For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:logging:elma:devel/openSUSE_Factory/security:logging:elma:devel.repo
zypper refresh
zypper install rsyslog
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:logging:elma:devel/openSUSE_13.2/security:logging:elma:devel.repo
zypper refresh
zypper install rsyslog
For openSUSE 13.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/security:logging:elma:devel/openSUSE_13.1/security:logging:elma:devel.repo
zypper refresh
zypper install rsyslog