# [Known Issues] 查询 TIKV_REGION_STATUS 报错 connection refused

## Key Words

connection refused, tikv_region_status

## Description

查询 INFORMATION_SCHEMA.TIKV_REGION_STATUS 遇到报错

```sql
ERROR 1105 (HY000): Get "http://172.xx.xx.162:18279/pd/api/v1/regions": dial tcp 172.xx.xx.162:18279: connect: connection refused
```

## Root Cause

当某台 PD 宕机时, 由于没有重试其他 PD 节点的机制, 导致查询表 INFORMATION_SCHEMA.TIKV_REGION_STATUS 时请求失败  
记录 [Issue 35708](https://github.com/pingcap/tidb/issues/35708)

## Diagnostic Steps

1.查看 tikv_region_status 表时遇到报错信息 connection refused  
2.查看对应的 PD 节点状态为 Down

## Resolution

升级到 v6.1.2 及以上版本修复问题

## Workaround

1.恢复异常 PD 节点为 UP 状态  
2.删除异常 PD 节点  
参考 [PD control](https://docs.pingcap.com/zh/tidb/stable/pd-control#pd-control-使用说明), 使用 member 命令查看 down 状态节点的 member id 或者 member name 信息, 再使用
member delete id xx 或者 member delete name xxx 命令清理 down 状态的 member 信息

```sql
member 

member delete name pd2

member delete id 1319539429105371180
```

## Affected Versions

<= v6.1.1