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54 lines
1.3 KiB
Bash
Executable File
54 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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if [ -z "$1" ]; then
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echo "Usage: $0 <volume-name-regex> [backup-directory]"
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exit 1
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fi
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REGEX="$1"
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BACKUP_DIR="${2:-./volumes}"
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DATE_SUFFIX=$(date +"%Y-%m-%d")
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mkdir -p "$BACKUP_DIR"
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VOLUMES=$(docker volume ls --format '{{.Name}}' | grep -E "$REGEX")
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if [ -z "$VOLUMES" ]; then
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echo "No volumes matched regex: $REGEX"
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exit 0
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fi
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echo "The following volumes will be backed up:"
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echo "$VOLUMES"
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echo
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echo "$VOLUMES" | while read -r VOLUME; do
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echo "Backing up volume: $VOLUME"
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EXPORT_PATH="${BACKUP_DIR}/${VOLUME}_${DATE_SUFFIX}.tar.gz"
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ABS_BACKUP_DIR=$(realpath "$BACKUP_DIR")
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# Generate unique container name to avoid conflicts
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CONTAINER_NAME="backup_$(date +%s)_$$"
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# Run backup with explicit container name and cleanup
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if docker run --rm \
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--name "$CONTAINER_NAME" \
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-u "$(id -u):$(id -g)" \
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-v "$VOLUME":/data:ro \
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-v "$ABS_BACKUP_DIR":/backup \
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alpine \
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sh -c "tar czf /backup/$(basename "$EXPORT_PATH") -C /data ."; then
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echo "Backup complete: $EXPORT_PATH"
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else
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echo "ERROR: Backup failed for volume: $VOLUME"
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# Force cleanup if container still exists
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docker rm -f "$CONTAINER_NAME" 2>/dev/null || true
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exit 1
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fi
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done
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echo
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echo "All matching volumes have been backed up to $BACKUP_DIR"
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