By default, Solaris uses its native syslog as the default log manager:
svcs system-log STATE STIME FMRI disabled 12:07:34 svc:/system/system-log:rsyslog online 12:08:10 svc:/system/system-log:default
If you want to use rsyslog, check if the package is installed (on my machine it’s already there):
pkg info system/rsyslog
To install it:
pkg install system/rsyslog
Now, to use rsyslog, first you have to disable the native syslog:
svcadm disable system/system-log:default
Then enable and refresh the service:
svcadm enable system/system-log:rsyslog svcadm refresh system/system-log:rsyslog
To check the status:
svcs -p rsyslog
STATE STIME FMRI
online 12:10:04 svc:/system/system-log:rsyslog
12:10:04 1199 rsyslogd