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* feat(sandbox): default to official Alpine sandbox image default_sandbox_image() now returns docker.io/library/alpine:3.22, a generic version-qualified official image, so a fresh install no longer depends on the community sandbox image catalog. All compute drivers (docker, podman, kubernetes, vm) inherit this fallback. Part of #3116. Signed-off-by: Akram Signed-off-by: Akram <akram.benaissi@gmail.com> * feat(deploy): default deployment configs to the official Alpine sandbox image Update the shared gateway default_image, Helm chart values, the standalone Kubernetes manifest, and the dev gateway task scripts to use docker.io/library/alpine:3.22 instead of the community base image, consistent with default_sandbox_image(). GPU e2e image-build base is left unchanged (CUDA needs a glibc base). Part of #3116. Signed-off-by: Akram Signed-off-by: Akram <akram.benaissi@gmail.com> * feat(driver): default to numeric non-root identity for USER-less images With the default sandbox image now Alpine, images that declare no OCI USER must start instead of being rejected. When the image declares no USER and the policy requests none, the Podman and Docker drivers now supply a numeric non-root identity (DEFAULT_SANDBOX_UID/GID = 1000) instead of rejecting, matching the numeric-identity behavior of the Kubernetes and VM drivers. The supervisor's resolved-identity path runs the sandbox as a synthesized non-root account without the account existing in the image. Images that declare a USER keep the OCI resolution path unchanged. Part of #3116. Signed-off-by: Akram <akram.benaissi@gmail.com> Signed-off-by: Evan Lezar <elezar@nvidia.com> * test(conformance): use Alpine workload image Signed-off-by: Evan Lezar <elezar@nvidia.com> * refactor(policy): drop community image /app path from default policy The restrictive default policy granted read-only access to /app, a directory that only existed in the community base image. A generic Alpine default has no /app, so remove it. Landlock best-effort already ignores absent paths; this just stops advertising a community-specific layout in the default. Part of #3116. Signed-off-by: Akram Signed-off-by: Akram <akram.benaissi@gmail.com> * docs(config): document Alpine default images Signed-off-by: Evan Lezar <elezar@nvidia.com> * fix(podman): report early sandbox termination Signed-off-by: Evan Lezar <elezar@nvidia.com> * fix(podman): initialize rootless workspace ownership Signed-off-by: Evan Lezar <elezar@nvidia.com> * fix(sandbox): qualify NVIDIA Ubuntu default Signed-off-by: Drew Newberry <anewberry@nvidia.com> * fix(podman): initialize rootful default workspace Signed-off-by: Drew Newberry <anewberry@nvidia.com> * feat(sftp): add native sandbox adapter Signed-off-by: Drew Newberry <anewberry@nvidia.com> * fix(sftp): gate runtime helper support to Linux Signed-off-by: Drew Newberry <anewberry@nvidia.com> * fix(sftp): support standard OpenSSH file operations Signed-off-by: Drew Newberry <anewberry@nvidia.com> * fix(sftp): harden rename and special file handling Signed-off-by: Drew Newberry <anewberry@nvidia.com> * refactor(runtime): remove community image dependencies Signed-off-by: Drew Newberry <anewberry@nvidia.com> * test(e2e): build provider readiness tool fixture Signed-off-by: Drew Newberry <anewberry@nvidia.com> * fix(e2e): use a dedicated Noble fixture for Docker tests Signed-off-by: Evan Lezar <elezar@nvidia.com> --------- Signed-off-by: Akram Signed-off-by: Akram <akram.benaissi@gmail.com> Signed-off-by: Evan Lezar <elezar@nvidia.com> Signed-off-by: Drew Newberry <anewberry@nvidia.com> Co-authored-by: Evan Lezar <elezar@nvidia.com> Co-authored-by: Drew Newberry <anewberry@nvidia.com>
35 lines
1.7 KiB
Plaintext
35 lines
1.7 KiB
Plaintext
---
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# SPDX-FileCopyrightText: Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0
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title: "Default Policy Reference"
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sidebar-title: "Default Policy"
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description: "Breakdown of the built-in default policy applied when you create an OpenShell sandbox without a custom policy."
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keywords: "Generative AI, Cybersecurity, AI Agents, Sandboxing, Security, Policy"
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position: 2
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---
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When you create a sandbox without `--policy`, OpenShell applies a restrictive built-in fallback. The policy comes from the OpenShell runtime and does not depend on the selected workload image.
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## Filesystem Access
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The fallback includes the sandbox working directory and grants read-only access to standard runtime paths:
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- `/usr`
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- `/lib`
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- `/proc`
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- `/dev/urandom`
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- `/etc`
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- `/var/log`
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It grants read-write access to `/tmp` and `/dev/null`. Landlock enforcement uses `best_effort` compatibility so OpenShell can use the strongest ABI available on the host while retaining its mandatory baseline protections.
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## Network Access
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The fallback defines no network policies or provider-derived endpoints, so outbound network access is denied. Attach a provider or apply a custom policy that names the required endpoints and executable paths before running a networked agent.
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## Process Identity
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The fallback leaves process identity selection to the compute driver. Docker and Podman honor a non-root OCI `USER`; when an image declares no user, they use numeric UID and GID `1000`. Kubernetes and MicroVM drivers apply their configured non-root identities.
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Use `openshell policy get <sandbox> --full` to inspect the effective policy. Refer to [Customize Sandbox Policies](/sandboxes/policies) to replace the fallback.
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