vCenter Server Appliance 6.0 : 503 Service Unavailable

Question

503 Service Unavailable (Failed to connect to endpoint: [N7Vmacore4Http16LocalServiceSpecE:0x7fc8bad2f810] _serverNamespace = /vsphere-client _isRedirect = false _port = 9090)

This is the error i'm constantly getting when trying to connect to the vCenter Server Web Client.

Details :

• I'v installed the vCS Appliance 6.0 on an ESXi 6.0 host. It's running on top of it along other VMs.
• I can access the vCS appliance thourght an SSH client, but every attempt to access the web client ends with the error above.
• I'v found that causes for this error are: the server being overloaded or under maintenance. However, I'm the only one to have access to this platform.

Any ideas ?

EDIT: Solved

I had a copy of the current vCenter appliance stored on the same ESXi. This created an IP conflict. I changed the IP address of the backup before its creation and the problem was solved

Solution

I found the answer:

The problem was that I made a backup of the current vCenter appliance and stored it on the ESXi 6.0 without changing it's IP address. This created an access conflict. All I had to do is to change the IP address of the backup during its creation and the problem was solved

Comments

[erkfel]

A few troubleshooting notes, since you have SSH access you can (1) check the status of the Web Client "service vsphere-client status", you can run it manually if it's not running for some reason (2) you can check the detailed Web Client logs at /var/log/vmware/vsphere-client/, they might contain more info about the issue

[mdahhani]

Thankx @erkfel. I'v figured the problem a while ago: I made a backup of the current vCenter appliance and stored it on the ESXi 6.0 without changing it's IP address. This created an access conflict. All I had to do is to change the IP address of the backup during its creation and Hop it's solved

[Cindy Meister]

Would you mind putting the information on how you solved this into an "Answer" then marking it as such? That would be very helpful for the StackOverflow site :-)

[αƞjiβ]

Please do elaborate your answer too.