
AWS (Amazon Web Services) is a cloud computing platform offered by Amazon. It provides a wide range of cloud-based services including computing power, storage, and databases. The platform is designed for businesses to scale and grow by leveraging cloud technology. AWS enables rapid deployment, automation, and resource management via a global network of data centers. It serves diverse industries, from startups to Fortune 500 companies, for various applications.
The AWS Management Console is a web-based interface for managing Amazon Web Services (AWS) resources. It provides an easy-to-use graphical interface to access, configure, and manage AWS services. The AWS Free Tier offers limited free resources for 12 months to new AWS customers, allowing them to explore and learn about AWS services. It includes free allowances for popular services like EC2, S3, and RDS. The Free Tier is aimed at reducing barriers to entry for those new to cloud computing.
AWS Identity and Access Management (IAM) is a service that helps control access to AWS resources. It allows administrators to create and manage users, roles, and permissions. IAM enables secure and granular control over who can perform specific actions on which resources. Policies written in JSON define these permissions and can be attached to entities like users or groups. IAM is central to maintaining security and governance in an AWS environment.
Policies: These are JSON-formatted documents that define permissions to AWS resources. They specify actions (e.g., read, write), resources (e.g., an S3 bucket), and conditions (e.g., IP address, time) under which permissions are either allowed or denied. Policies can be attached to users, groups, or roles to grant them the permissions defined within the policy.
Roles: Roles are IAM entities that define a set of permissions for making AWS service requests but are not associated with a specific user or group. Unlike user credentials, roles can be assumed by different entities, including AWS services, federated users, or even applications running on EC2 instances. Roles are useful for temporary permission escalation and cross-account access, among other use-cases.
Together, policies and roles provide a flexible, robust framework for managing access to AWS resources, enabling secure and granular control over your AWS environment.
In AWS, use the Identity and Access Management (IAM) service to create users. Navigate to the IAM dashboard and select "Users," then "Add user" to create a new user. Assign a username and select access type (Programmatic, AWS Management Console, or both). Attach policies to the user to grant specific permissions or add the user to a group with pre-defined policies. Confirm settings and create the user, noting down any generated credentials like access keys.
Access keys in AWS are part of the credentials used for programmatic access to AWS services. An access key consists of two elements: an Access Key ID and a Secret Access Key. The Access Key ID is a unique identifier, while the Secret Access Key acts like a password and should be kept confidential. These keys are used to sign requests to AWS services via API calls, SDKs, or the AWS Command Line Interface (CLI). They are associated with an individual IAM user or AWS service, and the permissions attached to that user or service apply when the access keys are used. Always follow best practices for storing and managing access keys to ensure the security of your AWS resources.
Go to the AWS Management Console and navigate to the Identity and Access Management (IAM) section.
Click on "Roles" in the sidebar, then select "Create role."
Choose the AWS service or entity that will assume the role, then click "Next: Permissions."
Attach policies that define the permissions for this role.
Review the settings, give the role a name, and click "Create role" to finalize.
AWS CloudShell is a browser-based shell that provides an environment for managing, exploring, and interacting with your AWS resources. It comes pre-configured with popular AWS CLI tools, SDKs, and other utilities, eliminating the need for local installations. CloudShell runs on an Amazon Linux environment and automatically authenticates your AWS console user, simplifying the process of running commands and scripts. It provides a convenient way to quickly run AWS CLI commands, manage files, and execute scripts, all directly from the AWS Management Console. CloudShell is intended to enhance your AWS management experience by enabling you to perform operations without leaving the web console.
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