Tiup playground use root user check tidb status may cause problem.

[Defined2014]

Bug Report

see details from pingcap/tidb#44895, and the root cause is

tiup/components/playground/main.go

Lines 401 to 418 in c2ae2f6

	func checkDB(dbAddr string, timeout int) bool {
	dsn := fmt.Sprintf("root:@tcp(%s)/", dbAddr)
	if timeout > 0 {
	for i := 0; i < timeout; i++ {
	if tryConnect(dsn) == nil {
	return true
	}
	time.Sleep(time.Second)
	}
	return false
	}
	for {
	if err := tryConnect(dsn); err == nil {
	return true
	}
	time.Sleep(time.Second)
	}
	}

4. What version of TiUP are you using (tiup --version)?

➜  tidb-x git:(master) tiup playground --version
Starting component `playground`: /Users/jasonmo/.tiup/components/playground/v1.12.3/tiup-playground --version
tiup version 1.12.3 tiup
Go Version: go1.19.9
Git Ref: v1.12.3
GitHash: b8381cfd8180bdf5a3b7924d0249538ac15dee81

[shawn0915]

same root cause as https://asktug.com/t/topic/1010718/31?u=shawnyan

[kennedy8312]

tiup playground --tag failed to restart after changing root passwd during the initial start.