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14.3. Latency checkups

You can use a latency checkup to verify network connectivity and measure latency between two virtual machines (VMs) that are attached to a secondary network interface. The predefined latency checkup uses the ping utility.

중요

Before you run a latency checkup, you must first create a bridge interface on the cluster nodes to connect the VM’s secondary interface to any interface on the node. If you do not create a bridge interface, the VMs do not start and the job fails.

Running a predefined checkup in an existing namespace involves setting up a service account for the checkup, creating the Role and RoleBinding objects for the service account, enabling permissions for the checkup, and creating the input config map and the checkup job. You can run a checkup multiple times.

중요

You must always:

  • Verify that the checkup image is from a trustworthy source before applying it.
  • Review the checkup permissions before creating the Role and RoleBinding objects.

14.3.1. Running a latency checkup by using the web console
링크 복사

Run a latency checkup to verify network connectivity and measure the latency between two virtual machines attached to a secondary network interface.

Prerequisites

  • You must add a NetworkAttachmentDefinition to the namespace.

Procedure

  1. Navigate to Virtualization Checkups in the web console.
  2. Click the Network latency tab.
  3. Click Install permissions.
  4. Click Run checkup.
  5. Enter a name for the checkup in the Name field.
  6. Select a NetworkAttachmentDefinition from the drop-down menu.
  7. Optional: Set a duration for the latency sample in the Sample duration (seconds) field.
  8. Optional: Define a maximum latency time interval by enabling Set maximum desired latency (milliseconds) and defining the time interval.
  9. Optional: Target specific nodes by enabling Select nodes and specifying the Source node and Target node.
  10. Click Run.

Verification

  • To view the status of the latency checkup, go to the Checkups list on the Latency checkup tab. Click on the name of the checkup for more details.
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