Simulating the system time offset

Introduction

An experiment that simulates the system time offset will be performed after specifying the offset.

CLI Command

• blade create time travel -h

Parameter

Name	Introduction	Type	Required	Example Value
offset	The length of time offset.	string	N	-2h3m50s
disableNtp	Disable synchronizing time automatically. Default value is ture.	string	N	true
timeout	Running time(s).	int	N	20

Case

# Move the system time forward by 5 minutes and 30 seconds.
blade create time travel --offset 5m30s
{"code":200,"success":true,"result":"d8a016b96380d7f3"}

Principle

Create the time offset：

• Set the target time by the date -s command；
• Disable synchronizing time automatically by the timedatectl set-ntp false command.

Destroy the time offset：

• Enable synchronizing time automatically by the timedatectl set-ntp true command
• Copy hardware time to system time by the hwclock --hctosys command.

Q&A

Q: {"code":47000,"success":false,"error":"invalid offset parameter value: 100. time: missing unit in duration 100"}

A：Execution failed because the offset parameter without unit was invalid.