oliver
80 lines
1.9 KiB
Bash
Executable File
80 lines
1.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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REPO="/backup/borgrepo"
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MOUNT_BASE="/tmp/borg-sshfs"
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export BORG_PASSPHRASE
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BORG_PASSPHRASE="$(cat /app/host_vars/repokey)"
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HOSTS_FILE="$(dirname "$0")/host_vars/hosts"
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TIMESTAMP="$(date +%Y-%m-%dT%H%M%S)"
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HOSTS=()
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while read -r host; do
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[[ -z "$host" || "$host" =~ ^# ]] && continue
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HOSTS+=("$host")
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done < "$HOSTS_FILE"
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echo "Backing up hosts:"
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printf ' - %s\n' "${HOSTS[@]}"
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FAILED_HOSTS=()
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for HOST in "${HOSTS[@]}"; do
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ARCHIVE="${HOST}-backup-${TIMESTAMP}"
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MOUNT_DIR="${MOUNT_BASE}/${HOST}"
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echo "--- Backing up $HOST ---"
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mkdir -p "$MOUNT_DIR"
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# Pull mode: mount client's /BACKUP locally via SSHFS
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if ! sshfs "${HOST}:/BACKUP" "$MOUNT_DIR" \
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-o BatchMode=yes,reconnect,follow_symlinks,ServerAliveInterval=15,ServerAliveCountMax=3; then
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echo "WARNING: Failed to mount $HOST:/BACKUP via SSHFS"
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FAILED_HOSTS+=("$HOST")
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rmdir "$MOUNT_DIR"
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continue
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fi
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# SSHFS (FUSE/SFTP) does not guarantee stable inode numbers,
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# so instruct borg to use ctime+size for file change detection instead.
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if ! borg create \
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"$REPO::$ARCHIVE" \
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"$MOUNT_DIR" \
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--pattern "+ sh:**/current*" \
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--pattern "- *" \
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--files-cache ctime,size \
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--stats \
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--compression lz4; then
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echo "WARNING: Failed to back up $HOST"
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FAILED_HOSTS+=("$HOST")
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fi
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# Unmount and clean up regardless of borg exit status
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umount "$MOUNT_DIR"
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rmdir "$MOUNT_DIR"
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done
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rmdir "$MOUNT_BASE" 2>/dev/null || true
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echo "Applying retention policy..."
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for HOST in "${HOSTS[@]}"; do
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borg prune \
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"$REPO" \
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--keep-daily=7 \
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--keep-weekly=8 \
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--glob-archives "${HOST}-backup-*" \
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--stats
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done
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if [[ ${#FAILED_HOSTS[@]} -gt 0 ]]; then
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echo "DONE WITH ERRORS:"
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printf ' - %s\n' "${FAILED_HOSTS[@]}"
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exit 1
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fi
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echo "Done: all hosts backed up at $TIMESTAMP"
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