This error occurs when attempting to start a WebSphere application server. In this example, the unknown host name is was1.
[1/22/18 23:23:47:208 CST] 00000001 WsServerImpl E WSVR0009E: Error occurred during startup com.ibm.ws.exception.RuntimeError: org.omg.CORBA.INTERNAL: defaultLocalHost:java.net.UnknownHostException: was1: was1: unknown error vmcid: IBM minor code: 583 completed: No.
If "was1" is not the fully qualified domain name, this suggests that the hostname of the Linux server is "was1" instead of the fully qualified domain name. For example, if the fully qualified domain name is was1.example.com, update the /etc/hostname file to have was1.example.com as the hostname. Try to start the application server again and updating the hostname.
echo "was1.example.com" > /etc/hostname
Ensure that the hostname (was1 in this example) can be resolved to an IP address. If the hostname cannot be resolved to an IP address, DNS will need to be configured to resolve the hostname to an IP address. In this example, the nslookup command confirms that hostname was1 does not resolve to an IP address.
~]# nslookup was1 Server: 10.1.2.3 Address: 10.1.2.3:53 ** server can't find was1: NXDOMAIN
After confirming the DNS server to resolve was1 to an IP address, the server should be able to be started. In this example, the nslookup command confirms that hostname was1 resolves to IP address 10.14.55.201.
~]# nslookup was1 Server: 10.1.2.3 Address: 10.1.2.3:53 Name: was1 Address: 10.14.55.201