- TiKV 打标签：各节点配置
server.labels.disk=ssd/hdd，滚动重启生效 - PD 注册标签层级：
pd-ctl config set replication.location-labels '["zone","rack","host","disk"]' - Placement Rules 控副本（
server.labels.disk=ssd/hdd，滚动重启生效pd-ctl config set replication.location-labels '["zone","rack","host","disk"]'