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openGemini
What it is
openGemini is a free, open-source distributed database for storing and analyzing time-series data, including metrics, logs, and traces. It is intended for monitoring and observability, IoT, and operations analysis. Its MPP design uses ts-sql, ts-meta, and ts-store components, which can scale independently. Column-based storage, compression, automatic partitioning, and LSM-based techniques are part of its storage approach. For analysis, it supports PromQL and offers HTTP APIs for expressions, metadata, and remote reads and writes; InfluxQL and GeminiQL are also listed query languages. Data ingestion options include InfluxDB Line Protocol, Apache Arrow Flight, and Prometheus remote_write. A built-in AI analysis platform provides real-time anomaly detection, and Grafana can optionally be used with Prometheus remote read and write. openGemini supports Linux, macOS, and Windows, as well as Docker and Kubernetes deployment. Authentication is disabled by default and must be enabled in configuration. PromQL compatibility covers 90% of Prometheus functions and operators, with some unsupported. The project is a CNCF sandbox project.
For and against
For
- Stores metrics, logs, and traces.
- Components can scale independently.
- Supports PromQL, InfluxQL, and GeminiQL.
- Offers Docker and Kubernetes deployment.
- Real-time anomaly detection is included.
Against
- Authentication is disabled by default.
- PromQL compatibility is 90%, with unsupported functions and operators.
- Backup requests have an interface, but no CLI backup command.
- macOS and Windows are recommended for development and debugging.
The verdict
openGemini brings multiple ingestion routes, query options, and distributed scaling to time-series workloads. Review its PromQL gaps and enable authentication in configuration when planning a deployment.
Who it suits
openGemini suits teams analyzing time-series data for monitoring, observability, IoT, or operations. It is relevant to users seeking a self-hosted database with distributed scaling and several query and ingestion options.
Plans and prices
openGemini
Open-source time-series database; standalone and distributed versions
Read 9 Oct 2026 · opengemini.org
On the record
- Analysis
- The built-in AI data analysis platform provides real-time anomaly detection for time-series data.docs.opengemini.org · read 9 Oct 2026
- Architecture
- It uses an MPP architecture with ts-sql, ts-meta, and ts-store components, and says components can be scaled independently.docs.opengemini.org · read 9 Oct 2026
- Backup limitation
- The backup and restore guide says backup requests are supported through an interface, but there is no CLI command for backup.docs.opengemini.org · read 9 Oct 2026
- Community
- The project invites users to join its Slack developer community and contribute code.opengemini.org · read 9 Oct 2026
- Community and support
- The project invites users to join its developer community on Slack and contribute alongside enterprises, universities, and developers.opengemini.org · read 9 Oct 2026
- Container deployment
- The project documents Docker deployment and Kubernetes deployment through openGemini-operator.docs.opengemini.org · read 9 Oct 2026
- Deployment
- The installation guide describes Linux, macOS, and Windows support; it recommends macOS and Windows for development and debugging.docs.opengemini.org · read 9 Oct 2026
- HTTPS
- HTTPS can be enabled by configuring a certificate and private key; the documentation includes instructions for using a self-signed certificate.docs.opengemini.org · read 9 Oct 2026
- Notable limitation
- The PromQL compatibility documentation reports that overall support for Prometheus functions and operators is 90%, and lists unsupported functions and operators.docs.opengemini.org · read 9 Oct 2026
- Observability data
- It stores metrics, logs, and traces to simplify their storage and analysis.docs.opengemini.org · read 9 Oct 2026
- Performance and scaling
- It uses automatic partitioning and LSM-based storage techniques, and supports distributed cluster deployment with MPP architecture.docs.opengemini.org · read 9 Oct 2026
- Project affiliation
- The site identifies openGemini as a Cloud Native Computing Foundation sandbox project.opengemini.org · read 9 Oct 2026
- Project status
- The project describes itself as a Cloud Native Computing Foundation sandbox project.opengemini.org · read 9 Oct 2026
- Prometheus integration
- openGemini supports Prometheus remote read and write, and its documentation describes using Grafana optionally with that setup.docs.opengemini.org · read 9 Oct 2026
- Purpose
- openGemini is an open-source, cloud-native distributed time-series database for storing and analyzing large volumes of time-series data.docs.opengemini.org · read 9 Oct 2026
- Query and ingestion compatibility
- The documentation says openGemini supports PromQL and HTTP APIs for expression and metadata queries, remote reads, and remote writes.docs.opengemini.org · read 9 Oct 2026
- Query compatibility
- The project supports PromQL and provides HTTP APIs for expression queries, metadata queries, and remote data reading and writing.docs.opengemini.org · read 9 Oct 2026
- Security
- Username and password authentication is supported but disabled by default in the configuration; HTTPS also requires configuration to enable.docs.opengemini.org · read 9 Oct 2026
