[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2024-11-21。"],[],[],null,["This document describes how to prepare for a vCenter version upgrade and\nthe downtime during upgrade.\n\nDisable auto-repair\n\nBefore the vCenter upgrade,\n[disable `autoRepair`](/kubernetes-engine/distributed-cloud/vmware/docs/how-to/node-auto-repair#disabling_node_repair_and_health_checking_for_a_user_cluster)\non all user and admin clusters. This prevents machines from being recreated\nwhile vCenter is unavailable.\n\nDowntime during vCenter upgrade\n\nThere shouldn't be any downtime for the admin cluster and user clusters running\nin the vCenter during upgrade. The clusters remain up the entire time.\nHowever, there will be downtime for vCenter services like vMotion/DRS and\nVM creation.\n\nIf your workload directly interacts with vCenter, it might have downtime during\nthe vCenter upgrade due to the vCenter service unavailabilities.\n\nMajor version upgrade\n\nTo upgrade vCenter to the next major version, a new Virtual Center Appliance\nwill be deployed. And then all vCenter services are shutdown while it copies all\ndata to the new appliance. Once the data is copied, the new appliance reboots\nand takes over the identity (hostname/IP/etc) of the old vCenter.\n\nMajor version have been seen to have about 30 mins of downtime for the vCenter\nAPI.\n\nMinor version upgrade\n\nThe minor version upgrade will just update packages inside the OS and\nthen reboot the appliance, which takes shorter time than major upgrade.\n\nFor minor updates, we have seen a downtime around 5 mins for the vCenter API.\n\nKnown Issue\n\nMachines might go to `Unavailable` state after a vCenter reboot for versions\n\\\u003c 7.0U2. For more details, see the [known issue](/kubernetes-engine/distributed-cloud/vmware/docs/troubleshooting/known-issues#restarting-or-upgrading-vcenter-for-versions-lower-than-7.0u2)."]]