crdb-dump

crdb-dump

A feature-rich CLI for exporting and importing CockroachDB schemas and data. Includes support for parallel chunked exports, manifest checksums, BYTES/UUID/ARRAY types, permission introspection, secure resumable imports, S3-compatible storage (MinIO, Cohesity), region-aware filtering, and automatic retry logic.

🚀 Features

• ✅ Schema export: tables, views, sequences, enums
• ✅ Data export: CSV or SQL with chunking, gzip, and ordering
• ✅ Types: handles BYTES, UUIDs, STRING[], TIMESTAMP, enums
• ✅ Schema output formats: sql, json, yaml
• ✅ Resumable COPY-based imports with chunk-level tracking
• ✅ Permission exports: roles, grants, role memberships
• ✅ Parallel loading (--parallel-load) and manifest verification
• ✅ Dry-run for schema or chunk loading
• ✅ TLS and insecure auth supported
• ✅ Schema diff support (--diff)
• ✅ Full logging via logs/crdb_dump.log
• ✅ Automatic retry logic with exponential backoff for transient failures
• ✅ Fault-tolerant, resumable imports with --resume-log or --resume-log-dir
• ✅ Region-aware export/import via --region
• ✅ S3-compatible support (--use-s3) with MinIO, Cohesity, or AWS
• ✅ CSV header validation (--validate-csv)
• ✅ Python-based S3 bucket creation (via boto3) for MinIO

📦 Installation

pip install crdb-dump

🧪 Local Testing

./test-local.sh

This script will:

• Start a multi-region demo CockroachDB cluster
• Create test schema + data
• Export schema and chunked data (CSV)
• Verify chunk checksums
• Dry-run and real import with retry/resume
• Upload chunks to MinIO (S3-compatible)
• Download and verify import from S3
• Use Python (boto3) to create S3 buckets

🔧 CLI Overview

crdb-dump --help
crdb-dump export --help
crdb-dump load --help

Example usage:

crdb-dump export --db=mydb --data --per-table
crdb-dump load --db=mydb --schema=... --data-dir=... --resume-log=resume.json

🔐 Connection

export CRDB_URL="cockroachdb://root@localhost:26257/defaultdb?sslmode=disable"
# or
export CRDB_URL="postgresql://root@localhost:26257/defaultdb?sslmode=disable"

Alternatively:

--db mydb --host localhost --certs-dir ~/certs

Use --print-connection to verify resolved URL.

🏗 Export Options

crdb-dump export \
  --db=mydb \
  --per-table \
  --data \
  --data-format=csv \
  --chunk-size=1000 \
  --data-order=id \
  --data-compress \
  --data-parallel \
  --verify \
  --include-permissions \
  --archive

Schema Output

Option	Description
--per-table	One file per object (e.g., table_users.sql)
--format	Output format: sql, json, yaml
--diff	Show schema diff vs previous .sql file
--tables	Comma-separated FQ names to include
--exclude-tables	Skip specific FQ table names
--include-permissions	Export roles, grants, and memberships
--region	Only export tables matching this region

Data Export

Option	Description
--data	Enable data export
--data-format	Format: csv or sql
--chunk-size	Number of rows per chunk
--data-split	Output one file per table
--data-compress	Output .csv.gz
--data-order	Order rows by column(s)
--data-order-desc	Use descending order
--data-parallel	Parallel export across tables
--verify	Verify chunk checksums
--region	Filter tables by region in manifests
--use-s3	Upload exported chunks to S3
--s3-bucket	S3 bucket name
--s3-prefix	Key prefix under which to store chunks
--s3-endpoint	S3-compatible endpoint URL
--s3-access-key	S3 access key (can use env)
--s3-secret-key	S3 secret key (can use env)

⛓ Import Options

crdb-dump load \
  --db=mydb \
  --schema=crdb_dump_output/mydb/mydb_schema.sql \
  --data-dir=crdb_dump_output/mydb \
  --resume-log=resume.json \
  --validate-csv \
  --parallel-load \
  --print-connection

Option	Description
--schema	.sql file to apply
--data-dir	Folder containing chunked CSV + manifests
--resume-log	Track loaded chunks in a single JSON file
--resume-log-dir	Per-table resume logs (e.g. resume/users.json)
--validate-csv	Ensure chunk headers match DB schema
--parallel-load	Load chunks in parallel
--region	Only import chunks from matching region
--dry-run	Print actions but don't execute
--use-s3	Download chunks from S3
--s3-bucket	S3 bucket name
--s3-prefix	Path prefix inside the bucket
--s3-endpoint	S3-compatible endpoint (MinIO, Cohesity)
--s3-access-key	S3 access key
--s3-secret-key	S3 secret key

🔄 Fault Tolerance & Resume Support

• ✅ Retries failed operations with exponential backoff

• ✅ Resumable imports:

  • --resume-log (single file)
  • --resume-log-dir (per-table)
  • --resume-strict (abort on failure)

Writes resume state after each successful chunk. Restarts are safe and idempotent.

☁️ S3 / MinIO / Cohesity Example

crdb-dump export \
  --db=mydb \
  --per-table \
  --data \
  --chunk-size=1000 \
  --data-format=csv \
  --use-s3 \
  --s3-bucket=crdb-test-bucket \
  --s3-endpoint=http://localhost:9000 \
  --s3-access-key=minioadmin \
  --s3-secret-key=minioadmin \
  --s3-prefix=test1/ \
  --out-dir=crdb_dump_output

crdb-dump load \
  --db=mydb \
  --data-dir=crdb_dump_output/mydb \
  --resume-log-dir=resume/ \
  --parallel-load \
  --validate-csv \
  --use-s3 \
  --s3-bucket=crdb-test-bucket \
  --s3-endpoint=http://localhost:9000 \
  --s3-access-key=minioadmin \
  --s3-secret-key=minioadmin \
  --s3-prefix=test1/

🔍 Schema Diff Example

crdb-dump export --db=mydb --diff=old_schema.sql

Output:

crdb_dump_output/mydb/mydb_schema.diff

🧪 Testing

pytest -m unit
pytest -m integration
./test-local.sh

❤️ Contributing

Pull requests welcome! Star ⭐ the repo, file issues, or request features at:

👉 https://github.com/viragtripathi/crdb-dump/issues