18cba9c609
Source commit: 6756e5208c8b79e83d55610251430bc1baef53a3 Public tree identity: sha256:2f58837c3759b4f466cbc274571ee71bc0d24c7552dc009c186394e99123da87
49 lines
2 KiB
Markdown
49 lines
2 KiB
Markdown
# Security
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## Authority
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Clusterflux separates four authority lanes:
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- Client sessions for people.
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- Agent public-key signatures for non-interactive workflows.
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- Node public-key signatures for enrolled workers.
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- Operator credentials for hosted administrative actions.
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The server derives tenant, project, identity, and permission scope from the
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authenticated lane. Request-body identity fields are not authority.
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## Sessions and keys
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Human login uses the configured identity provider and an opaque, nonce- and
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PKCE-bound transaction. The CLI never accepts provider claims or authorization
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codes as a session. Browser-login requests use a dedicated proxy route with
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per-client rate limiting. The hosted service binds only to loopback and does not
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use client-supplied forwarding headers as identity or authorization.
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Enrollment grants are short-lived and single-use. Node and agent signatures bind
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the canonical request body, timestamp, nonce, key fingerprint, and scope.
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Forged, replayed, expired, revoked, cross-tenant, and body-modified requests
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fail.
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Keep `.clusterflux/session.json`, node private keys, agent private keys, and
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operator credentials out of source control. Use protected environment files or
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your secret manager.
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## Execution
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The coordinator does not run arbitrary native user commands. Nodes execute
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commands within their reported capabilities. Linux container environments use
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rootless Podman and avoid privileged defaults.
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Bundle size, canonical argument size, handle count, logs, task history, Debug
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Epoch state, relay state, and coordinator collections are bounded. Resource and
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relay reservations happen before unaffordable work or transfer begins.
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## Artifacts
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Artifact links are scoped, expiring, revocable, and bound to live metadata.
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Digest, size, producer, task attempt, and retaining source are checked. The
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coordinator retains metadata and bounded relay spool state, not durable artifact
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bytes by default.
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Report security issues privately using [SECURITY.md](../SECURITY.md).
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