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root 4dfd512785 Wire up a real main<->VM SSH path for the standby's remote-info feature

The standby's "SSH to main server for containers/stats/system info"
fallback (RUNNING_ON_MAIN_SERVER=False path) was wired in code across
backups.py/users.py/commands.py/app.py but never actually worked:
outbound SSH from the VM is blocked by its own firewall (deliberate
hardening — ufw DENY OUT on 22/tcp and 2222/tcp, left untouched), and
separately the VM's contabo-key was never added to the main server's
authorized_keys in the first place.

Fixed via a persistent reverse tunnel instead of opening the VM's
firewall: main-to-vm-tunnel.service (systemd, auto-restart) runs on the
main server and keeps `ssh -R 2224:localhost:22` open to the VM, so the
VM can reach the main server's SSH via localhost:2224 without ever
needing outbound access itself. Added the standby's public key to the
main server's authorized_keys (chattr +i-locked — unlocked, appended,
re-locked immediately).

config.py (gitignored, not in this commit — edited live on both servers
directly) gets new MAIN_SERVER_SSH_HOST/PORT ("localhost"/"2224"), kept
deliberately separate from the existing MAIN_SERVER_IP (which stays the
real IP and is still used for on-page display in several templates —
overloading it for the tunnel target would have silently changed what's
shown in the UI). All four call sites switched from
MAIN_SERVER_IP/MAIN_SERVER_PORT to the new pair. Also fixed a pre-existing
bug in commands.py's run_command(): its SSH fallback had no -i key at all,
so it could never have authenticated even with the tunnel in place.

Verified end-to-end on the live standby: run_command(), backups.py's and
users.py's _ssh_main() all confirmed to actually execute on the real main
server (hostname/whoami/backup count all matched), not erroring or
silently no-op'ing.

2026-08-21 13:26:07 +02:00

backup

Fix two restore-k8s-apps.sh bugs found verifying Nextcloud restore

2026-08-21 12:37:16 +02:00

docker-compose

Sync from main server - 2026-06-04 18:24:37

2026-08-14 12:20:58 +02:00

k8s

Give management-platform a scoped ServiceAccount for k8s backup/restore

2026-08-20 11:30:03 +02:00

platform

Wire up a real main<->VM SSH path for the standby's remote-info feature