Se o grupo não estiver balanceado e você quiser reativar a distribuição proativa de instâncias,
primeiro reequilibre o grupo manualmente para atingir uma distribuição uniforme
de instâncias entre zonas.
Reequilibrar manualmente excluindo VMs ou redimensionando o grupo
É possível reequilibrar o grupo manualmente para alcançar uma distribuição
uniforme de instâncias entre zonas
excluindo VMs
das zonas com mais instâncias ou
redimensionando
para adicionar instâncias a zonas com menos VMs até que a distribuição esteja uniforme.
Quando você redimensiona um MIG com a redistribuição proativa de instâncias desativada,
o grupo ainda converge de forma oportunista para o equilíbrio, tratando cada
operação de redimensionamento como uma oportunidade para equilibrar o grupo:
Quando o grupo cresce, o grupo sempre tenta adicionar VMs às zonas com
o menor número de VMs.
Quando o grupo diminui, o grupo sempre remove as VMs das zonas com o
maior número de VMs.
Exemplo de redimensionamento manual de um grupo para conseguir redistribuição uniforme
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Não contém as informações de que eu preciso","missingTheInformationINeed","thumb-down"],["Muito complicado / etapas demais","tooComplicatedTooManySteps","thumb-down"],["Desatualizado","outOfDate","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Problema com as amostras / o código","samplesCodeIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-08-19 UTC."],[[["\u003cp\u003eA regional managed instance group (MIG) is considered unbalanced when the difference in virtual machines (VMs) between two zones is two or more.\u003c/p\u003e\n"],["\u003cp\u003eManually rebalancing an unbalanced MIG involves deleting VMs from zones with more instances or resizing the group to add instances to zones with fewer VMs.\u003c/p\u003e\n"],["\u003cp\u003eEven with proactive instance redistribution turned off, resizing a MIG will cause it to opportunistically converge toward balance by adding VMs to zones with the fewest or removing them from the zones with the most.\u003c/p\u003e\n"],["\u003cp\u003eRe-enabling proactive redistribution requires an initial manual rebalancing of the MIG to ensure an even distribution of instances across zones.\u003c/p\u003e\n"]]],[],null,["*** ** * ** ***\n\nA\n[regional managed instance group (MIG)](/compute/docs/instance-groups#managed_instance_groups)\nis not balanced if the difference in the number of VMs between\ntwo zones is 2 or more VMs. A regional MIG can fall out of balance if you\ndisable\n[proactive instance redistribution](/compute/docs/instance-groups/regional-migs#proactive_instance_redistribution)\nand then delete or abandon instances to cause an uneven distribution across\nzones.\n\nIf your group is not balanced and you want to re-enable proactive instance\ndistribution, you must first manually rebalance your group to achieve an even\ndistribution of instances across zones.\n\nManually rebalance by deleting VMs or resizing the group\n\nYou can manually rebalance your group to achieve an even distribution of\ninstances across zones by\n[deleting](/compute/docs/instance-groups/add-remove-vms-in-mig#delete_from_group)\nVMs from zones with more instances or by\n[resizing](/compute/docs/instance-groups/add-remove-vms-in-mig#resize_managed_group)\nto add instances to zones with fewer VMs until the distribution is even.\n\nWhen you resize a MIG that has proactive instance redistribution turned off,\nthe group still *opportunistically* converges toward balance, treating each\nresize operation as an opportunity to balance the group:\n\n- When the group grows, the group always tries to add VMs to the zones with the smallest number of VMs.\n- When the group shrinks, the group always removes VMs from the zones with the largest number of VMs.\n\n[](/static/compute/images/rmig-manual-redistribution.svg) *Example of manually resizing a group to achieve even redistribution*\n\nWhat's next\n\n- Learn how to re-enable or disable [proactive redistribution](/compute/docs/instance-groups/regional-mig-enable-disable-proactive-redistribution).\n- Learn how to set a regional MIG's [target distribution shape](/compute/docs/instance-groups/regional-mig-set-target-distribution-shape)."]]
