Identifying Hosts:
Via the vpxd.log of the vCenter you are looking for entries by running a grep with one of the following strings:
"no host sync yet"
"Last login to"
cat /var/log/vmware/vpxd/vpxd.log | grep -i "Last login to"
cat /var/log/vmware/vpxd/vpxd.log | grep -i "no host sync yet"
Entries will be similar to:
2023-12-20T18:57:42.210Z error vpxd[04268] [Originator@6876 sub=Vmomi opID=30302e91] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T18:59:03.990Z error vpxd[05951] [Originator@6876 sub=Vmomi opID=1acad430] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T18:59:23.357Z error vpxd[05329] [Originator@6876 sub=Vmomi opID=4b033c97] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T18:59:57.823Z error vpxd[05123] [Originator@6876 sub=Vmomi opID=37373744] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T19:00:19.618Z error vpxd[03993] [Originator@6876 sub=Vmomi opID=5a836887] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T19:00:19.777Z error vpxd[06549] [Originator@6876 sub=Vmomi opID=302457d7] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
2023-12-20T19:00:19.901Z error vpxd[05302] [Originator@6876 sub=Vmomi opID=5e9ec29a] [VpxaClientAdapter] Last login to esxi01.gss.labs.org failed; timeout; no host sync yet
Resolving Issue:
Once the hosts are identified you have the following options:
Some instances have had success with increasing the wizard timeout to allow for the esxi host call to timeout before the wizard
* Extending the default timeout periods for vCenter Server, ESX/ESXi hosts, and vCenter Update Manager (1017253)
https://kb.vmware.com/s/article/1017253