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TiFlash Deployment Topology
Learn the deployment topology of TiFlash based on the minimal TiDB topology.
/docs/dev/tiflash-deployment-topology/

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 10.0.1.1
10.0.1.2
10.0.1.3		 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 10.0.1.10 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

Key parameters

  • To enable the Placement Rules feature of PD, set the value of replication.enable-placement-rules in the configuration template to true.
  • The instance level "-host" configuration in tiflash_servers only supports IP, not domain name.
  • For detailed TiFlash parameter description, see TiFlash Configuration.

Note:

  • You do not need to manually create the tidb user in the configuration file. The TiUP cluster component automatically creates the tidb user on the target machines. You can customize the user, or keep the user consistent with the control machine.
  • If you configure the deployment directory as a relative path, the cluster will be deployed in the home directory of the user.