Chapter 2 - Lab: Container Login

Robson Esteves

Hi,

In the Lab regarding systemd-nspawn, the Debian container created presentes a login prompt. What's the user and password to login? 

Other point: I tried to create a container using a different OS: using debootstrap I deployed a Ubuntu Trusty. After that I used systemd-nspawn -bD command to create the container in this OS.

As the next step I opened a new window and access de VM and using the machinectl commands I verify the status of the container and was running.  I tried to access the container using machinectl login container name, but without sucess....

A message informing something about "a bus not present"....

In summary: how I can login the containers created using systemd-nspawn? What are the options for that?

Thanks!

Robson

nkhare

Hi Robson, 

 

The lab given in this chapter is to showcase that we can start the containers using systemd-nspawn. 

 

If we would like to login, then we need to first set the password for root user or create a new user. For that can use chroot after the debootstrap step and before the systemd-nspawn step, like following:-

 

root@ubuntu-512mb-nyc3-01:~# debootstrap --arch=amd64 stable ~/DebianJessie

root@ubuntu-512mb-nyc3-01:~# chroot ~/DebianJessie/ /bin/bash

root@ubuntu-512mb-nyc3-01:/# passwd

Enter new UNIX password:

Retype new UNIX password:

passwd: password updated successfully

 

root@ubuntu-512mb-nyc3-01:~# systemd-nspawn -bD ~/DebianJessie

...

...

[  OK  ] Started Update UTMP about System Runlevel Changes.

 

Debian GNU/Linux 8 ubuntu-512mb-nyc3-01 console

 

ubuntu-512mb-nyc3-01 login: root

Password:

Linux ubuntu-512mb-nyc3-01 4.4.0-77-generic #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017 x86_64

 

Hope this helps. 

 

Thanks, 

Neependra

nkhare

Hi Robson, 

 

The lab given in this chapter is to showcase that we can start the containers using systemd-nspawn. 

 

If we would like to login, then we need to first set the password for root user or create a new user. For that can use chroot after the debootstrap step and before the systemd-nspawn step, like following:-

 

root@ubuntu-512mb-nyc3-01:~# debootstrap --arch=amd64 stable ~/DebianJessie

root@ubuntu-512mb-nyc3-01:~# chroot ~/DebianJessie/ /bin/bash

root@ubuntu-512mb-nyc3-01:/# passwd

Enter new UNIX password:

Retype new UNIX password:

passwd: password updated successfully

 

root@ubuntu-512mb-nyc3-01:~# systemd-nspawn -bD ~/DebianJessie

...

...

[  OK  ] Started Update UTMP about System Runlevel Changes.

 

Debian GNU/Linux 8 ubuntu-512mb-nyc3-01 console

 

ubuntu-512mb-nyc3-01 login: root

Password:

Linux ubuntu-512mb-nyc3-01 4.4.0-77-generic #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017 x86_64

 

Hope this helps. 

 

Thnaks, 

Neependra

 

Robson Esteves

Done and works fine! Thanks again Neependra.

BR

Robson