http://www.rsyslog.com/downloads/download-other/
http://www.rsyslog.com/download/stable-download/page/files/download/rsyslog/rsyslog-5.8.13.tar.gz
[root@localhost sbin]# yum list |grep zlib
zlib.i386 1.2.3-7.el5 installed
zlib.x86_64 1.2.3-7.el5 installed
zlib-devel.x86_64 1.2.3-7.el5 installed
jzlib.x86_64 1.0.7-4jpp.1 base
jzlib-demo.x86_64 1.0.7-4jpp.1 base
jzlib-javadoc.x86_64 1.0.7-4jpp.1 base
zlib-devel.i386 1.2.3-7.el5 base
You have new mail in /var/spool/mail/root
yum install zlib-devel.x86_64
./configure
make
make all
ln -s /usr/local/sbin/rsyslogd rsyslogd (由3.22---->5.8.13)