[Release-1.25] - k3s check-config does not respect rootless mode

[brandond]

Backport fix for k3s check-config does not respect rootless mode

• k3s check-config does not respect rootless mode #8403

[fmoral2]

Validated on Version:

-$ k3s version v1.25.14+k3s-1f3880c7 (1f3880c7)

Environment Details

Infrastructure
Cloud EC2 instance

Node(s) CPU architecture, OS, and Version:
PRETTY_NAME="Ubuntu 22.04.1 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"

Cluster Configuration:
1 node servers

Steps to validate the fix

1. Install k3s supported version but dont start it
2. Run k3s check config as non root / root / non root user
3. As non root assets shoul be on home directory
4. As root assets should be on /var/lib/rancher/k3s/data/./bin
5. As non root user again should again be at home.

Validation Results:

~$ k3s -v
k3s version v1.25.14+k3s-1f3880c7 (1f3880c7)
go version go1.20.8


~$ k3s check-config

Verifying binaries in /home/ubuntu/.rancher/k3s/data/./bin:
- sha256sum: good
- links: good

System:
- /usr/sbin iptables v1.8.7 (nf_tables): ok
- swap: disabled
- routes: ok



As root :


Verifying binaries in /var/lib/rancher/k3s/data/./bin:
- sha256sum: good
- links: good

System:
- /usr/sbin iptables v1.8.7 (nf_tables): ok
- swap: disabled
- routes: ok


non root user:

$ k3s check-config

Verifying binaries in /home/ubuntu/.rancher/k3s/data/./bin:
- sha256sum: good
- links: good

System:
- /usr/sbin iptables v1.8.7 (nf_tables): ok
- swap: disabled
- routes: ok