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CnosDB
What it is
CnosDB is an open-source distributed time-series database designed for workloads in areas such as IoT, industrial internet, connected vehicles, and IT operations. It supports standard SQL, time-based aggregation queries, and schemaless writes, including out-of-order data and historical replenishment. Deployment options include standalone, distributed, and storage-compute separated modes across public, private, or hybrid clouds. The documentation describes horizontal scaling for storage and stateless compute nodes. Integrations include Grafana, Prometheus, Telegraf, JDBC, and a Python SDK. Data import and export supports PARQUET, CSV, and JSON with AWS S3, Google Cloud Storage, and Azure Blob Storage. Documented ingestion methods include SQL, Line Protocol, OpenTSDB, Elasticsearch bulk, Loki, NDJSON, and OpenTelemetry. The Community Edition is free under the AGPL-3.0 license. The documentation marks cluster management, tiered storage, subscriptions, and alarm management as Enterprise Edition features; the enterprise package is available by contacting CnosDB. Installation guidance includes Docker and apt instructions for Ubuntu and Debian.
For and against
For
- Supports standard SQL and time-based aggregation queries.
- Accepts out-of-order writes and historical data replenishment.
- Documents standalone, distributed, and separated storage-compute deployments.
- Integrates with Grafana, Prometheus, Telegraf, JDBC, and Python.
- Community Edition is free under AGPL-3.0.
Against
- Cluster management is an Enterprise Edition feature.
- Tiered storage is an Enterprise Edition feature.
- Subscriptions and alarm management are Enterprise Edition features.
- Enterprise package is available by contacting CnosDB.
The verdict
CnosDB combines SQL querying, varied ingestion methods, and deployment choices for time-series data. The free Community Edition is distinct from Enterprise features such as tiered storage and cluster management.
Who it suits
CnosDB may suit teams collecting and querying time-oriented data for the listed IoT, industrial, vehicle, or IT operations uses. Its deployment and ingestion options support a range of cloud arrangements and data sources.
Plans and prices
Community Edition
Community edition; AGPL-3.0 open-source protocol
Read 9 Oct 2026 · cnosdb.com
Enterprise Edition
Enterprise features include tiered storage, subscriptions, node management, alarm management, and data distribution policies
Read 9 Oct 2026 · docs.cnosdb.com
On the record
- API
- The REST API documents endpoints for writing data and executing SQL requests.docs.cnosdb.com · read 9 Oct 2026
- Architecture
- CnosDB supports standalone and distributed deployment, including storage-compute separation and integration.docs.cnosdb.com · read 9 Oct 2026
- Cloud storage
- Import and export support PARQUET, CSV, and JSON with AWS S3, Google Cloud Storage, and Azure Blob Storage.docs.cnosdb.com · read 9 Oct 2026
- Deployment
- The installation guide provides a Docker command for running the community image.docs.cnosdb.com · read 9 Oct 2026
- Enterprise limits
- The documentation marks cluster management, tiered storage, subscriptions, and alarm management as Enterprise Edition features.docs.cnosdb.com · read 9 Oct 2026
- Enterprise trial
- The Enterprise page invites readers to contact CnosDB to try enterprise features.docs.cnosdb.com · read 9 Oct 2026
- Installation
- The installation guide shows Docker installation and directs Ubuntu and Debian users to install through apt; it says to contact CnosDB for the Enterprise package.docs.cnosdb.com · read 9 Oct 2026
- Integrations
- The ecosystem integration page lists LangChain, Grafana, Jaeger, Kafka, Prometheus, Telegraf, TensorFlow, and Vector.docs.cnosdb.com · read 9 Oct 2026
- License
- The official site says the standalone, distributed, and ecosystem tools use the AGPL-3.0 open-source license.cnosdb.com · read 9 Oct 2026
- Linux packages
- The Ubuntu and Debian guide provides apt repository and package installation instructions for CnosDB.docs.cnosdb.com · read 9 Oct 2026
- Permissions
- CnosDB documents multi-tenancy and role-based permission allocation.docs.cnosdb.com · read 9 Oct 2026
- Product
- CnosDB is an open-source distributed time-series database designed for high performance, compression, and ease of use.docs.cnosdb.com · read 9 Oct 2026
- Python connector
- The open-source cnos-connector supports Python and provides a PEP 249 interface for use with SQLAlchemy and pandas.docs.cnosdb.com · read 9 Oct 2026
- Querying
- CnosDB supports standard SQL and time-based aggregation queries.docs.cnosdb.com · read 9 Oct 2026
- Scaling
- The architecture page says compute and storage nodes can scale capacity independently.docs.cnosdb.com · read 9 Oct 2026
- Security
- The configuration documentation provides optional TLS certificate and private key settings.docs.cnosdb.com · read 9 Oct 2026
- Use cases
- The stated application areas include IoT, industrial internet, connected vehicles, and IT operations.docs.cnosdb.com · read 9 Oct 2026
- Writing data
- It supports schemaless writes and historical data replenishment, including out-of-order writes.docs.cnosdb.com · read 9 Oct 2026
