Checking system health

You can check the health of components in your Migrate for Compute Engine installation by using health checks pages in the Velostrata Manager. The health checks feature is useful after you've configured your system and are ready to migrate VMs.

Migrate for Compute Engine periodically performs health checks on the following components by polling for status, then displaying the results.

  • Cloud Extension
  • Exporter
  • Velostrata On-Premises Backend virtual appliance

Migrate for Compute Engine provides two places to check health:

  • In the Velostrata Backend, where you can confirm that the Velostrata Backend has a healthy connection with the Velostrata Manager. Without this connection, other health checks are not possible.
  • In the Velostrata Manager, where you can check the health of other components.

Migrate for Compute Engine provides health checks at any time for systems configured to migrate from vSphere. For other migration sources, health checks are available only during migration.

Checking health of the Velostrata Manager connection with the Velostrata Backend

Unless the connection between Velostrata Manager and the Velostrata Backend is healthy, the system will be unable to report on health for other components. To check on that Velostrata Manager connection, Migrate for Compute Engine provides user interface that you can reach directly via its URL.

  1. Log in to vCenter.
  2. In the Navigator pane, locate the Velostrata Backend VM created from the .ova file you installed.

    For more on deploying the Velostrata Backend, see Deploying the Velostrata Backend.

  3. On the Summary tab, note or copy the Host IP address.

  4. In a web browser, use the IP address to visit the health check page for the Velostrata Backend with a URL of the following form:

    https://IP-address
    
  5. In the on-prem appliance login page, enter the admin username and password you specified when deploying the Velostrata Backend, then click Login.

    On the Google Cloud Velostrata On-prem Appliance page, you can view the status of the connection with the Velostrata Manager.

Checking system health after successfully configuring Velostrata Manager

When the connection between Velostrata Manager and the Velostrata Backend is healthy, you can view health check information for other Migrate for Compute Engine components.

  1. Log in to the Velostrata Manager.
  2. On the Home page, click Target Cloud.
  3. On the Target Cloud page, view the list of Cloud Extensions, along with their state and health checks.
  4. To view an extension's health check information, click the Health checks icon at the right end of the extension's row in the list.
  5. On the Health Checks page, view the list of components for which health has been checked.

    Unhealthy connections will be displayed first by default. In the row for an unhealthy connection, the Result column will display Failed rather than Passed. The Reason column will display a message describing the failure, such as that the connection timed out or was denied.

Health check error codes

The following tables list the health check error codes for Cloud Extension nodes, Migrate for Compute Engine Exporter, and the Velostrata Backend.

The vCenter error console also displays errors returned by the Compute Engine and Cloud Storage APIs. For more information on these errors, refer to documentation for Compute Engine and Cloud Storage.

Cloud Extension edge nodes

Code Description
110 CloudEdge Process
120 CloudEdge Functionality
140 Storage Grid Process
145 Object Store Availability
150 Cloud Control Access
170 iSCSI Layer
800 Instance Running
820 Critical Disk Space Utilization
830 Instance Availability
840 Check Instance Not Terminated
850 Internal Error
860 SQS
900 Frontend connectivity from Backend\Importer

Migrate for Compute Engine Exporter

Code Description
140 Storage Grid Process
145 Object Store Availability
410 Exporter Process
420 Exporter Functionality
830 Instance Availability
840 Check Instance Not Terminated
850 Internal Error

Velostrata Backend

Code Description
210 Backend Service
220 Backend Functionality
830 Instance Availability
850 Internal Error
910 VC Connection Status from Backend
920 VC Credentials
930 VC Privileges
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