さくらのクラウド(IaaS)でCentOS stream 8 を使い始めたのでバージョン情報を確認してみました。
/etc/centos-release
$ cat /etc/centos-release
CentOS Stream release 8
uname -r
$ uname -r
4.18.0-257.el8.x86_64
uname -morsv
$ uname -morsv
Linux 4.18.0-257.el8.x86_64 #1 SMP Thu Dec 3 22:16:23 UTC 2020 x86_64 GNU/Linux
/etc/os-release
$ cat /etc/os-release
NAME="CentOS Stream"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Stream 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 8"
REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream"
/etc/system-release-cpe
$ cat /etc/system-release-cpe
cpe:/o:centos:centos:8
hostnamectl
$ hostnamectl
Static hostname: localhost.localdomain
Icon name: computer-vm
Chassis: vm
Machine ID: (省略)
Boot ID: (省略)
Virtualization: kvm
Operating System: CentOS Stream 8
CPE OS Name: cpe:/o:centos:centos:8
Kernel: Linux 4.18.0-257.el8.x86_64
Architecture: x86-64