prereq for cluster setup

prereq.sh

#!/bin/bash

set -x
#IFS=":"

LIST="87 90 89 88 91 85"
for i in $LIST; do
  ssh [email protected].$i ' 
passwd
chkconfig iptables off
/etc/init.d/iptables stop
chkconfig iptables --list
setenforce 0
cat > /etc/sysconfig/selinux <<\EOF
SELINUX=disabled
SELINUXTYPE=targeted
EOF
ip=`ifconfig eth0 2>/dev/null|awk '/inet addr:/ {print $2}' | sed 's/addr://'`
echo $ip
if [[ "$ip" == "10.2.1.85" ]]; then
 hostname server
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=server
EOF
 elif [[ "$ip" == "10.2.1.87" ]]; then
 hostname namenode
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=namenode
EOF
 elif [[ "$ip" == "10.2.1.88" ]]; then
 hostname snn
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=snn
EOF
 elif [[ "$ip" == "10.2.1.89" ]]; then
 hostname datanodeone
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=datanodeone
EOF
 elif [[ "$ip" == "10.2.1.90" ]]; then
 hostname datanodetwo
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=datanodetwo
EOF
 elif [[ "$ip" == "10.2.1.91" ]]; then
 hostname datanodethree
cat > /etc/sysconfig/network <<\EOF
 NETWORKING=yes
 HOSTNAME=datanodethree
EOF

cat >> /etc/hosts <<\EOF
10.2.1.85 server
10.2.1.87 nn
10.2.1.88 snn
10.2.1.89 datanodeone
10.2.1.90 datanodetwo
10.2.1.91 datanodethree
EOF
reboot
 '
done


# change disk space

#!/bin/bash
#p,n,p,3,20806, ,p,w
set -x
#IFS=":"

LIST="87 90 89 88 91 85"
for i in $LIST; do
  ssh [email protected].$i '
fdisk -l
lsblk
fdisk /dev/vda

'
done

vgextend VolGroup00 /dev/vda3
lvextend -l +100%FREE /dev/VolGroup00/LogVol00
resize2fs /dev/VolGroup00/LogVol00