cpo@BR1:~$ sh system kernel-messages dmesg: read kernel buffer failed: Operation not permitted
This is due to: https://lwn.net/Articles/414813/ and it should be called with sudo prefixed.
cpo@BR1:~$ show version Version: VyOS 1.2.0-epa2 Built by: Sentrium S.L. Built on: Tue 01 Jan 2019 15:49 UTC Build ID: de3f51aa-ea99-40d8-ab33-228238317f7e Architecture: x86_64 Boot via: installed image System type: bare metal Hardware vendor: Supermicro Hardware model: Super Server Hardware S/N: Unknown Hardware UUID: Unknown Copyright: VyOS maintainers and contributors