Time Travel

Warning:
This action may cause unwanted side effects. Use with caution. E.g. Other software might have hiccups when system time changes, vital access tokens might expire, etc.

Use Cases

Change the time of a host to a specific time.
Test your application's ability to handle time changes, like summer winter / time changes.
Check for certificate expiration.

Parameters

Parameter	Description	Default
Duration	How long should the clock be modified	30s
Offset	The offset that will be added to the current time.	1s
Disable NTP	Prevent NTP from correcting time during attack.	true

Useful Templates

See all

Certificate TLS/SSL expiry

Turn time forward and check whether your TLS/SSL certificates are valid.

Motivation

Noticing the TLS/SSL certification expiry too late is one problem you can easily avoid by frequently checking your expiry dates. While observability tools already handle this job nicely, you can't know whether they are working in your environment. With this experiment, you can turn the time forward to check whether your HTTPS endpoint works at a given date in the future. Additionally, you can configure one of the observability integrations to validate your observability tool's alerting.

Structure

First, we validate that the given HTTPS endpoint is working today. Next, we will travel with the host in time to validate that the HTTPS endpoint continues to work on a given date. If the TLS/SSL certificate has already expired at that date, the HTTP check will throw failures.

Warning

Please be aware that we will manipulate the time for a given host. Applications running at that host may struggle to deal with the change in the clock correctly, and you may experience other side effects.

Certificate Expiry

Hosts

Certificate TLS/SSL expiry for Kubernetes deployment

Turn time forward and check whether your TLS/SSL certificates are valid.

Motivation

Structure

Warning

Please be aware that we will manipulate the time for a given Kubernetes node. Containers running at that host may struggle to deal with the change in the clock correctly, and you may experience other side effects.