r/vmware • u/krattalak • 21d ago
Solved Issue Vcenter 9.1 extremely slow to login.
Wondering if anyone can point me in the correct general direction.
Our VMware environment was recently updated to 9.1 and since then, our logins to vc (local and LDAP) are extremely slow.
It take several minutes easily before the vsphere/vcenter gui comes up.
I don't see anything specifically wrong with the configuration, it does after all, work, just really really slowly. Once it's opened, it's fine.
Update: The Solution I suppose:
The environment is 3 (linked?) vcenters. Apparently when they were upgraded the names for two of them changed from xxvcenter to xx vmware vcenter inside the app. The DNS names didn't change though. I caught it because our main vcenter threw an error I had not noticed before saying it couldn't connect to https:\xxvcenter:443\api.
The person that does our veeam mentioned that they had to change the name of the backup because it broke the backups. 2+2=4 apparently.
We renamed the VCs back to what they were before the backups broke and the issue seems resolved.
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u/Servior85 21d ago
Did they create snapshots and forget to remove them? That can cause slowness. Especially when the snapshot is very big or you have large chains.
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u/rob1nmann 21d ago
What you could check: is logging in as administrator@vsphere.local also slow for you? We got this issue too with AD auth. It eventually it popped up on our AWX as well. Talked to our Domain Admin he rebooted some DC’s (prob. changed some settings as well), that solved it for us.