Drops banned source IPs in-kernel via nftables (hooks input+forward, so DNAT'd
LoadBalancer traffic is caught before reaching Traefik) for DIRECT hosts — the
direct-side replacement for the dead Traefik plugin, zero per-request hop.
No published image exists, so an initContainer fetches the pinned official
static binary (v0.0.34) onto a stock debian-slim base (nftables backend uses
netlink directly, no nft CLI needed). hostNetwork + NET_ADMIN/NET_RAW (not
privileged). Config (with api_key) in a Secret, Reloader-annotated. crowdsec ns
is already in the Kyverno wave-1 exclude list, so the privileged/hostNetwork pod
is admitted. Pinned to k8s-node2 (runs a Traefik pod) for one-node validation
before the nodeSelector is removed to roll cluster-wide. Fail-open by element
timeout if the bouncer stops.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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