部署 TiDB 集群监控 UCloud 上的镜像不存在

[ysicing]

File: /release-1.3/zh/get-started.md

# typo:
kubectl -n tidb-cluster apply -f https://raw.githubusercontent.com/pingcap/tidb-operator/master/examples/basic-cn/tidb-monitor.yaml

# log 
  Normal   Scheduled  5m5s                  default-scheduler  Successfully assigned tidb-cluster/basic-monitor-0 to kind-worker
  Normal   Pulling    3m33s (x4 over 5m5s)  kubelet            Pulling image "uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1"
  Warning  Failed     3m33s (x4 over 5m5s)  kubelet            Failed to pull image "uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1": rpc error: code = NotFound desc = failed to pull and unpack image "uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1": failed to resolve reference "uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1": uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1: not found
  Warning  Failed     3m33s (x4 over 5m5s)  kubelet            Error: ErrImagePull
  Warning  Failed     3m21s (x6 over 5m5s)  kubelet            Error: ImagePullBackOff
  Normal   BackOff    3m10s (x7 over 5m5s)  kubelet            Back-off pulling image "uhub.service.ucloud.cn/pingcap/tidb-monitor-initializer:v5.4.1"

[ran-huang]

@csuzhangxc PTAL