If you are not familiar with the oc command, refer to OpenShift - Getting Started with the oc command.

An sosreport is a file that is created that contains debugging information that can be provided to Red Hat support.

Use the oc get nodes command to return the list of nodes.

~]# oc get nodes
NAME                 STATUS    ROLES     AGE       VERSION
dev001-infra-4k6z9   Ready     infra     273d      v1.11.0+d4cacc0
dev001-master-0      Ready     master    273d      v1.11.0+d4cacc0
dev001-worker-5n4fj  Ready     worker    273d      v1.11.0+d4cacc0

The oc debug command to start a node in debug mode. This will provide you with a command line prompt in a "debug" pod in the node that can be used for debugging purposes.

~]# oc debug node/dev001-worker-5n4fj
Starting pod/dev001-worker-5n4fj-debug ...
sh-4.4#

Use the chroot command to become root with a bash shell.

sh-4.4# chroot /host bash

Issue the toolbox command.

[root@lab001-worker-hsjrp /]# toolbox

Use the sosreport command to create the SOS report, which should create a file such as sosreport-ip-<host IP address>-yyyy-mm-dd.tar.xz.

[root@lab001-worker-hsjrp /]# sosreport
Your sosreport has been generated and saved in:
  /host/var/tmp/sosreport-ip-10-0-132-143-111111-2022-07-13-ilulmnh.tar.xz