VCSA 6.5 cannot be accessed, the solution to "503 Service Unavailable" was reported.

When accessing VCSA, it suddenly crashes and cannot be refreshed, but you can ping VCSA. After a long time, refresh the browser with the following error:

503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http20NamedPipeServiceSpecE:0x0000558181b429e0] _ serverNamespace = / action = Allow _ pipeName = / var/run/vmware/vpxd-webserver-pipe)

While we were looking for a solution, we suddenly stopped reporting this error and reported another similar error, as follows:

503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http16LocalServiceSpecE:0x00007fbd38074bd0] _ serverNamespace = / vsphere-client action = Allow _ port = 9090)

Solution:

Use SSH to log in to VCSA to view and resolve the problem.

VMware vCenter Server Appliance 6.5.0.14000Type: vCenter Server with an embedded Platform Services ControllerConnected to service * List APIs: "help api list" * List Plugins: "help pi list" * Launch BASH: "shell" Command > shell # using shell to connect Shell access is granted to rootroot@photon-machine [~] # root@photon-machine [~] # service -control-- help # View VMware services help root@photon-machine [~] # root@photon-machine [~] # service-control-- list-services # list all controllable VMware services root@photon-machine [~] # root@photon-machine [~] # service-control-- status vsphere-client # View VMware services running status Stopped: vsphere-clientroot@photon-machine [~] # service-control-- start vsphere-client # start vsphere-clientPerform start operation. Vmon_profile=None, svc_names= ['vsphere-client'], include_coreossvcs=False, include_leafossvcs=False2018-03-17T16:19:28.015Z Service vsphere-client state STOPPEDSuccessfully started service vsphere-clientroot@photon-machine [~] # service-control-status vsphere-clientRunning: vsphere-client

Vmware-vpxd vmware-eam vmware-invsvc

The local IP needs to connect to the ports required by the host EXSI management IP and Vcenter management IP