Syncthing

Syncthing Verified

Continuous peer-to-peer file synchronization between devices

syncbackupp2p
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Continuous peer-to-peer file synchronization between devices

  • Peer-to-peer sync, no cloud middleman
  • Encrypted transport and versioned file history
  • Runs on desktop, NAS, and servers with a web GUI

Deploy quick reference

Launch URLStack Outputs → ResolvedLaunchUrl
The instance's public IPStack Outputs → PublicIp
Admin console/ · The web GUI is open at / for local use; before exposing it publicly, configure GUI access protection per the upstream docs (Settings > GUI). There are no preset accounts.
See the full step-by-step guide in Deployment

Quick Deploy

Image pinned by verified digest
us-east-1
t3.small
30 GB

≈ $23/mo — Verified default in us-east-1: ~$15.2 t3.small + ~$4 for the 20 GB root and 30 GB data gp3 volumes + $3.65 public IPv4 per month. Transfer traffic is extra.

After you deploy

  1. The CloudFormation wizard opens with everything prefilled (stack "corenova-syncthing-v2-1-5") — review and click "Create stack".
  2. Wait until the stack status reaches CREATE_COMPLETE (about 10 minutes). Outputs are only visible after completion.
  3. Open the stack's Outputs tab — everything you need is there:
    • ResolvedLaunchUrlAccess URL — open this in your browser
    • PublicIpThe instance's public IP
    • PublicDnsNameThe instance's public DNS name
  4. Open the access URL in your browser — the app is ready to use.
  5. Admin console — Open your access URL followed by this path: /

    The web GUI is open at / for local use; before exposing it publicly, configure GUI access protection per the upstream docs (Settings > GUI). There are no preset accounts.

Good to know

  • Sync folders live on a retained volume (/var/syncthing). It keeps billing after stack deletion; snapshot it, then delete the volume when no longer needed.
  • Default container ports 22000/tcp+udp and 21027/udp are used for device sync (LAN discovery); the CFN security group opens 22000 for cross-device sync.

Next steps

  • Your data lives at /var/syncthing inside the container, on an encrypted EBS volume. Find the instance by its ID in the EC2 console.
  • Back up before any changes: Upgrading and backups guide
  • To upgrade to a newer verified version: Version history

Deleting the stack terminates the host, but the data volume is retained and continues billing. Snapshot it first, then delete the retained volume manually when you no longer need it.

Versions

View full version history
VersionsVerified AtVerifiedStatusAWS Tested
v2.1.5Sep 11, 2026 VerifiedInitialAWS · referenced

Configuration

Container Port

8384

AWS Regions

us-east-1

Supported Architectures

x86_64

AMI

ami-025d99823a4caad37

Updates

v2.1.5Sep 11, 2026 VerifiedInitial

FAQ

  • CoreNova Launch verifies software and provides deployable artifacts; deployment runs in your own AWS account.
  • Verification status comes from the upstream Manifest — the site never guesses it.