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.

  • hosts: all

  • groups: pre-undercloud-upgrade, pre-overcloud-upgrade

  • parameters:

    • check_rhsm_version_debug: False

  • roles: check_rhsm_version

Role documentation


Check DockerInsecureRegistryAddress parameter points to correct UC hostname.

This validation checks the DockerInsecureRegistryAddress parameter points to the right UC hostname

  • hosts: undercloud

  • groups: pre-overcloud-upgrade

  • parameters:

    • check_uc_hostname_debug: False

  • roles: check_uc_hostname

Role documentation


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.

  • hosts: nova_libvirt

  • 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

  • parameters:

    • compute_tsx_debug: False

    • compute_tsx_warning: False

  • roles: compute_tsx

Role documentation