Question

使用Terraform，我可以使用区域1中的以下配置成功创建RDS群集 -

resource "aws_rds_cluster" "aurora_cluster" {

    cluster_identifier              = "${var.environment_name}-aurora-cluster"
    database_name                   = "mydb"
    master_username                 = "${var.rds_master_username}"
    master_password                 = "${var.rds_master_password}"
    backup_retention_period         = 14
    final_snapshot_identifier       = "${var.environment_name}AuroraCluster"

    apply_immediately               = true
    db_cluster_parameter_group_name = "${aws_rds_cluster_parameter_group.default.name}"

    tags {
        Name         = "${var.environment_name}-Aurora-DB-Cluster"
        ManagedBy    = "terraform"
        Environment  = "${var.environment_name}"
    }

    lifecycle {
        create_before_destroy = true
    }
}

resource "aws_rds_cluster_instance" "aurora_cluster_instance" {

    count                 = "${length(split(",", var.multi_azs))}"

    identifier            = "${var.environment_name}-aurora-instance-${count.index}"
    cluster_identifier    = "${aws_rds_cluster.aurora_cluster.id}"
    instance_class        = "db.t2.small"
    publicly_accessible   = true
    apply_immediately     = true

    tags {
        Name         = "${var.environment_name}-Aurora-DB-Instance-${count.index}"
        ManagedBy    = "terraform"
        Environment  = "${var.environment_name}"
    }

    lifecycle {
        create_before_destroy = true
    }
}

output "db_primary_cluster_arn" {
 rds_cluster.aurora_cluster.cluster_identifier}"
  value = "${"${format("arn:aws:rds:%s:%s:cluster:%s", "${var.db_region}", "${data.aws_caller_identity.current.account_id}", "${aws_rds_cluster.aurora_cluster.cluster_identifier}")}"}"
}

并使用下面的区域2 -

创建一个跨区域副本

resource "aws_rds_cluster" "aurora_crr_cluster" {

    cluster_identifier            = "${var.environment_name}-aurora-crr-cluster"
    database_name                 = "mydb"
    master_username               = "${var.rds_master_username}"
    master_password               = "${var.rds_master_password}"
    backup_retention_period       = 14
    final_snapshot_identifier     = "${var.environment_name}AuroraCRRCluster"
    apply_immediately             = true

    # Referencing to the primary region's cluster
    replication_source_identifier = "${var.db_primary_cluster_arn}"

    tags {
        Name         = "${var.environment_name}-Aurora-DB-CRR-Cluster"
        ManagedBy    = "terraform"
        Environment  = "${var.environment_name}"
    }

    lifecycle {
        create_before_destroy = true
    }

}

resource "aws_rds_cluster_instance" "aurora_crr_cluster_instance" {

    count                 = "${length(split(",", var.multi_azs))}"

    identifier            = "${var.environment_name}-aurora-crr-instance-${count.index}"
    cluster_identifier    = "${aws_rds_cluster.aurora_crr_cluster.id}"
    instance_class        = "db.t2.small"
    publicly_accessible   = true
    apply_immediately     = true

    tags {
        Name         = "${var.environment_name}-Aurora-DB-Instance-${count.index}"
        ManagedBy    = "terraform"
        Environment  = "${var.environment_name}"
    }

    lifecycle {
        create_before_destroy = true
    }

}

当我想将区域2中的跨区域副本提升为独立群集时 - 我尝试从跨区域RDS群集中删除复制源（replication_source_identifier）并执行＆＃34; terraform apply＆＃34;。我看到Terraform的输出说 -

module.db_replica.aws_rds_cluster.aurora_crr_cluster: Modifying... (ID: dev-aurora-crr-cluster)
  replication_source_identifier: "arn:aws:rds:us-east-2:account_nbr:cluster:dev-aurora-cluster" => ""
module.db_replica.aws_rds_cluster.aurora_crr_cluster: Modifications complete after 1s (ID: dev-aurora-crr-cluster)

Apply complete! Resources: 0 added, 1 changed, 0 destroyed.

但是，我看到＆＃34;没有变化＆＃34;发生在AWS控制台上的跨区域群集中。我仍然看到复制源是现有的并且相同，并且交叉区域集群没有更新为独立的＆＃34;在AWS。

如果我尝试通过AWS CLI执行相同的操作 -

aws rds promote-read-replica-db-cluster --db-cluster-identifier="dev-aurora-crr-cluster" --region="us-west-1"

我发现更改会立即触发，并且跨区域副本将提升为独立群集。有谁知道我可能做错了什么？或Terraform不支持将跨区域副本提升为独立群集。请指教。

在跨区域群集中断开terraform aws_rds_cluster复制

0 个答案: