# 2022-02-11-19:20:55+0800 Alter configuration of TiFlash via TiUP command

- Cause: https://jira.tidbcloud.com/browse/TCOC-260
- Operation:

```bash
kubectl ctx garden-prod-1eaf9754-aws-us-west-2-1372813089190221285
kubectl exec --stdin --tty -n tidb1379661944595614073 db-pd-0 -- /bin/sh

# in the tty shell
apk add curl
curl --proto '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/install.sh | sh

/root/.tiup/bin/tiup ctl:v5.3.0 pd \
  -u https://127.0.0.1:2379 \
  --cacert="/var/lib/pd-tls/ca.crt" \
  --cert="/var/lib/pd-tls/tls.crt" \
  --key="/var/lib/pd-tls/tls.key" \
  store limit all tiflash engine 60
```
Output:

```bash
# Starting component `ctl`: /root/.tiup/components/ctl/v5.3.0/ctl /root/.tiup/components/ctl/v5.3.0/ctl pd -u https://127.0.0.1:2379 --cacert=/var/lib/pd-tls/ca.crt --cert=/var/lib/pd-tls/tls.crt --key=/var/lib/pd-tls/tls.key store limit all tiflash engine 60
# Success!
```


- Impact: TiFlash configuration has been adjusted, which will supposely reduce the storage usage of TiFlash during the import. 
- Recovery operation: N/A
- Time window: 
    2022-02-11-19:32:52+0800 to 2022-02-11-19:44:52+0800