We have vCenter 6.5 installed on server 2012. We planned to go to 6.7 VCSA. However, the 2012 VM restarted and now vcenter web client doesnt come back up. We get the following:
503 Service Unavailable (Failed to connect to endpoint: [class Vmacore::Http::LocalServiceSpec:0x000000deb87e6ca0
] _serverNamespace = /vsphere-client action = Allow _port = 9090)
The problem we have is that there are still hosts that have 5.5 that had not been upgraded along with some distributed switches on older version that had not been updated. What should be the route to restore access to 6.5 so we can upgrade hosts and vDS then move to 6.7 VCSA?