Deploy-keys now only:
- Creates /var/lib/syncserver/ssh/keys on remote
- Uploads private keys of all other machines to that path
- Populates known_hosts with all other machine hosts
No longer touches authorized_keys or reads server public key.
When deploying keys to a machine, upload ALL private keys from ALL
other machines (not just sync pair peers). Also populate known_hosts
with all other machine hosts. Creates a full mesh where any machine
can SSH to any other.
- sshmanager/deploy.go: change knownHostsHost string parameter to
knownHostsHosts []string for multi-host ssh-keyscan
- handlers_machines.go: replace sync-pair-based key detection with
loop over all machines, deduplicating by local key path
- sshmanager/deploy.go: StdinPipe() must be called BEFORE Start(),
not after. Reordered the calls to fix "ssh: StdinPipe after
process started" error.
- Return DeployResult instead of nil error on SSH dial failure
so the frontend always gets a parseable response.
- Add slog.Debug for key upload, slog.Warn for ssh-keyscan and
authorized_keys failures, slog.Info for final result summary.
- sshmanager/deploy.go: initialize DeployResult with empty slices
instead of nil to prevent null serialization in JSON
- Machines.tsx: use ?? [] fallback for messages and errors arrays
in deploy keys modal to handle null/undefined gracefully
- sshmanager/deploy.go: new DeployKeysToMachine function that uploads
private keys, populates known_hosts via ssh-keyscan, and adds server
pub key to authorized_keys on remote machines
- handlers_machines.go: new DeployKeys handler with auto-detection of
keys needed per sync pair (source->dest uploads dest key, dest->source
uploads source key)
- router.go: POST /machines/{id}/deploy-keys route
- client.ts: deployKeys() API method
- Machines.tsx: Deploy Keys button + modal with result display
Bug: AddKnownHost wrote raw SSH wire-protocol bytes directly to
known_hosts instead of the OpenSSH authorized-key one-line format.
This produced garbage entries that would break SSH verification
for newly added machines.
Fix: ssh.ParsePublicKey(keyData) + ssh.MarshalAuthorizedKey() to
produce canonical hostkey lines: hostname ssh-ed25519 AAAAB3...xn3c=
Bug: raw ed25519.PublicKey bytes were stored directly instead of
OpenSSH authorized-key format (ssh-ed25519 AAAA... label).
Fixes:
- internal/sshmanager/fingerprint.go: GenerateKeyPair now uses
ssh.NewPublicKey + ssh.MarshalAuthorizedKey
- internal/sshmanager/keys.go: EnsureServerKey uses same fix; also
regenerates .pub file from private key if stored value is corrupt
- internal/sshmanager/fingerprint.go: add MarshalED25519PublicKey,
PublicKeyFromPrivateKeyFile, RegeneratePublicKeyFromPrivateKeyFile
- internal/models/sshkey.go: add UpdatePublicKey
- internal/api/handlers_sshkeys.go: List+Get recover existing DB
records with corrupt public keys by regenerating from private key
file and updating the DB
Also adds golang.org/x/crypto/ssh dependency via go mod tidy.
Full-stack Go monolith with embedded React frontend for orchestrating
rsync-over-SSH file synchronization with Wake-on-LAN support.
Features:
- JWT auth (HS256) with bcrypt password hashing
- CRUD for machines (with WoL config) and sync_pairs
- Ed25519 SSH key generation and known_hosts management
- WoL magic packet sender + TCP-connect waiter with backoff
- Sync engine: rsync subprocess, per-pair job queue, progress parsing
- Homebrew cron parser for scheduled syncs
- SSE stream for live job status (queued/waking_up/running/success/failed)
- React+TS+Vite+Tailwind SPA embedded via embed.FS
- Debian packaging with systemd unit, postinst/prerm/postrm
Tech stack:
- Go 1.22+ (CGO_ENABLED=0, pure SQLite via modernc.org/sqlite)
- chi router for HTTP API
- TypeScript + React 18 + Tailwind CSS frontend
- Cross-compiled to Linux amd64 for Proxmox LXC deployment
Tests: wol (MAC parsing, magic packet), syncengine/queue, scheduler/cron
darroyo