Forwarding logs to a syslog server from vRealize Operations Manager has been greatly simplified with the latest 6.0 release. Instead of having to manually tweak syslog-ng.conf with past releases, there is now a new UI option under Administration->Support->Logs which allows you to easily configure syslog configurations. There are currently 4 loggers (Analytics, Collector, Web & SuiteAPI) that can be configured to be forwarded to a syslog server.
Though this is a nice UI enhancement, it would have been really nice to have been able to configure this using an API. In doing some digging, I found that you could still automate the syslog configurations by simply adding a couple of lines into the respective log4j.properties files:
Here is a simple shell script called configurevROpsSyslog.sh that you can run against your vROps instance to forward your logs. There are two variables SYSLOG_SERVER and SYSLOG_SERVER_PORT that will need to be updated before running the script. Here is an example of running the script that can come in handy to forwarding your logs to your favorite syslog server such as vRealize Operations Insight.
UPDATE (01/17/15) - Thanks to Steve Flanders for letting me know there is one additional location for configuring syslog which is the Audit logs located in under Administration->Audit. It looks like the configuration also goes into the Collector log4j.properties and I have updated my script to ensure this is also configured as part of the script.