Introduction: In this article we explain how to provision AWS ElastiCache Serverless for Redis using OpenTofu and Valkey, step by step, with recommendations for IAM and password authentication, deployment of the Tofu code, connection from redis-cli and resource cleanup. We also introduce Q2BSTUDIO, a custom software development company and specialists in artificial intelligence, cybersecurity and AWS and Azure cloud services, to help you integrate this solution into custom application and custom software projects.
Who we are: Q2BSTUDIO is a software development company that creates custom applications and custom software solutions. We are specialists in artificial intelligence, AI for businesses, AI agents, cybersecurity, business intelligence and Power BI services, and we work with AWS and Azure cloud services to deliver secure and scalable infrastructures.
Flow summary: 1 Prepare environment 2 Define infrastructure with OpenTofu 3 Configure authentication with Valkey and IAM or managed password 4 Deploy with OpenTofu 5 Connect with redis-cli 6 Clean up resources.
Prerequisites: AWS account with permissions to create IAM roles, VPC, subnets and ElastiCache resources. OpenTofu installed on your workstation. redis-cli client available. Valkey configured to generate or manage secure credentials. Basic knowledge of VPC networking and security.
Step 1 Prepare the environment: Configure your AWS credentials using the method you prefer, for example AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables or profiles in the configuration file. Install OpenTofu and confirm the version with the version command. Install redis-cli and Valkey according to your secure credential provider's documentation.
Step 2 Define the infrastructure with OpenTofu: Create a project directory and add a set of Tofu files that describe the AWS provider, the VPC or the use of an existing VPC, private subnets and the necessary resources for ElastiCache Serverless for Redis. In the definition include basic parameters such as region, cluster name, subnets and security policies that allow access from the instances or lambdas that will use Redis. For password authentication, plan to use AWS Secrets Manager or SSM Parameter Store to store the AUTH TOKEN and reference it from the ElastiCache configuration. For IAM, prepare a role with policies that allow management of the ElastiCache resource if you need programmatic control of the control plane.
Design tip: Keep ElastiCache in private subnets and control access through security groups that allow Redis traffic only from authorized sources. Use Secrets Manager for automatic rotation of the AUTH TOKEN if you need greater security, and Valkey for the secure distribution of credentials to your CI CD environments or to your developers.
Step 3 Configure authentication with Valkey and IAM or password: Password option Configure a secret in AWS Secrets Manager with the AUTH TOKEN and reference it from the ElastiCache definition in OpenTofu. Use Valkey to store a copy of the secret in your deployment flow and to share credentials with the team without exposing them in code. IAM option For cases where you want to limit administration through IAM, create a policy that allows the necessary actions on ElastiCache Serverless and associate it with the role or user that will perform the deployment operations. Technical note: access to the Redis data plane usually requires an AUTH password; combine IAM for infrastructure management and AUTH TOKEN for client connection.
Step 4 Deploy with OpenTofu: Initialize the OpenTofu directory, validate the plan and apply it. Example of the command flow in your terminal: initialize, plan, apply and check outputs. Wait for the ElastiCache Serverless resource to become available and capture the endpoint and port provided by the provider. Validate that the AUTH TOKEN secret is created and accessible to the instances that consume Redis.
Step 5 Connect using redis-cli: Get the endpoint and port of the ElastiCache Serverless cluster and the password or token from Secrets Manager or Valkey. Connect from an authorized machine inside the VPC with a command like redis-cli -h ENDPOINT -p PORT -a AUTH_TOKEN. If your architecture uses a bastion or SSH tunnel, establish the tunnel and then run redis-cli pointing to the tunnel's local host. Check basic operations PING SET GET and monitor latency and usage with metrics tools.
Step 6 Cleanup and deletion: When you finish testing or want to clean up the test environment, use OpenTofu destroy to remove the temporary resources. Before destroying, make sure to review dependencies and backups to avoid losing important data. Delete secrets that are no longer needed from Secrets Manager and revoke any temporary role created with extended permissions.
Best practices and security: Protect endpoints in private subnets, rotate AUTH TOKEN through Secrets Manager, use Valkey to distribute credentials without putting them in code, apply the principle of least privilege for IAM roles and continuous monitoring with alerts for anomalies. Integrate these practices if you work with custom applications and artificial intelligence solutions, especially when AI agents or AI workloads for businesses consume in-memory data.
Integration with Q2BSTUDIO projects: At Q2BSTUDIO we design complete solutions that include infrastructure on AWS and Azure, integration of ElastiCache Serverless for low-latency caches in custom applications, and support for AI pipelines for businesses using AI agents and business intelligence services. We also offer cybersecurity services to protect in-memory data and network configurations, and visualization with Power BI when business intelligence dashboards are required.
Keywords for positioning: custom applications, custom software, artificial intelligence, cybersecurity, AWS and Azure cloud services, business intelligence services, AI for businesses, AI agents, Power BI.
If you would like Q2BSTUDIO to prepare a pilot project to integrate AWS ElastiCache Serverless with OpenTofu and Valkey, optimized for your custom applications and with cybersecurity and artificial intelligence standards, contact our team for a personalized consultation.
