hashicorp/terraform-provider-aws

Error: Unsupported argument: blue_green_update

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#44,488 opened on Sep 29, 2025

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Description

Documentation Link(s)

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/db_instance#blue_green_update

Description

I added the next block into my TF config:

  blue_green_update = {
    enabled = true
  }

But I got this error:

│ Error: Unsupported argument
│
│   on modules/private-cloud/replica-rds.tf line 50, in resource "aws_db_instance" "rpostgres_v18":
│   50:   blue_green_update = {
│
│ An argument named "blue_green_update" is not expected here. Did you mean to define a block of type
│ "blue_green_update"?
╵

It seems I did something wrong, but documentation has no examples.

References

https://www.reddit.com/r/Terraform/comments/17s1b4w/trying_to_use_blue_green_update_with_aws_db/

Would you like to implement a fix?

No

Contributor guide

Research direction
Find the documentation for aws db instance, locate the blue green update block, and add a configuration example demonstrating its usage.
Tech stack
go
Domain
documentationcloud
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90