# 2021-03-12-16:03:32+0800 alter configuration of cluster 1369878215350292480

- Cause: customer [requested this change](https://pingcap.zendesk.com/agent/tickets/141)
- Operations:

```bash
# take a backup of current tc
kubectl get tc -n $NS -o yaml > tc_backup.yaml
# edit target tidbcluster resource, find `.spec.tidb.config` and set `alter-primary-key` in config to `false`
kubectl edit tc -n $NS
# wait the upgrade complete
kubectl get po -n $NS --watch
```

- Impact: The tidb-servers will be rolling-restarted and use the new configuration
- Recovery Operation: apply the `tc_backup.yaml` back to the cluster
- Time window: Mar 11, 15:40 ~ 15:50 CST