cd /data0/software/
wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-7.noarch.rpm
rpm -ivh epel-release-7-7.noarch.rpm
yum erase rsyslog
yum install syslog-ng eventlog syslog-ng-libdbi
systemctl start syslog-ng.service