run script runcluvfy.sh with errors

my environment:

[root@spmprod2 ~]# more /etc/issue
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
Kernel \r on an \m

[root@spmprod2 ~]# uname -a
Linux spmprod2 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
[root@spmprod2 ~]# more /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6
10.30.9.150     spmprod1 
10.30.9.151     spmprod2

10.30.9.155     spmprod1-vip
10.30.9.156     spmprod2-vip

20.30.9.150     spmprod1-priv
20.30.9.151     spmprod2-priv

[root@spmprod2 ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1B:21:92:17:30 
          inet addr:10.30.9.151  Bcast:10.30.255.255  Mask:255.255.0.0
          inet6 addr: fe80::21b:21ff:fe92:1730/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1527251 errors:0 dropped:0 overruns:0 frame:0