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fix: rewrite backup script — extract via Docker, rsync from host

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Avoids SSH-inside-container complexity. Docker cp to /tmp,
native rsync to NAS, Docker cleanup for root-owned files.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Stephan Kerkman 2026-05-31 13:36:39 +02:00
parent 42e81c3609
commit d573dfbbda
1 changed files with 21 additions and 12 deletions
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33
scripts/backup_to_nas.sh
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@ -3,21 +3,30 @@
# Cron: 0 3 * * * /home/stephan/stacks/plantdb/scripts/backup_to_nas.sh >> /var/log/plantdb_backup.log 2>&1 # Cron: 0 3 * * * /home/stephan/stacks/plantdb/scripts/backup_to_nas.sh >> /var/log/plantdb_backup.log 2>&1
set -euo pipefail set -euo pipefail
NAS_USER="stephan" NAS_USER="admin"
NAS_HOST="192.168.178.110" NAS_HOST="nas"
NAS_PATH="/share/MD0_DATA/Public/plantdb_backup" NAS_PATH="/share/MD0_DATA/Public/plantdb_backup"
SSH_KEY="/home/stephan/.ssh/plantdb_backup" SSH_KEY="/home/stephan/.ssh/plantdb_backup"
TMP_DIR="/tmp/plantdb_backup_$$"
cleanup() {
docker run --rm -v "${TMP_DIR}:/dst" alpine sh -c "rm -rf /dst/db /dst/media"
rmdir "${TMP_DIR}"
}
trap cleanup EXIT
mkdir -p "${TMP_DIR}/db" "${TMP_DIR}/media"
# Extract volume data to tmp dir
docker run --rm \ docker run --rm \
-v plantdb_db:/data/db:ro \ -v plantdb_db:/src/db:ro \
-v plantdb_media:/data/media:ro \ -v plantdb_media:/src/media:ro \
-v "${SSH_KEY}:/root/.ssh/id_ed25519:ro" \ -v "${TMP_DIR}:/dst" \
alpine sh -c " alpine sh -c "cp -a /src/db/. /dst/db/ && cp -a /src/media/. /dst/media/"
apk add --no-cache rsync openssh-client -q 2>/dev/null
mkdir -p /root/.ssh # Sync to NAS
ssh-keyscan -H ${NAS_HOST} > /root/.ssh/known_hosts 2>/dev/null rsync -av --delete \
rsync -av --delete /data/db/ ${NAS_USER}@${NAS_HOST}:${NAS_PATH}/db/ -e "ssh -i ${SSH_KEY} -o StrictHostKeyChecking=no" \
rsync -av --delete /data/media/ ${NAS_USER}@${NAS_HOST}:${NAS_PATH}/media/ "${TMP_DIR}/" "${NAS_USER}@${NAS_HOST}:${NAS_PATH}/"
"
echo "[$(date '+%Y-%m-%d %H:%M:%S')] plantdb backup complete" echo "[$(date '+%Y-%m-%d %H:%M:%S')] plantdb backup complete"