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beatzaplentyandClaude Sonnet 5 274d54a774 Fix LXC container creation: unprivileged, nesting/keyctl, swap sizing
Found and fixed live against a real test container (VMID 100, lxc-nix-cache
on pve.sweet.home) after the previous pct-restore-to-pct-create fix still
produced a container that booted into garbled console output:

1. pct create's own CLI default for --unprivileged is privileged (unlike
   the web UI, whose checkbox defaults the other way), but
   modules/platforms/lxc.nix sets proxmoxLXC.privileged = false, so the
   image assumes it's running unprivileged. Real mismatch -- now passes
   --unprivileged 1 explicitly.

2. The actual root cause of the garbled console: modern (v247+) systemd
   routinely uses nested user namespaces and credential mounts (even
   plain getty units, via LoadCredential=-style mechanisms), which
   AppArmor's default LXC confinement denies without --features
   nesting=1,keyctl=1. Confirmed via the host's kernel audit log: every
   getty unit was crash-looping on a denied /run/credentials/* mount
   every ~3s, and core services like nsncd failed userns_create the same
   way -- the system never finished activating. Fixed live (pct set +
   restart on the running test container) before committing the script
   change: systemctl is-system-running went from never completing to
   "running" with zero failed units.

3. --memory doesn't touch swap -- confirmed live it silently stayed at
   Proxmox's own 512M default with --memory 2048. Now defaults --swap to
   whatever --memory resolves to.

docs/auto-installer.md's manual pct create walkthrough gets the same
fixes, with the "why" for each flag, since a human following it by hand
would hit the identical bugs.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01La55Nsss8jZ7ZuzUV9mfot
2026-07-20 11:33:53 +10:00
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