DevOps
No official Terraform provider exists for Synology DSM. Here's the realistic pattern: configure S3/B2 backups, Hyper Backup, DNS, VPN, and the DSM API from Terraform — homelab best practices.
LLuca Berton1 min read
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Synology DSM has no official Terraform provider in 2026. The realistic pattern: Terraform manages the cloud and network around the Synology — DNS, S3 / B2 backup buckets, ACME certificates, VPN — and Synology's own UI / DSM API handles share-level config. For full lifecycle, wrap the DSM API with null_resource calls or restapi provider.
Cloud Backup Bucket (S3)
resource "aws_s3_bucket" "syno_backup" {
bucket = "syno-${var.hostname}-backup"
}
resource "aws_s3_bucket_versioning" "syno_backup" {
bucket = aws_s3_bucket.syno_backup.id
versioning_configuration { status = "Enabled" }
}
resource "aws_s3_bucket_lifecycle_configuration" "syno_backup" {
bucket = aws_s3_bucket.syno_backup.id
rule {
id = "tier-cold"
status = "Enabled"
transition {
days = 30
storage_class = "GLACIER_IR"
}
}
}
resource "aws_iam_user" "syno_backup" {
name = "syno-backup"
}
resource "aws_iam_access_key" "syno_backup" {
user = aws_iam_user.syno_backup.name
}Configure Synology Hyper Backup → S3 with the access key.
DSM API via restapi Provider
terraform {
required_providers {
restapi = { source = "Mastercard/restapi", version = "~> 1.19" }
}
}
provider "restapi" {
alias = "dsm"
uri = "https://${var.dsm_host}:5001"
insecure = false
write_returns_object = true
username = var.dsm_user
password = var.dsm_password
}DSM uses a session-token auth flow — wrap login in a Lambda or a null_resource helper if going deep.
Best Practices
- Don't fight DSM — manage shares in DSM, manage cloud around it in Terraform.
- Hyper Backup → S3 with versioning + Object Lock for ransomware resistance.
- DSM 7.x admin behind 2FA — Terraform should never store the admin password.
- DDNS via Terraform (Cloudflare / Route 53) — DSM's built-in DDNS is fine but not auditable.
#Terraform#Synology#DSM#NAS#Hyper Backup
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