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SSE-C ciphertext passthrough replicates via X-Rustfs-Replication-* transport
headers. A MinIO/generic-S3 target silently discards them, storing bare
ciphertext with no decryption material — yet the PUT succeeded, so the object
reported COMPLETED with a silently unreadable replica (backlog#1675 N2).
Fail-closed design:
- SsecPassthroughCapability {Unknown, Supported, Unsupported} cached in
BucketTargetSys per target ARN with a recording timestamp. Entries reset
whenever the target is rebuilt, edited, or removed (arn_remotes_map
lifecycle) and expire after SSEC_PASSTHROUGH_CAPABILITY_TTL (10 minutes):
an expired verdict in either direction is re-earned through the audit, so
an Unsupported target recovers automatically after an upgrade (at most one
wasted PUT+HEAD audit per bad target per TTL window) and a Supported
verdict cannot outlive a backend swapped behind the same endpoint.
- Replication worker (replicate_object and replicate_all): fresh Unsupported
targets never receive the PUT — the attempt fails immediately into the
normal MRF retry channel with a "run ?replication-check to re-probe" hint.
Unknown or expired verdicts are audited: after the PUT the worker HEADs
the replica back through the replication-check channel (source version id
mapped through resolve_read_api_version_id, so null-version objects audit
correctly) and requires SSE-C evidence (the echoed customer-algorithm
header); missing evidence records Unsupported and fails the attempt.
Convergence HEADs are audited the same way, so a broken ciphertext replica
from an earlier attempt can never launder itself into COMPLETED via an
ETag match. The gate/evidence policy is pure (replication_target_boundary,
staleness folded in as an input) for the M2 worker migration.
- replication-check grows an SsecPassthrough probe phase: a probe PUT
carrying the live transport-header shape, HEAD-back for evidence, and a
machine-readable Code BucketRemoteSsecPassthroughUnsupported on failure.
The probe verdict is synced into the runtime capability cache. Unlike
VersionFidelity, a failed SsecPassthrough phase does NOT fail the target
overall — it is a capability limit, not a broken replication contract,
and a plaintext-only deployment against such a target must not turn red.
- fake_s3_target: default mode now models a RustFS target (stores the
transport headers, echoes SSE-C evidence); the new
drop_unlisted_replication_headers mode models MinIO. The journal records
whether a request carried transport headers.
Receiver-echo verification: the replication-check HEAD exemption only skips
SSE-C key validation; the response has always built sse-customer-algorithm
from stored metadata (rustfs/src/app/object_usecase.rs), so no receiver
change was needed — pinned end to end by the replication-check e2e against
a real RustFS target.
Rolling-upgrade constraint: RustFS targets older than the replication-check
HEAD exemption (#5898) answer the audit HEAD without SSE-C evidence (or fail
it outright), so SSE-C replication to such targets reports FAILED. This is
deliberate — FAILED-and-retryable beats a silently undecryptable replica —
and self-heals: once the target is upgraded, the next TTL expiry (or a
manual ?replication-check re-probe) re-audits and records Supported.
Plaintext and managed-SSE replication are unaffected. The capability cache
is per-node; each node audits independently.
Known limitations:
- The audit judges evidence from the echoed customer-algorithm header only.
A hypothetical target that preserves that one header while dropping other
transport headers (partial-drop) would pass the audit; no known target
behaves this way — observed targets drop the whole unknown-header family.
- A mixed-version target cluster can flap the verdict between audits routed
to different target nodes until the rollout completes; the TTL bounds how
long each stale verdict persists.
New e2e (backlog#1675 C1 + N2, red-first): fail-closed against a
header-dropping fake (FAILED + no second PUT via the capability cache,
journal-asserted; red run showed the old COMPLETED), replication-check
reports the SsecPassthrough phase Code while the target stays OK overall,
SSE-C heal convergence after a real target outage, and SSE-C
existing-object resync landing a REPLICA readable with the customer key.
TTL expiry in both directions is pinned at the cache and gate seams.
RustFS is a high-performance distributed object storage software built using Rust
Getting Started · Docs · Bug reports · Discussions
English | Simplified Chinese
RustFS is a high-performance distributed object storage software built using Rust, one of the most popular languages worldwide. Along with MinIO, it shares a range of advantages such as simplicity, broad S3 API compatibility for supported features, open-source nature, support for data lakes, AI, and big data. Furthermore, it has a better and more user-friendly open-source license in comparison to other storage systems, being constructed under the Apache license. As Rust serves as its foundation, RustFS provides faster speed and safer distributed features for high-performance object storage.
Features
- High Performance: Built with Rust, ensuring speed and efficiency.
- Distributed Architecture: Scalable and fault-tolerant design for large-scale deployments.
- S3 Compatibility: Integration with common S3-compatible applications; current coverage is tracked in the S3 compatibility matrix.
- Data Lake Support: Optimized for big data and AI workloads.
- Open Source: Licensed under Apache 2.0, encouraging community contributions and transparency.
- User-Friendly: Designed with simplicity in mind, making it easy to deploy and manage.
RustFS vs MinIO
Stress test server parameters
| Type | parameter | Remark |
|---|---|---|
| CPU | 2 Core | Intel Xeon(Sapphire Rapids) Platinum 8475B , 2.7/3.2 GHz |
| Memory | 4GB | |
| Network | 15Gbp | |
| Driver | 40GB x 4 | IOPS 3800 / Driver |
https://github.com/user-attachments/assets/2e4979b5-260c-4f2c-ac12-c87fd558072a
RustFS vs Other object storage
| RustFS | Other object storage |
|---|---|
| Powerful Console | Simple and useless Console |
| Developed based on Rust language, memory is safer | Developed in Go or C, with potential issues like memory GC/leaks |
| Does not report logs to third-party countries | Reporting logs to other third countries may violate national security laws |
| Licensed under Apache, more business-friendly | AGPL V3 License and other License, polluted open source and License traps, infringement of intellectual property rights |
| S3-compatible core, with coverage tracked in the compatibility matrix | Variable S3 support and local cloud vendor coverage |
| Rust-based development, strong support for secure and innovative devices | Poor support for edge gateways and secure innovative devices |
| Stable commercial prices, free community support | High pricing, with costs up to $250,000 for 1PiB |
| No risk | Intellectual property risks and risks of prohibited uses |
Quickstart
To get started with RustFS, follow these steps:
-
One-click installation script (Option 1)
curl -O https://rustfs.com/install_rustfs.sh && bash install_rustfs.sh -
Docker Quick Start (Option 2)
# Docker Hub (recommended)
docker run -d -p 9000:9000 -v /data:/data rustfs/rustfs:latest
# Alternative using Podman
podman run -d -p 9000:9000 -v /data:/data rustfs/rustfs:latest
- Access the Console: Open your web browser and navigate to
http://localhost:9001to access the RustFS console, default username and password isrustfsadmin. - Create a Bucket: Use the console to create a new bucket for your objects.
- Upload Objects: You can upload files directly through the console or use S3-compatible APIs to interact with your RustFS instance.
Documentation
For detailed documentation, including configuration options, API references, and advanced usage, please visit our Documentation.
Getting Help
If you have any questions or need assistance, you can:
- Check the FAQ for common issues and solutions.
- Join our GitHub Discussions to ask questions and share your experiences.
- Open an issue on our GitHub Issues page for bug reports or feature requests.
Links
- Documentation - The manual you should read
- Changelog - What we broke and fixed
- GitHub Discussions - Where the community lives
Contact
- Bugs: GitHub Issues
- Business: hello@rustfs.com
- Jobs: jobs@rustfs.com
- General Discussion: GitHub Discussions
- Contributing: CONTRIBUTING.md
Contributors
RustFS is a community-driven project, and we appreciate all contributions. Check out the Contributors page to see the amazing people who have helped make RustFS better.
License
RustFS is a trademark of RustFS, Inc. All other trademarks are the property of their respective owners.