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Taylor MutchandSeth Jennings 8eacb4779f feat(kubernetes): add sidecar supervisor topology (#2076)
* feat(kubernetes): add sidecar supervisor topology

Add the Kubernetes sidecar supervisor topology, its Helm/Skaffold configuration, topology documentation, and sidecar e2e matrix coverage. Skip root-only sandbox identity rewriting when process enforcement is network-only so the low-permission sidecar process container can start successfully.

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(supervisor): avoid similar process id names

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(supervisor): avoid similar process id names

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(sandbox): avoid similar proxy id names

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* docs(kubernetes): clarify sidecar topology limits

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): keep sidecar process leaf capless

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): refresh sidecar provider env snapshots

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* test(supervisor): align hot-swap identity regression

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): stage sidecar mtls files before proxy chown

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): simplify sidecar supervisor topology

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* chore(helm): reuse sidecar skaffold values

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(supervisor): avoid similar iptables helper names

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(e2e): harden kube gateway wrapper setup

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(supervisor): avoid nft batch rollback on OCP

Run nftables setup as individual commands so optional conntrack and log expressions can fail without rolling back required table, chain, and reject rules.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): preserve process identity in sidecar topology

Render sidecar pods with a shared process namespace, keep binary-aware network policy enabled, and move Kubernetes sidecar settings under the nested sidecar config table.

Also apply unprivileged Landlock/seccomp setup in NetworkOnly supervisor mode so sidecar topology keeps sandbox child hardening without privileged process setup.

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* refactor(kubernetes): replace sidecar snapshots with control socket

Coordinate sidecar policy and provider bootstrap over a local Unix socket so the process leaf no longer reads policy/provider snapshot files.

Report entrypoint startup through the control channel and keep gateway credentials confined to the network sidecar.

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* feat(kubernetes): support relaxed sidecar network identity

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(sandbox): satisfy sidecar clippy lint

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* refactor(kubernetes): standardize topology naming

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(sandbox): satisfy linux clippy timeout import

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): support kata sidecar on ipv4 pods

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): satisfy linux clippy for sidecar fallback

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* chore(kubernetes): remove stale supervisor topology references

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): enable sidecar binary policy inspection

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): harden sidecar control boundary

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

* fix(kubernetes): couple sidecar supervisor lifecycles

Signed-off-by: Taylor Mutch <taylormutch@gmail.com>

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Signed-off-by: Taylor Mutch <taylormutch@gmail.com>
Signed-off-by: Seth Jennings <sjenning@redhat.com>
Co-authored-by: Seth Jennings <sjenning@redhat.com>
2026-07-10 13:01:39 -07:00
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