monitoring

VMCannotBeEvicted

Meaning

This alert fires when the eviction strategy of a virtual machine (VM) is set to LiveMigration but the VM is not migratable.

Impact

Non-migratable VMs prevent node eviction. This condition affects operations such as node drain and updates.

Diagnosis

1. Check the VMI configuration to determine whether the value of evictionStrategy is LiveMigrate of the VMI:

   $ kubectl get vmis -o yaml
   

2. Check for a False status in the LIVE-MIGRATABLE column to identify VMIs that are not migratable:

   $ kubectl get vmis -o wide
   

3. Obtain the details of the VMI and check spec.conditions to identify the issue:

   $ kubectl get vmi <vmi> -o yaml
   

   Example output:

   status:
     conditions:
     - lastProbeTime: null
       lastTransitionTime: null
       message: cannot migrate VMI which does not use masquerade to connect to the pod network
       reason: InterfaceNotLiveMigratable
       status: "False"
       type: LiveMigratable
   

Mitigation

Set the evictionStrategy of the VMI to shutdown or resolve the issue that prevents the VMI from migrating.

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