Operations and Maintenance
This chapter mainly introduces how to plan, deploy, maintain, and monitor the TDengine cluster.
📄️ TDengine Components
In the TDengine installation package, in addition to the TDengine database engine taosd, several additional components are provided to facilitate user experience. taosAdapter serves as a bridge between applications and TDengine; taosKeeper is a tool for exporting TDengine monitoring metrics; taosX is a data pipeline tool; taosExplorer is a graphical management tool; taosc is the TDengine client driver. The diagram below shows the topology of the entire TDengine product ecosystem (components taosX, taosX Agent are only available in TDengine Enterprise).
📄️ System Requirements
If you plan to use TDengine to build a time-series data platform, it is necessary to make detailed plans for computing resources, storage resources, and network resources in advance to ensure they meet the needs of your business scenarios. Typically, TDengine runs multiple processes, including taosd, taosadapter, taoskeeper, taos-explorer, and taosx.
📄️ Deploying Your Cluster
Since TDengine was designed with a distributed architecture from the beginning, it has powerful horizontal scaling capabilities to meet the growing data processing needs. Therefore, TDengine supports clustering and has open-sourced this core functionality. Users can choose from four deployment methods according to their actual environment and needs—manual deployment, Docker deployment, Kubernetes deployment, and Helm deployment.
📄️ Maintaining Your Cluster
This section introduces advanced cluster maintenance methods provided in TDengine Enterprise, which can make the TDengine cluster run more robustly and efficiently over the long term.
📄️ Monitoring Your Cluster
To ensure stable operation of the cluster, TDengine integrates various monitoring metrics collection mechanisms and summarizes them through taosKeeper. taosKeeper is responsible for receiving these data and writing them into a separate TDengine instance, which can remain independent of the monitored TDengine cluster. The two core components of TDengine, taosd (database engine) and taosX (data access platform), both implement runtime monitoring through the same monitoring architecture, but their monitoring metrics are designed differently.
📄️ Data Backup and Restoration
To prevent data loss and accidental deletions, TDengine provides comprehensive features such as data backup, restoration, fault tolerance, and real-time synchronization of remote data to ensure the security of data storage. This section briefly explains the backup and restoration functions.
📄️ Fault Tolerance and Disaster Recovery
To prevent data loss and accidental deletion, TDengine provides comprehensive data backup, recovery, fault tolerance, and real-time data synchronization across different locations to ensure the security of data storage. This section briefly explains fault tolerance and disaster recovery in TDengine.
📄️ Advanced Storage Options
This section introduces the multi-tier storage feature unique to TDengine Enterprise, which stores recent, frequently accessed data on high-speed media and old, infrequently accessed data on low-cost media, achieving the following objectives:
📄️ Users and Permissions
TDengine is configured by default with only one root user, who has the highest permissions. TDengine supports access control for system resources, databases, tables, views, and topics. The root user can set different access permissions for each user for different resources. This section introduces user and permission management in TDengine. User and permission management is a feature unique to TDengine Enterprise.
📄️ Advanced Security Options
In addition to traditional user and permission management, TDengine also offers other security strategies such as IP whitelisting, audit logs, data encryption, etc., which are unique features of TDengine Enterprise. The whitelisting feature was first released in version 3.2.0.0, audit logs in version 3.1.1.0, and database encryption in version 3.3.0.0. It is recommended to use the latest version.
📄️ Active-Active Deployment
This feature is available only in TDengine Enterprise 3.3.0.0 and later.
