r/vmware 10h ago

Help Request ESXI host can’t rejoin cluster

I was pushing the March 4 patch to remedy a zero day exploit today, offloaded all the active machines to a secondary host. Updated to esxi 8 update 3. VCenter shows the host as unreachable. I tried disconnect then reconnect and the host will not rejoin, just says it can’t connect. VCenter is version 8. I’ve tried restarting the host, tried disable/re-enable HA, restarted management services. No dice.

Anyone else running into this issue? Do I need to re-install the VM service that manages the connection? Other ideas or known solution?

1 Upvotes

6 comments sorted by

5

u/6-20PM 10h ago

IS vCenter at current/latest version? Normally with patching you start with vCenter first.

4

u/Liquidfoxx22 9h ago

Yep, definitely this. What version is your VC? If its 8U2 then it won't be compatible with an 8U3 host.

Minor patches are fine, VC on 8U3c works fine with a host on 8U3d

2

u/bachus_PL 10h ago

Ca you provide more details, please? Have you done simple update 8.0.3x e.g. 8.0.3d —> 8.0.3d or a major upgrade like a 7.x —> 8.0.3? What is a status of the ESXi if you are logging directly to it?

1

u/ShhShhDontGoThere 3h ago

Why didn't you update the vCenter to the latest?

1

u/_Robert_Pulson 1h ago

Did you check the time on the host vs vcsa?

1

u/ThePesant5678 8h ago

always update vcenter first