Error during install

Nginx port to listen on [88]:
Starting nginx: nginx: [emerg] host not found in upstream “” in /etc/nginx/nginx.conf:17
ERROR: /opt/kaltura/bin/ failed:( You can re-run it when the issue is fixed.
Can someone show me how to fix this problem?


My guess would be is not resolvable.
Is it?

as far as I know it is. I took it down because no one answered. I am ready to install now if someone will tell me how to fix the error and if you goto the address now, you will see that I have setup a server control panel. I still want kaltura. Do I need to make server1 a subdomain?


It does not matter to Kaltura if this is a subdomain or not so long as it is resolvable.
You can check this by opening a listener using netcat with:
# nc -l 88
then trying to telnet to it with:
# telnet 88

until this works, there is no point in continuing with this hostname.