TiFlash Deployment Topology
This document describes the deployment topology of TiFlash based on the minimal TiDB topology.
TiFlash is a columnar storage engine, and gradually becomes the standard cluster topology. It is suitable for real-time HTAP applications.
Topology information
| Instance | Count | Physical machine configuration | IP | Configuration |
|---|---|---|---|---|
| TiDB | 3 | 16 VCore 32GB * 1 | 10.0.1.7 10.0.1.8 10.0.1.9 | Default port Global directory configuration |
| PD | 3 | 4 VCore 8GB * 1 | 10.0.1.4 10.0.1.5 10.0.1.6 | Default port Global directory configuration |
| TiKV | 3 | 16 VCore 32GB 2TB (nvme ssd) * 1 | 10.0.1.1 10.0.1.2 10.0.1.3 | Default port Global directory configuration |
| TiFlash | 1 | 32 VCore 64 GB 2TB (nvme ssd) * 1 | 10.0.1.11 | Default port Global directory configuration |
| Monitoring & Grafana | 1 | 4 VCore 8GB * 1 500GB (ssd) | 10.0.1.10 | Default port Global directory configuration |
Topology templates
For detailed descriptions of the configuration items in the above TiDB cluster topology file, see Topology Configuration File for Deploying TiDB Using TiUP.
Key parameters
- To enable the Placement Rules feature of PD, set the value of
replication.enable-placement-rulesin the configuration template totrue. - The instance level
"-host"configuration intiflash_serversonly supports IP, not domain name. - For detailed TiFlash parameter description, see TiFlash Configuration.