When using the VMware vCenter Appliance if you find that it reports the following error
503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http20NamedPipeServiceSpecE:0x00005583dec71890] _serverNamespace = / action = Allow _pipeName =/var/run/vmware/vpxd-webserver-pipe)
This can be due to trying to access the web interface before the services have started, even though the application virtual machine has started and the login screen displayed.
It's a real shame that VMware doesn't show a proper startup window on the console of the vCenter server so you can see the services starting rather than having to guess what is going on.
503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http20NamedPipeServiceSpecE:0x00005583dec71890] _serverNamespace = / action = Allow _pipeName =/var/run/vmware/vpxd-webserver-pipe)
This can be due to trying to access the web interface before the services have started, even though the application virtual machine has started and the login screen displayed.
It's a real shame that VMware doesn't show a proper startup window on the console of the vCenter server so you can see the services starting rather than having to guess what is going on.