TiDB Binlog Deployment Topology
This document describes the deployment topology of TiDB Binlog based on the minimal TiDB topology. TiDB Binlog provides near real-time backup and replication.
Topology information
| Instance | Count | Physical machine configuration | IP | Configuration |
|---|---|---|---|---|
| TiDB | 3 | 16 VCore 32 GB | 10.0.1.1 10.0.1.2 10.0.1.3 | Default port configuration; Enable enable_binlog; Enable ignore-error |
| PD | 3 | 4 VCore 8 GB | 10.0.1.4 10.0.1.5 10.0.1.6 | Default port configuration |
| TiKV | 3 | 16 VCore 32 GB | 10.0.1.7 10.0.1.8 10.0.1.9 | Default port configuration |
| Pump | 3 | 8 VCore 16GB | 10.0.1.1 10.0.1.7 10.0.1.8 | Default port configuration; Set GC time to 7 days |
| Drainer | 1 | 8 VCore 16GB | 10.0.1.12 | Default port configuration; Set the default initialization commitTS -1 as the latest timestamp; Configure the downstream target TiDB as 10.0.1.12:4000 |
Topology templates
- The simple template for the TiDB Binlog topology (with
mysqlas the downstream type) - The simple template for the TiDB Binlog topology (with
fileas the downstream type) - The complex template for the TiDB Binlog topology
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
The key parameters in the topology configuration templates are as follows:
server_configs.tidb.binlog.enable: true- Enables the binlog service.
- Default value:
false.
server_configs.tidb.binlog.ignore-error: true- It is recommended to enable this configuration in high availability scenarios.
- If set to
true, when an error occurs, TiDB stops writing data into binlog, and adds1to the value of thetidb_server_critical_error_totalmonitoring metric. - If set to
false, when TiDB fails to write data into binlog, the whole TiDB service is stopped.
drainer_servers.config.syncer.db-typeThe downstream type of TiDB Binlog. Currently,
mysql,tidb,kafka, andfileare supported.drainer_servers.config.syncer.toThe downstream configuration of TiDB Binlog. Depending on different
db-types, you can use this configuration item to configure the connection parameters of the downstream database, the connection parameters of Kafka, and the file save path. For details, refer to TiDB Binlog Configuration File.