Trying to use syslog-ng for latest Splunk enterprise. I am getting error " Failed to acquire /run/systemd/journal/syslog socket, disabling systemd-syslog source" when I try to run the service manually. This error prevents me to run the syslog-ng service in systemctl during bootup. Any idea or help would be appreciated.
While syslog-ng is often used with Splunk, it is not a part of Splunk solution and since your question is not related to issues with "interfacing" syslog-ng with Splunk but is rather a general issue with syslog-ng itself it'll be much better answered on its own mailing list.
https://lists.balabit.hu/mailman/listinfo/syslog-ng