How to enable to ‘custom-domain()’ global option (4266819)

The ‘custom-domain()’ global option is used to specify a custom domain name that is appended after the short hostname to receive the FQDN. This option affects every outgoing message: eventlog sources, file sources, MARK messages and internal messages of syslog-ng PE.

In order for the ‘custom-domain()’ global option to work the ‘use-fqdn()’ global option must also be enabled as follows

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options {

stats_freq(0);
custom-domain("CUSTOM.DOMAIN.OPTION");
use-fqdn(yes);

};

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Here is a sample 'Before' Message:

Mar 11 11:38:45 centos75 systemd[1]: Starting Update UTMP about System Runlevel Changes...

And a corresponding 'After' Message:

Mar 11 11:40:42 centos75.CUSTOM.DOMAIN.OPTION systemd[1]: Starting Update UTMP about System Runlevel Changes...