instal splunk soar, error can't read /etc/redhat-release

[bambarita]

does anyone ever know this issue,

I use centos8 stream to install soar 6.2.0 onprem,

but it can't read /etc/redhat-release

[phantom@10 splunk-soar]$ ./soar-prepare-system --splunk-soar-home /opt/splunk-soar/ --https-port 443
Detailed logs will be located at /opt/splunk-soar/var/log/phantom/phantom_install_log
Preparing system for installation of Splunk SOAR 6.2.0.355
Unable to read CentOS/RHEL version from /etc/redhat-release.
Traceback (most recent call last):
File "/opt/splunk-soar/./soar-prepare-system", line 93, in main
pre_installer.run()
File "/opt/splunk-soar/install/deployments/deployment.py", line 132, in run
self.run_pre_deploy()
File "/opt/splunk-soar/usr/python39/lib/python3.9/contextlib.py", line 79, in inner
return func(*args, **kwds)
File "/opt/splunk-soar/install/deployments/deployment.py", line 146, in run_pre_deploy
plan = DeploymentPlan.from_spec(self.spec, self.options)
File "/opt/splunk-soar/install/deployments/deployment_plan.py", line 51, in from_spec
deployment_operations=[_type(options) for _type in deployment_operations],
File "/opt/splunk-soar/install/deployments/deployment_plan.py", line 51, in <listcomp>
deployment_operations=[_type(options) for _type in deployment_operations],
File "/opt/splunk-soar/install/operations/optional_tasks/rpm_packages.py", line 53, in __init__
self.rpm_checker = RpmChecker(self.get_rpm_packages(), self.shell)
File "/opt/splunk-soar/install/operations/optional_tasks/rpm_packages.py", line 63, in get_rpm_packages
if get_os_family() == OsFamilyType.el7:
File "/opt/splunk-soar/install/install_common.py", line 340, in get_os_family
os_version = get_os_version()
File "/opt/splunk-soar/install/install_common.py", line 326, in get_os_version
return _get_centos_and_rhel_version()
File "/opt/splunk-soar/install/install_common.py", line 315, in _get_centos_and_rhel_version
raise InstallError("Unable to read CentOS/RHEL version from /etc/redhat-release.")
install.install_common.InstallError: Unable to read CentOS/RHEL version from /etc/redhat-release.
Pre-install failed.

while I open the /etc/redhat-release

[phantom@10 splunk-soar]$ cat /etc/redhat-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"

welcome for any suggestion

[isoutamo]

Hi
I’m not sure, but my expectation is that as Centos 8 isn’t supported (https://docs.splunk.com/Documentation/SOARonprem/6.2.0/Install/InstallUnprivileged), it cannot parse correctly content of this file.
r. Ismo