Cannot run useradd command in a container created by nerdctl+kata.

[zibinpan]

Description

I cannot run the command useradd in my host, as seen below:

For the purpose of learning, I want to create new user in my server. Hence, I use nerdctl + kata container to create a container in rootfull mode. However, in this container, I still cannot run the useradd command, as seen below:

So how to fix it? Thank you very much!

Steps to reproduce the issue

1. run nerdctl run -it --runtime io.containerd.kata.v2 ubuntu:20.04 sh to enter a container.
2. run su to enter the root mode in the container.
3. execute useradd, and then it raises the problem.

Describe the results you received and expected

I want to have the totally full root authority in my container created by nerdctl + kata.

What version of nerdctl are you using?

nerdctl: 1.7.5
kata: 3.3.0

Are you using a variant of nerdctl? (e.g., Rancher Desktop)

None

Host information

No response

[AkihiroSuda]

I cannot run the command useradd in my host, as seen below:

What is printing this error? Some third-party security software?

[zibinpan]

I cannot run the command useradd in my host, as seen below:

What is printing this error? Some third-party security software?

Yeah, it is printed by a higher level tower management system, which limits my host to run some commands like useradd. Therefore, I created a container with kata technique and I thought I could have a full control of my container. However, in the created container, I still cannot execute the commands that are forbidden in my host.