KEY_ID

$ $(aws-env profile-name)
$ echo $AWS_ACCESS_KEY_ID
AKJHC...

回答3:

In Terraform

Terraform actually directly supports AWS CLI profiles: just set an appropriate profile attribute in the aws provider block.

Something like this should do the trick:

provider "aws" {
  profile = "my_profile"
}

Environment variables

If you are instead in a situation in which you have to use environment variables Frederic's suggestion can be used this way:

export AWS_ACCESS_KEY_ID=$(aws configure get my_profile.aws_access_key_id)
export AWS_SECRET_ACCESS_KEY=$(aws configure get my_profile.aws_secret_access_key)

If you want to pass environment vars to a script use:

AWS_ACCESS_KEY_ID=$(aws configure get my_profile.aws_access_key_id) \
AWS_SECRET_ACCESS_KEY=$(aws configure get my_profile.aws_secret_access_key) \
./script.sh

Environment variables with "assume role"

If you use profiles to assume a role specified in config field role_arn, then things get a little trickier as the credentials are generated on the fly (and expire after a while).

But it's still feasible:

read AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_SESSION_TOKEN <<< \
   $(aws sts assume-role                                           \
     --role-arn $(aws configure get my_profile.role_arn)           \
     --role-session-name my_profile_session --output text |        \
     awk '/^CREDENTIALS/ { print $2, $4, $5 }')

回答4:

I like Kay's ideas of a script that exports the desired profile so I wrote one too:

PROFILES=$(awk -F"\\\]|\\\[" '/^\[/{print $2}' ~/.aws/credentials)

select PROFILE in $PROFILES; do
  export AWS_ACCESS_KEY_ID="$(aws configure get aws_access_key_id --profile $PROFILE)"
  export AWS_SECRET_ACCESS_KEY="$(aws configure get aws_secret_access_key --profile $PROFILE)"
  export AWS_DEFAULT_REGION="$(aws configure get region --profile $PROFILE)"
  break
done

echo AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY_ID
echo AWS_SECRET_ACCESS_KEY=$(echo $AWS_SECRET_ACCESS_KEY|tr '[:print:]' '*')
echo AWS_DEFAULT_REGION=$AWS_DEFAULT_REGION

Just put it in a file and then source (.) it from your shell.

回答5:

None of these allow for role assumption in profiles (which I use heavily). I made the following very short script in python3 that uses boto3 to do the heavy lifting of role assumption and the like. It may be helpful.

#!/usr/bin/env python3

# export the AWS environment for a given profile

import boto3
import argparse

parser = argparse.ArgumentParser(prog="exportaws",
    description="Extract AWS credentials for a profile as env variables.")
parser.add_argument("profile", help="profile name in ~/.aws/config.")
args = parser.parse_args()
creds = boto3.session.Session(profile_name=args.profile).get_credentials()
print(f'export AWS_ACCESS_KEY={creds.access_key}')
print(f'export AWS_SECRET_ACCESS_KEY={creds.secret_key}')
print(f'export AWS_SESSION_TOKEN={creds.token}')

来源：https://stackoverflow.com/questions/40852223/is-there-a-way-to-export-an-aws-cli-profile-to-environment-variables

标签

amazon-web-services

aws-cli