modified subpath configmap mount fails when container restarts

k8s 1.20 以下版本使用subpath会出现此问题

References

• modified subpath configmap mount fails when container restarts
• 【故障公告】K8s CofigMap 挂载问题引发网站故障
• docker run –mount creates a directory owned by root if directory is removed at a wrong time
• OCI runtime create failed: container_linux.go:349: starting container process caused “process_linux.go:449
• modified subpath configmap mount fails when container restarts
• Modified subpath configmap mount fails when container restarts