Configuring credentials in AWS - Visual Walkthrough

Process Flow - Configuring credentials

Start

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Create Credentials File

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Add Access Key & Secret

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Save File in ~/.aws/credentials

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Use AWS CLI or SDK

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Credentials Loaded

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Access AWS Services

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End

This flow shows how AWS credentials are created, saved, and then used by AWS tools to access services.

Execution Sample

AWS

[default]
aws_access_key_id = AKIAEXAMPLE
aws_secret_access_key = wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

This is the content of the AWS credentials file with access key and secret key under the default profile.

Process Table

Step	Action	File/Location	Content Added/Used	Result
1	Create credentials file	~/.aws/credentials	File created	Ready to add keys
2	Add access key ID	~/.aws/credentials	aws_access_key_id = AKIAEXAMPLE	Key ID stored
3	Add secret access key	~/.aws/credentials	aws_secret_access_key = wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY	Secret stored
4	Save file	~/.aws/credentials	File saved with keys	Credentials ready
5	Run AWS CLI command	Uses ~/.aws/credentials	Reads keys	Credentials loaded successfully
6	Access AWS service	AWS SDK/CLI	Uses loaded credentials	Service accessed
7	End	-	-	Process complete

💡 Credentials file saved and used successfully to access AWS services

Status Tracker

Variable	Start	After Step 2	After Step 3	Final
aws_access_key_id	None	AKIAEXAMPLE	AKIAEXAMPLE	AKIAEXAMPLE
aws_secret_access_key	None	None	wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY	wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
credentials_file	Not created	Created empty	Filled with keys	Saved with keys

Key Moments - 3 Insights

Why do we need to save the credentials file in ~/.aws/credentials?

AWS CLI and SDK look for credentials in this default location to authenticate requests, as shown in steps 4 and 5 of the execution_table.

What happens if the access key or secret key is missing or incorrect?

AWS CLI or SDK will fail to authenticate and cannot access services, because the credentials loaded in step 5 will be invalid.

Can we have multiple profiles in the credentials file?

Yes, by adding sections like [profile_name], but this example uses only the default profile as shown in the execution_sample.

Visual Quiz - 3 Questions

Look at the execution_table, at which step is the secret access key added?

A Step 3

B Step 4

C Step 2

D Step 5

💡 Hint

Check the 'Content Added/Used' column for the secret key in the execution_table rows.

According to variable_tracker, what is the value of aws_access_key_id after step 3?

A wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

B None

C AKIAEXAMPLE

D Not created

💡 Hint

Look at the 'After Step 3' column for aws_access_key_id in variable_tracker.

If the credentials file is not saved properly, what will happen at step 5?

A Credentials will load successfully

B AWS CLI will fail to find credentials

C Access key will be auto-generated

D AWS service will be accessed without authentication

💡 Hint

Refer to the 'Result' column at step 5 in execution_table about credentials loading.

Concept Snapshot

AWS credentials are stored in ~/.aws/credentials file.
The file contains access key ID and secret access key under a profile.
AWS CLI and SDK read this file to authenticate requests.
Always save the file securely and never share your keys.
Multiple profiles can be added for different accounts.

Full Transcript

To configure AWS credentials, you create a file named 'credentials' in the '.aws' folder in your home directory. This file holds your access key ID and secret access key under a profile name, usually 'default'. When you run AWS CLI commands or use AWS SDKs, they read this file to authenticate your requests. The process starts by creating the file, adding your keys, saving it, and then using AWS tools that load these credentials to access AWS services. If the credentials are missing or incorrect, authentication fails. You can also manage multiple profiles by adding sections with different names in the credentials file.