Is it possible to append secrets while preserving the manually added existing secrets

[yasithab-pf]

Hello,

Is it possible to append secrets while preserving the manually added existing secrets? Please refer to the details provided below.

Terraform Version

Terraform v1.3.7
on darwin_amd64

Affected Resource(s)

• vault_generic_secret

Terraform Configuration

resource "vault_generic_secret" "db-mysql-secrets" {
  count = 1
  path  = "kv/secret/databases/mysql/${terraform.workspace}/testdb"

  data_json = <<EOT
    {
    "MASTER_USERNAME": "${var.rds_aurora_mysql_db_master_username}",
    "MASTER_PASSWORD": "${random_password.db-mysql.0.result}",
    "METABASE_USERNAME": "${var.rds_aurora_mysql_db_metabase_username}",
    "METABASE_PASSWORD": "${random_password.db-mysql.1.result}"
    }
    EOT

#  lifecycle {
#    ignore_changes = [
#      data_json,
#    ]
#  }
}

Debug Output

N/A

Panic Output

N/A

Expected Behavior

When there are manually added secrets in the vault, instead of removing those manually added values, it should append the values defined in vault_generic_secret while retaining the existing ones.

Actual Behavior

Executing terraform apply causes the removal of manually added secrets in the vault, replacing them solely with the values specified in vault_generic_secret.

Steps to Reproduce

1. terraform apply

Important Factoids

N/A

References

N/A

[waheedshahani]

I am unaware if there is native way to instruct secret resources to preserve old values however you can combine data block with resource block to achieve this.

data "vault_generic_secret" "db-mysql-secrets" {
  path = ......
}

locals {
   new_parameters_and_values = {
    "MASTER_USERNAME": "${var.rds_aurora_mysql_db_master_username}",
    "MASTER_PASSWORD": "${random_password.db-mysql.0.result}",
    "METABASE_USERNAME": "${var.rds_aurora_mysql_db_metabase_username}",
    "METABASE_PASSWORD": "${random_password.db-mysql.1.result}"
    }
}

resource "vault_generic_secret" "db-mysql-secrets" {
  path = .......
  data_json = jsonencode(merge(data.vault_generic_secret.db-mysql-secrets.data), local.new_parameters_and_values )
}

[kaerimichi]

A new resource proposed in #2394 may address this issue!