Error at installation

Hi there,
I’m a beginner of Nagios. Now I have some problem when I install nagios. And I also capture some error message to there. Please see below message .

[root@localhost nagios-3.0a4]# make install
cd ./base && make install
make[1]: Entering directory /home/Download/nagios-3.0a4/base' make install-basic make[2]: Entering directory/home/Download/nagios-3.0a4/base’
/usr/bin/install -c -m 775 -o nagios -g nagios -d /usr/local/nagios/bin
/usr/bin/install: invalid user nagios' make[2]: *** [install-basic] Error 1 make[2]: Leaving directory/home/Download/nagios-3.0a4/base’
make[1]: *** [install] Error 2
make[1]: Leaving directory `/home/Download/nagios-3.0a4/base’
make: *** [install] Error 2
[root@localhost nagios-3.0a4]#

I don’t understand why it show “invalid user `nagios’” and I have tried switch nagios user still show that error message.
Any idea for solve that problem…

OS: Red Hat Enterprise ES 4.0

tks & B Regd,
Frank

I think this is because you don’t have a user called nagios on the system. Did you add this user?