Proposal: New Chaos Fault for AWS RDS Instance (#4860)

Signed-off-by: Jongwoo Han <jongwooo.han@gmail.com>
Co-authored-by: Namkyu Park <53862866+namkyu1999@users.noreply.github.com>

proposals/rds-instance-chaos-fault.md

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+| title                                            | authors                                  | creation-date | last-updated |
+|--------------------------------------------------|------------------------------------------|---------------|--------------|
+| Adding a New Chaos Fault - AWS RDS Instance Stop | [@jongwooo](https://github.com/jongwooo) | 2024-09-02    | 2024-09-02   |
+
+# Adding a New Chaos Fault - AWS RDS Instance Stop
+
+- [Summary](#summary)
+- [Motivation](#motivation)
+  - [Goals](#goals)
+  - [Non-Goals](#non-goals)
+- [Proposal](#proposal)
+  - [Use Cases](#use-cases)
+  - [Implementation Details](#implementation-details)
+- [Risks and Mitigations](#risks-and-mitigations)
+- [Upgrade / Downgrade Strategy](#upgrade--downgrade-strategy)
+- [Drawbacks](#drawbacks)
+- [Alternatives](#alternatives)
+- [References](#references)
+
+## Summary
+
+[Amazon Relational Database Service (RDS)](https://aws.amazon.com/en/rds/) is a managed relational database service provided by AWS. It is a fully managed database service that makes it easy to set up, operate, and scale a relational database in the cloud.
+So I want to add a new chaos fault(rds instance stop) to Litmus ChaosHub.
+
+## Motivation
+
+Litmus ChaosHub has plenty of Chaos Faults. But there is no Chaos Fault for RDS. RDS is a widely used service in AWS. So I want to add a new Chaos Fault for RDS. Adding 'rds instance stop' Chaos Fault to Litmus ChaosHub can help create a more resilient system.
+### Goals
+
+- Adding a 'rds instance stop' Chaos Fault to [Litmus ChaosHub](https://hub.litmuschaos.io/)
+- Fixing [litmus-go](https://github.com/litmuschaos/litmus-go) and [chaos-charts](https://github.com/litmuschaos/chaos-charts) codes
+
+### Non-Goals
+
+- Fixing Litmus codes except for [litmus-go](https://github.com/litmuschaos/litmus-go) and [chaos-charts](https://github.com/litmuschaos/chaos-charts) is a non-goal
+
+## Proposal
+
+### Use Cases
+
+#### Use case 1
+
+In Chaos Studio, Users can select 'rds instance stop' Chaos Fault as part of the Chaos Experiment. They can compose it with other Chaos Faults.
+
+### Implementation Details
+
+Here's a Chaos Fault Scenario.
+
+![rds-fault-scenario](./images/rds-fault-scenario.png)
+
+#### Phase 1 - Add scenario to the litmus-go repository
+
+I will use `litmuschaos/go-runner` image. So I am going to add a new case in the litmus-go repository.
+
+#### Phase 2 - Add a new Chaos Fault to the Litmus ChaosHub
+
+After Phase 1 PR gets merged, I will raise a PR that adds a 'rds instance stop' Chaos Fault to the `chaos-charts` repository. When all is done, the user can easily assault the AWS RDS instance.
+
+## Risks and Mitigations
+
+We need to grant proper RBAC permissions to the runner container. Granting override permissions may affect other systems.
+
+## Upgrade / Downgrade Strategy
+
+## Drawbacks
+
+## Alternatives
+
+## References
+
+- [Amazon Relational Database Service (RDS)](https://aws.amazon.com/en/rds/)