Preparing Connections

Installation Guide > Pre-installation > Preparing Connections

Ensure the connectivity of the machine hosting the VM is adequate for the installation.

ICE OS VM Network Connection
Ensure the computer used when accessing the ICE OS Configuration Wizard is accessible on the ICE OS VM's network.

Port 8999
Ensure port 8999 is available and not blocked by a firewall.

Both DNS and NTP Servers Available
Ensure that both a working DNS server (or servers) and an NTP server are accessible on the ICE OS VM's network. ICE OS requires both to install and maintain the ICE Server. The DNS lookup time must be 5 seconds or less.

To verify a DNS server is working, run the nslookup command.

If the response resolves a hostname, reverse lookups an IP, or says 'host not found', then the DNS server is working.

If there is a timeout error, then the DNS server is NOT working.

Note: The DNS server does not need to:

 have an internet connection.

 resolve hosts on the internet.

 resolve cluster hostnames.

 perform reverse IP lookups.

If there is no DNS server, as a workaround, give the DNS the same address as the ICE server.