To ensure that the health of a cluster or standalone host is optimal and that no problems occur during remediation, you can perform a remediation pre-check.

The remediation pre-check operation includes a series of checks for the cluster and for each host in the cluster, and for the standalone host. These checks include extensive health checks to determine whether the cluster or host is in a stable state and to ensure successful remediation. Also, the remediation pre-check triggers a compliance check for the cluster or for the standalone host. As a result, after the remediation pre-check, you can view compliance information for each host and whether host reboot or maintenance mode are necessary for successful remediation.

For vSAN clusters, the remediation pre-check operation includes a hardware compatibility check. Depending on how you configure the vSphere Lifecycle Manager remediation settings, vSphere Lifecycle Manager might prevent remediation if hardware compatibility issues exist. For information about configuring the global vSphere Lifecycle Manager remediation settings, see Configure vSphere Lifecycle Manager Remediation Settings for Clusters or Standalone Hosts that You Manage with a Single Image. For information about configuring the remediation settings for a particular cluster, seeOverride the Global vSphere Lifecycle Manager Remediation Settings for a Cluster or Host That You Manage with a Single Image.

Prerequisites

Verify that you have the proper privileges. See vSphere Lifecycle Manager Privileges For Using Images.

Procedure

  1. In the vSphere Client, navigate to a cluster or host that you manage with a single image.
  2. On the Updates tab, select Hosts > Image.
  3. In the Image Compliance card, click the Run pre-check button.
    You can observe the progress of the pre-check task. When the task finishes, vSphere Lifecycle Manager displays information about the issues found during the pre-check.

What to do next

If vSphere Lifecycle Manager reports no issues, remediate the cluster or the standalone host. See Remediate a Cluster Against a Single Image or Remediate a Single Host Within a Cluster or a Standalone Host Against an Image.

If issues are reported, resolve the issues before you remediate the cluster or the standalone host.

Run a Remediation Pre-Check for a Single Host Within a Cluster or a Standalone Host

Instead of generating a remediation pre-check report for the entire cluster, you can run a remediation pre-check task for a single host in the cluster. You can also run a remediation pre-check for a standalone host in your inventory.

The remediation pre-check task ensures that the host can be successfully remediated.

Prerequisites

Verify that you have the proper privileges. See vSphere Lifecycle Manager Privileges For Using Images.

Procedure

  1. In the vSphere Client, navigate to a cluster or a standalone host that you manage with a single image.
  2. On the Updates tab, select Hosts > Image.
  3. Run a remediation pre-check for the standalone host or a single host within the cluster.
    Option Action
    Run a pre-check for a single host within the cluster.
    1. In the Image Compliance card, select a host from the list of hosts.

      An information panel appears on the right.

    2. Select Actions > Run pre-check.

      The Running pre-check card appears above the list of hosts. You can observe the progress of the task.
    Run a pre-check for a standalone host.
    1. In the Image Compliance card, click the Run pre-check button.

      The Running pre-check dialog appears inside the Image Compliance card. You can observe the progress of the task.

Results

When the pre-check finishes, vSphere Lifecycle Manager displays information about the issues found during the pre-check.

What to do next

If vSphere Lifecycle Manager reports no issues, you can remediate the host. See Remediate a Single Host Within a Cluster or a Standalone Host Against an Image.

If vSphere Lifecycle Manager reports any issues, resolve the issues before you remediate the host.