Hi Vincent,

I am fairly certain, that the images are identical, as I used to pod image from 
the jenkins logs (jenkins/inbound-agent:4.3-4). The second image I used in the 
pipeline for the build process was https://hub.docker.com/r/kasproject/kas 
which also should have a non-root user (builder, uid 30000). I am not sure how 
Jenkins handles the containerisation, but unless there is some magic in the 
background I do not understand, it should be one of those images.

Best regards

Mit freundlichen Grüßen

Jasper Orschulko
Build- und Configurationsmanager

Tel. +49 30 58 58 14 265
Fax +49 30 58 58 14 999
[email protected]<mailto:[email protected]>

• • • • • • • • • • • • • • • • • • • • • • • • • •

iris-GmbH
infrared & intelligent sensors
Ostendstraße 1-14 | 12459 Berlin

Geschäftsführer
M.-O. Brammann | R. Bönick | A. Thun
Amtsgericht Berlin-Charlottenburg
HRB 41 448 | USt-ID-Nr. DE 137228225

www.irisgmbh.de


________________________________
From: [email protected] [[email protected]] on 
behalf of Vincent Latombe [[email protected]]
Sent: Friday, September 11, 2020 11:50 AM
To: Jenkins Users
Subject: Re: Kubernetes Plugin: How to run commands within agent container as 
non-root?

> [Pipeline] container

What is your container definition? I really doubt it is the same image as what 
you're running through docker CLI.

Vincent


Le jeu. 10 sept. 2020 à 19:59, iris Jasper Orschulko 
<[email protected]<mailto:[email protected]>> a écrit :
I am trying to run a Pipeline in a Kubernetes agent, which needs to execute 
commands as non-root user. So I tried setting the securityContext of the Pod to 
1000 (the default jenkins user) as described here: 
https://plugins.jenkins.io/kubernetes/. However, the user does not exist in the 
container within Kubernetes:

[Pipeline] {
[Pipeline] stage
[Pipeline] { (Yocto Build)
[Pipeline] container
[Pipeline] {
[Pipeline] script
[Pipeline] {
[Pipeline] sh

+ set -ex
+ cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System 
(admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin

However, when running the same image (jenkins/inbound-agent:4.3-4) in docker 
directly, there is a jenkins user:

sudo docker run -it --rm jenkins/inbound-agent:4.3-4 bash
jenkins@255a3961e41e:~$ cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System 
(admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin
jenkins:x:1000:1000:Jenkins user:/home/jenkins:/bin/sh

Any ideas why this might be the case? Is this intentional? If so, what would be 
the right way to run the container as non-root?

Best regards

Mit freundlichen Grüßen

Jasper Orschulko
Build- und Configurationsmanager

Tel. +49 30 58 58 14 265
Fax +49 30 58 58 14 999
[email protected]<mailto:[email protected]>

• • • • • • • • • • • • • • • • • • • • • • • • • •

iris-GmbH
infrared & intelligent sensors
Ostendstraße 1-14 | 12459 Berlin

Geschäftsführer
M.-O. Brammann | R. Bönick | A. Thun
Amtsgericht Berlin-Charlottenburg
HRB 41 448 | USt-ID-Nr. DE 137228225

www.irisgmbh.de<http://www.irisgmbh.de>


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