HBOC012E The z/OS® Log Forwarder cannot find a valid host name because the local host IP address is a loopback address.
The z/OS Log Forwarder must have the host name of the system from which it is gathering logs, which is also the system where the z/OS log forwarder is running.
The z/OS Log Forwarder uses the configured local host name as the host name. If no value is specified for the local host name, the host name of the local host is used instead.
In this case, no local host name is configured. It is because either the local host IP address is a loopback address, or the security manager does not allow the local host name to be retrieved.
The z/OS Log Forwarder tries to find a valid host name every 30 seconds until it is successful or stopped manually.
If the z/OS Log Forwarder was started at IPL time, system initialization might not be complete. Wait a few minutes to see if the z/OS Log Forwarder can eventually retrieve a valid host name. Otherwise, determine whether a problem exists with the TCP/IP configuration.
In the z/OS Log Forwarder data configuration file, you can also specify a unique local host name. In that case, the z/OS Log Forwarder uses the value in the data configuration file instead of the host name of the local host.