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dev-cluster: document accepted dev-only security tradeoffs #1

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Merged
krlex merged 1 commit into from
Jul 16, 2026
Merged

dev-cluster: document accepted dev-only security tradeoffs #1

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5 changes: 5 additions & 0 deletions Vagrantfile
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Expand Up @@ -25,6 +25,11 @@
# vagrant destroy -f

# Pre-shared token for all k3s nodes. Dev-only — do not reuse for prod.
# needtofix L19/L20 (accepted, dev-only): this is a local throwaway Vagrant
# cluster on a private host-only network. The hardcoded join token, the
# world-readable kubeconfig (0644, so the host can read the synced admin.conf),
# and the unpinned curl|sh k3s install are deliberate dev conveniences. NEVER
# expose this cluster or reuse these values outside local development.
K3S_TOKEN = "forail-dev-cluster-shared-token-do-not-reuse"
K3S_VERSION = "v1.30.4+k3s1"
INIT_SERVER_IP = "192.168.56.30"
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3 changes: 3 additions & 0 deletions scripts/server-init.sh
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Expand Up @@ -54,6 +54,9 @@ done

# Publish kubeconfig with the right server URL (default is 127.0.0.1)
# so the host can use it directly via $KUBECONFIG=shared/admin.conf.
# needtofix L19 (accepted, dev-only): 0644 is required so the host user can
# read the Vagrant-synced admin.conf. This grants cluster-admin to anyone with
# the file — fine for a local throwaway cluster only.
sed "s|server: https://127.0.0.1:6443|server: https://${NODE_IP}:6443|" \
/etc/rancher/k3s/k3s.yaml > "$SHARED_DIR/admin.conf"
chmod 644 "$SHARED_DIR/admin.conf"
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