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Synology DS218plus

Operational notes for accessing and navigating the Synology NAS without rediscovering paths.

Connection

SSH config alias: synology
Hostname/IP: 192.168.86.31
SSH user: jared
SSH key from ~/.ssh/config: ~/.ssh/id_ed25519_git
Verified NAS hostname: DS218plus

Quick check:

ssh synology 'hostname; id'

Expected identity:

DS218plus
uid=1026(jared) gid=100(users) groups=100(users),101(administrators),65536(family)

Volume Paths

Synology shared folders are mounted under /volume1 over SSH.

Important paths:

Purpose	SSH path
Main backup share	`/volume1/backup`
Fedora continuous restic repo	`/volume1/backup/fedora_desktop_backup_continuous`
Older May 2024 user backup	`/volume1/backup/jared_backup052124`
Older May 2024 Fedora backup	`/volume1/backup/fedora_backup052124`
October 2024 Fedora recovery folder	`/volume1/backup/fedora_recovery_oct2024`

List likely backup folders:

ssh synology 'find /volume1/backup -maxdepth 2 -mindepth 1 -type d | sort'

Restic Access

Local restic is installed at /usr/bin/restic. Credentials are sourced from ~/.credentials; do not print the file or password.

The active backup script uses:

source ~/.credentials
restic -r "sftp:${SYNOLOGY_HOST}:${SYNOLOGY_PATH}" snapshots --compact

As of 2026-05-14, ~/.credentials has:

SYNOLOGY_HOST=synology
SYNOLOGY_PATH=/home/Backups/fedora-workstation

Note: that SFTP path is a virtual path for restic/SFTP access. Over an interactive SSH shell, the same repository is visible at:

/volume1/backup/fedora_desktop_backup_continuous

Repository structure confirmed on 2026-05-14:

config
data/
index/
keys/
locks/
snapshots/

Useful Restic Commands

List snapshots:

source ~/.credentials
restic -r "sftp:${SYNOLOGY_HOST}:${SYNOLOGY_PATH}" snapshots --compact

List a path in the latest snapshot:

source ~/.credentials
restic -r "sftp:${SYNOLOGY_HOST}:${SYNOLOGY_PATH}" ls latest /home/jared/.ssh

Search snapshots for specific files:

source ~/.credentials
restic -r "sftp:${SYNOLOGY_HOST}:${SYNOLOGY_PATH}" find /home/jared/.ssh/id_rsa /home/jared/.ssh/id_rsa.pub

Restore a specific file or directory to a temporary location:

source ~/.credentials
mkdir -p /tmp/restic-restore
restic -r "sftp:${SYNOLOGY_HOST}:${SYNOLOGY_PATH}" restore latest \
  --target /tmp/restic-restore \
  --include /home/jared/path/to/file

Snapshot State on 2026-05-14

The Fedora continuous repo is accessible and decrypts successfully. It had 17 snapshots from 2026-04-11 through 2026-05-11.

Latest snapshot observed:

c4ec0c91  2026-05-11 01:58:03  host=fedora  tag=fedora  size=18.779 GiB

SSH Key Recovery Findings

Checked while investigating Hyperthrive VPS access on 2026-05-14:

Latest restic snapshot .ssh contains only config, id_ed25519_git, id_ed25519_git.pub, id_ed25519_ovh_backup, id_ed25519_ovh_backup.pub, known_hosts, and known_hosts.old.
restic find did not find /home/jared/.ssh/id_rsa, /home/jared/.ssh/id_rsa.pub, id_ed25519_forgejo, or id_ed25519_forgejo.pub.
/volume1/backup/jared_backup052124/.ssh exists but is empty.
/volume1/backup/fedora_backup052124/jared/.ssh exists but is empty.
No .ssh files were found under /volume1/backup/fedora_backup052124 or /volume1/backup/fedora_recovery_oct2024 in the checked paths.

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