in gentoo /var/run/ now symlink to /var, var mounted via tmpfs.

1. ls -l /var/ | grep run
   lrwxrwxrwx 1 root root 4 Dec 3 12:47 run -> /run

#mount | grep \/run
tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755)

openrc start script need some patch seems:

/etc/init.d/zabbix-agentd

start()

{ ebegin "Starting Zabbix agent" + [ -d /var/run/zabbix ] || mkdir /var/run/zabbix; chown zabbix:zabbix /var/run/zabbix start-stop-daemon --start --user zabbix --group zabbix --exec /usr/sbin/zabbix_agentd eend $? }

Maybe need more flexible and more beatiful solution