Compute Block Maintenance Procedures; Shutting Off A Compute Node; Migrating Vms From A Compute Node - Lenovo ThinkAgile CP Hardware Part Replacement And Component Maintenance Procedures

Compute block maintenance procedures

This section covers the procedures required to perform compute block maintenance.
Refer to Chapter 2 "Roles and responsibilities" on page 15 to determine who can perform these procedures.

Shutting off a compute node

This procedure describes how to shut off a compute node and how to handle the VMs running on the
compute node.
Procedure performed by: Solution administrator
Execution: Web portal only
Compute node shutdown is performed on the Cloud Controller's web portal in the compute node's action
menu (...).
If you shut down a compute node with VMs running, prior to shutdown the system provides options to either
migrate the VMs to another compute node (according to the migration zone, categories, tags, and available
resources), or shut down the VM.
For best results, the VM owners should perform a proper shutdown within the VMs based on their
application-specific shutdown procedure.
You can find the VMs running in a specific compute node by going in the compute node from the Hardware
page and clicking View All in the Application Instances section.

Migrating VMs from a compute node

This procedure explains how to migrate VMs running on a compute node and prevent the compute node
from hosting new VMs.
Procedure performed by: Solution administrator; ThinkAgile Advantage Support (optional)
Execution: Web portal only
This procedure uses an in-product functionality called Maintenance Mode.
In a compute node action on the Hardware page in Cloud Controller, click Turn on Maintenance Mode. The
system performs a sanity check and presents the VMs running on the compute node that need immediate
action. Select Migrate. If a VM does not satisfy the requirements to move to another node (Migration Zone,
Compute Categories and Tags, resources, etc.), migration is not possible and the restriction (tags) can be
relaxed, or the VM must be shut down before being migrated to another node.
For best results and because of space limitations, VM owners should perform a proper shutdown within the
VMs based on their application-specific shutdown procedures.
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Chapter 5 Part replacement and maintenance procedures