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#!/sbin/bash
#
#initial envirment
#variable define
IPADDR=192.168.0.12
NETMASK=255.255.255.0
HOSTNAME=station.domain12
DOMAIN='.example.com'
SERVER=instructor$DOMAIN
NAME_SERVER=192.168.0.1
GATEWAY=192.168.0.1
#Checking Selinux status
if [[ $(getenforce) == Disabled ]]
then
echo "Selinus is disabled, no aciton is requird!!"
else
echo > /etc/sysconfig/selinux
echo "SELINUX=disabled" >>/etc/sysconfig/selinux
echo "SELINUXTYPE=targeted" >>/etc/sysconfig/selinux
echo "Selinux status has been chenged successful!"
fi
#Setup ip address and dns
DEVICE=eth0
IFPATH=/etc/sysconfig/network-scripts
cat $IFPATH/ifcfg-$DEVICE >> /tmp/ifcfg-$DEVICE.bak
echo > $IFPATH/ifcfg-$DEVICE
echo "DEVICE=$DEVICE" >>$IFPATH/ifcfg-$DEVICE
echo "BOOTPROTO=static" >>$IFPATH/ifcfg-$DEVICE
echo "IPADDR=$IPADDR" >>$IFPATH/ifcfg-$DEVICE
echo "NETMASK=$NATMASK" >>$IFPATH/ifcfg-$DEVICE
echo "GATEWAY=$GATEWAY" >>$IFPATH/ifcfg-$DEVICE
echo "DNS1=$NAME_SERVER" >>$IFPATH/ifcfg-$DEVICE
echo "ONBOOT=yes" >>$IFPATH/ifcfg-$DEVICE
chkconfig NetworkManager off
service NetworkManager stop
service network restart
#hostname setup
NETWORK_FILE=/etc/sysconfig/network
echo > $NETWORK_FILE
echo "NETWORKING=yes" >> $NETWORK_FILE
echo "HOSTNANE=$HOSTNAME$DOMAIN" >> $NETWORK_FILE
echo "192.168.0.12 $HOSTNAME$DOMAIN" >> /etc/hosts
hostname $HOSTNAME$DOMAIN
echo "Hostname change succesfull, you may need to religin to aviod it."
#Add users
groupadd admin
useradd -G admin harry
useradd -G admin natasha
useradd -s /sbin/nologin tom
#setpassword for users
echo "harry"|passwd harry --stdin
echo "natasha"|passwd natasha --stdin
echo "User and passwd setup successful."
#Create dir for group admin with sepecial permssion.
mkdir /home/admins
chgrp admin /home/admins
chmod g+ws /home/admins
chmod o-rx /home/admins
#Create cron task for root
echo "23 14 * * * /bin/echo hello" > /root/cron.txt
crontab -e <<EOF
:r /root/cron.txt
:wq
EOF
chkconfig crond on
crontab -l
#
#find file and copy to another folder
mkdir /opt/dir
find / -user harry -exec cp -a {} /opt/dir \;
ls -l /opt/dir
#find key word from file and output to another one.
grep root /etc/passwd >/tmp/testfile
#add more swaps for linux
fdisk -cu /dev/sda <<EOF
n
e
4
+2G
n
l
t
5
82
p
wq
EOF
partx -a /dev/sda
mkswap /dev/sda5
echo "$(blkid /dev/sda5|awk '{print $2}') swap swap defauts 0 0" >> /etc/fstab
swapon -a
#User file swap, please un comment blow
#dd if=/dev/zero of=/tmp/swap.img bs=1M count=2000
#mkswap /tmp/swap.img
#echo "$(blkid /tmp/swap.img|awk '{print $2}') swap swap defauts 0 0" >> /etc/fstab
#swapon -a
swapon -s
free -m
#create with specified id and passwd
useradd -u 1234 alex
echo "alex111" |passwd alex --stdin
#Install ftpserver
REPO=/etc/yum.repos.d/rhel6.repo
echo "[Base]" > $REPO
echo "name=base" >> $REPO
echo "baseurl=http://$SERVER/rhel6" >> $REPO
echo "enabled=1" >> $REPO
echo "gpgcheck=0" >> $REPO
yum makecache
yum install vsftpd -y
chkconfig vsftpd on
service vsftpd start
#setup a simple http server
yum install httpd -y
chkconfig httpd on
cd /var/www/html
wget http://$SERVER/pub/example.html
mv example.html index.html
service httpd restart
#LDAP with autofs
yum groupinstall 'Directory Client' -y
service ntpd stop
ntpdate $SERVER
#cat /root/ntpconf.txt >/etc/ntp.conf
echo "$SERVER iburst">>/etc/ntp.conf
chkconfig ntpd on
service ntpd restart
vi /etc/sysconfig/authconfig <<EOF
:%s/USERLDAPAUTH=no/USERLDAPAUTH=yes/g
:wq
EOF
echo "URI ldap://$SERVER/" >/etc/openldap/ldap.conf
echo "BASE dc=example, dc=com" >>/etc/openldap/ldap.conf
echo "TLS_CACERTDIR /etc/openldap/cacerts" >> /etc/openldap/ldap.conf
cd /etc/openldap/cacerts
wget http://$SERVER/certs/cacert.pem
#cat /root/sssd.txt > /etc/sssd/sssd.conf
#service start sssd
authconfig --enableldap --enableldapauth --enablemkhomedir --ldapserver=instructor.example.com --ldapbasedn="dc=example,dc=com" --update
yum install autofs -y
echo "/lhome /etc/auto.ldap" >> /etc/auto.master
echo "* -fstype=nfs,rw $SERVER:/lhome/&"> /etc/auto.ldap
yum install nfs-utils -y
chkconfig autofs on
service autofs restart