install.sh

#!/bin/bash

if [ ! -f /usr/bin/vim ] ; then
	alias vim='vi'
fi

if [ -z "$( egrep "CentOS|Redhat" /etc/issue)" ]; then
	echo 'Only for Redhat or CentOS'
	exit
fi

echo -ne "
search xiu.com
nameserver 172.16.3.51
nameserver 172.16.3.52
nameserver 208.67.222.222
nameserver 202.67.220.220
nameserver 8.8.8.8
nameserver 4.4.4.4
" > /etc/resolv.conf

echo -ne "

* soft nofile 65536
* hard nofile 65536
" >>/etc/security/limits.conf

cat >> /etc/sysctl.conf <<EOF

net.ipv4.ip_local_port_range = 1024 65500
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_keepalive_time = 1200
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 4096
EOF

yum update -y
rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
rpm -K http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
rpm -i http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm


yum install ntp -y
vi /etc/ntp.conf <<VIM > /dev/null 2>&1
:22,24s/^/#/
:25,25s/^/\rserver 172.16.3.51\rserver 172.16.3.52\r/
:wq
VIM
service ntpd start
chkconfig ntpd on

yum install net-snmp -y
vi /etc/snmp/snmpd.conf <<VIM > /dev/null 2>&1
:62,62s/systemview/all/
:85,85s/^#//
:wq
VIM
service snmpd start
chkconfig snmpd on

yum install -y nrpe nagios-plugins
vi /etc/nagios/nrpe.cfg <<VIM > /dev/null 2>&1
:%s/allowed_hosts=127.0.0.1/allowed_hosts=172.16.1.2/
:wq
VIM

cat >> /etc/nagios/nrpe.cfg <<EOF

#command[check_http]=/usr/lib64/nagios/plugins/check_http -I 127.0.0.1 -p 80 -u http://www.example.com/index.html
command[check_swap]=/usr/lib64/nagios/plugins/check_swap -w 20% -c 10%
command[check_all_disks]=/usr/lib64/nagios/plugins/check_disk -w 20% -c 10% -e
EOF

chkconfig nrpe on
service nrpe start