Resolving Dependencies
–> Running transaction check
—> Package zabbix-agent.x86_64 0:4.0.0-1.1alpha6.el6 will be installed
–> Processing Dependency: libpcre.so.0()(64bit) for package: zabbix-agent-4.0.0-1.1alpha6.el6.x86_64
–> Finished Dependency Resolution
Error: Package: zabbix-agent-4.0.0-1.1alpha6.el6.x86_64 (zabbix)
Requires: libpcre.so.0()(64bit)
You could try using –skip-broken to work around the problem
You could try running: rpm -Va –nofiles –nodigest

You should check if zabbix-release match your OS version than:
yum remove zabbix*
yum clean all
mv /var/cache/yum /var/cache/yum_old
yum install zabbix-agent