gistfile1.sh

#!/bin/bash

echo "Current iptables => "
iptables -L

echo "Flush iptables => "
iptables -F

echo "Save iptables => "
service iptables save

echo "Modify /etc/ssh/sshd_config"
sed -i -e "s:^#PermitRootLogin yes:PermitRootLogin yes:" /etc/ssh/sshd_config
sed -i -e "s:^#UseDNS yes:UseDNS no:" /etc/ssh/sshd_config

echo "Change to symbolic link."
rm /etc/udev/rules.d/70-persistent-net.rules
ln -s /dev/null /etc/udev/rules.d/70-persistent-net.rules


sed -i -e "s:^SELINUX=enforcing:SELINUX=disabled:" /etc/sysconfig/selinux

groupadd vagrant
useradd vagrant -g vagrant -G wheel
echo "vagrant ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
sed -i -e "s:^.*requiretty:#Defaults requiretty:" /etc/sudoers

mkdir -p /home/vagrant/.ssh
chmod 0700 /home/vagrant/.ssh

curl -L -o /home/vagrant/.ssh/authorized_keys https://raw.githubusercontent.com/mitchellh/vagrant/master/keys/vagrant.pub
chmod 0600 /home/vagrant/.ssh/authorized_keys

echo "exclude=centos*" >> /etc/yum.conf
yum -y update