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Migrations

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Overview

Migration helps you to discover your current cluster and its detailed usage such that you can plan and make an effective and informed migration to a cloud platform, in a faster and more cost-efficient way.

  • Cluster Discovery analyzes your on-prem cluster usage, workload patterns, and your hosts' hardware configuration.

  • Cloud Mapping per HostCloud mapping per host

    • Lift and Shift is a one-to-one mapping of each existing host's capacity (based on CPU, memory, and disk) to the closest fit on the cloud, which meets or exceeds the host's hardware specifications. This method provides an estimate of what your current on-prem cluster configuration can cost on the cloud. This does not consider workload or actual resource usage, however, it minimizes your risks associated with migrating to the cloud

    • Cost Reduction is a-one-to-one mapping of each existing host’s actual usage (based on CPU, memory, and disk) to the closest fit on the cloud that meets or exceeds the host's usage requirements. This method optimizes for cost, but not necessarily peak-usage. While still a one-to-one mapping, this method is usually more cost-effective than lift and shift as it minimizes over-provisioning (the under-utilization of your host's resources).

  • Workload FitWorkload Fit maps your workload onto the cloud and is not a one-tone mapping of your hosts like Cloud Mapping per host. Because it maps workload instead of hosts it should result in lower cost.

  • Services and versions compatibility compares what is on your cluster and the component versions offered by the target you selected for the report.

All the reports are generated based upon an analysis of your cluster workload over 30days of history except for the Cluster Discovery report.

  • Analyze on-prem HDP or CDH clusters.

  • Examine the costs of running your clusters on:

    • Azure Databricks

    • AWS Databricks

    • Google Compute Engine (IaaS)

    • Google DataProc

    • Amazon EC2 (Iaas)

    • Amazon EMR

    • Azure (Iaas)

    • Azure HDInsight

Limitations

  • Your cluster must have at least seven days of metrics for Unravel to generate useful reports.

  • Clusters running MapR Control System are not supported.

Important

You must set the cluster manager properties to use Migration Planning Reports.

Configuring the Migration reports

To configure the Migration reports do the following:

  1. Stop Unravel.

    <Unravel installation directory>/unravel/manager stop

  2. Select the cluster where the migration reports must be enabled. Run the following command:

    <Unravel installation directory>/unravel/manager config ondemand select-cluster

    Note

    In the case of multi-cluster deployment, this configuration is set on the core node. However, you must provide the edge nodes where you want to set the Migration report. 

    <Unravel installation directory>/unravel/manager config on-demand select-cluster <edge-node>

  3. Provide the edge-key when prompted. Run the manager config edge show command to get the edge key.

  4. Enable the Migration reports as an admin user. Run the following command:

    <Unravel installation directory>/unravel/manager config ondemand cloud-migration enable

    Provide username and password of the Unravel Web UI when prompted.

  5. Apply the changes.

    <Unravel installation directory>/unravel/manager config apply

  6. Start Unravel

    <Unravel installation directory>/unravel/manager start
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