AWS Configuration

AWS Configure at Amazon is used to track all the configurations from the AWS resources that are interlinked with your AWS account. You can also use this AWS configure option to get the historical and current configuration for each and every resource of AWS by availing the relationship between the resources. The AWS resource in configures can be consists of Amazon EC2 instance, EBS volume, ENI (Elastic Network Interface) or the security group. The AWS configure is used to access and manage the account with the help of the AWS management console with the help of the AWS command-line interface.

Configuration Variables in Amazon:

The following are some of the configuration variables in the Amazon according to the config file:

AWS access key ID: This configuration is used to provide an access key part for your credentials.
AWS secret key access: The AWS secret access key is one of the parts of credentials to provide security.
AWS session token: This particular configuration variable is used to set a session in the token part of your credentials.
Metadata service timeout: This command is used to get the number of seconds to wait until the Metadata request services time out. This variable configuration in an IAM role helps to provide the login credentials.
Metadata service num attempts: This configuration variable is used for attempts that are trying to retrieve the valid credentials. If you want to know about certain values by using the IAM role on an Amazon EC2 instance you can easily set default values.

Configuring the AWS CLI

The following section is going to explain the steps on how to configure the setting with AWS CLI while interacting with AWS accounts like default region and security credentials. Before going to start the process, it is advisable to check the computer's time and date. Otherwise, the request that you are processing for the AWS will reject it.

Quick Configuration:

This quick configuration concept can be used for the general purpose which can configure the AWS command within a fraction of seconds in order to set up the whole AWS CLI installation process. Generally, this AWS CLI concept will prompt in the four-stage of information with the account credentials like AWS access key ID and the AWS secret access key.

How to get the access key ID and secret access key for an IAM user?

Basically, the access keys may consist of the ID and secret access key that are specifically used to sign the entire programmatic request in AWS. Don't you have any access keys? Then you can also create them by using the AWS management console. It is recommendable to use the IAM access keys instead of the AWS root user access keys, as it lets the user control and secure the access of AWS resources and services contained in your AWS account.

You can view or download those secret keys when you are creating them for the first time or else you can recover them according to your need by later. Of course, you can create the access keys at any time by using all the permission that is needed for the IAM actions. The following are the described steps on how to create the access key ID and secret access key for the IAM user.

• First, open the IAM console.
• You can choose the number of users from the navigation pane of the console.
• Now select the IAM username.
• Before going to create an access key, choose all the security credentials.
• Use the SHOW option in order to see the new access key.
• Now download the key pair with the .csv file extension and store them in a secured location.

Configuration Settings and Precedence:  

Coming to the configuration settings and precedence the Amazon CLI will make use of the provider chain from the base of AWS credentials contained in a various number of places, which includes the user environment or system and local AWS configuration files. However, the AWS CLI in Amazon will look over the configuration credentials and be set in the below-described order.

1. Command line options: In this region, the output format and the profile must be specified and described as one of the command options which override according to the default settings.

2. Environment variables:  AWS secret access key, AWS session token, and AWS access key are some of the environment variables.

3. AWS credential file: This file is located at .aws with the respective credentials on MAC, Linux or UNIX, which contains the multiple named profiles along with the default one.

4. CLI  configuration file: This file is typically located as same as in the AWS credential file with .aws config on Unix, Mac OS, and Linux, which may contain the default named profiles along with the specific configuration parameters of CLI.

5. Contains credentials: As all these services are provided by the Amazon EC2 instance which is used to assign the role for your task.

6. Instance profile credentials: The credentials contained in the Amazon configure are specifically used on EC2 instances with a particular role that can be delivered via the Amazon EC2 metadata service.

Available Commands in AWS Configure:

Add:

This Add command in the AWS configure is used as a services JSON model in order to choose the perfect location that contains in the AWS model. Once the model is added to your AWS account the CLI commands and Boto3 customers will automatically be available in the JSON model.

Get:

Want to get the configuration value for your respective config rule, then this Get command in the AWS configure is the perfect option. This command will be used to print the value of the configuration file that consists of the AWS config file. It can also help to get support for two types of configuration values like qualified and unqualified config values. This Get in the AWS configure is used to look only at the values that consist of the configuration file. It won't evaluate all the variable that is specified in the command line arguments.

List:

This command is used to list out the AWS CLI configuration data, which will automatically display the data easily. For each and every configuration item, it can show the value where the value can be retrieved through the variable names. By considering an example, you can also provide the perfect AWS region in the environment variable that will show a command of the region.

Set:

The Set command in the AWS configure is used to set a configuration value according to the config file. It is also used to set a single configuration value that will support both the unqualified and qualified documents in the get command. You must provide the configuration name with respect to the values. In this file, the configuration file doesn't exist as it can create automatically. If it exists then the value will automatically get updated with the new values.

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