Verify that the RSHM version configured is the right one.
This validation checks the RHSM version of the target node via subscription-manager release –show and makes sure that the release matches the value set in check_rhsm_version_expected.
groups: pre-undercloud-upgrade, pre-overcloud-upgrade
Check DockerInsecureRegistryAddress parameter points to correct UC hostname.
This validation checks the DockerInsecureRegistryAddress parameter points to the right UC hostname
RHEL8.x kernel flag for Compute nodes validation.
RHEL-8.3 kernel disabled the Intel TSX (Transactional Synchronization Extensions) feature by default as a preemptive security measure, but it breaks live migration from RHEL-7.9 (or even RHEL-8.1 or RHEL-8.2) to RHEL-8.3.
Operators are expected to explicitly define the TSX flag in their KernelArgs for the compute role to prevent live-migration issues during the upgrade process.
This also impacts upstream CentOS systems.
groups: pre-upgrade, pre-system-upgrade, pre-overcloud-prepare, pre-overcloud-upgrade, pre-overcloud-converge, pre-update, pre-update-prepare, pre-update-run, pre-update-converge