centos 系统初始化
centos 系统初始化
#!/bin/bash
# author cfwl create date of 2012-10-21
# blog http://cfwlxf.blog.51cto.com
# source user shell variable
PATH=/sbin:/bin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
export PATH
# Source system network library.
. /etc/sysconfig/network
# Source system function library.
. /etc/init.d/functions
SYSTEM_HOSTNAME(){
# Source system network library.
. /etc/sysconfig/network
# Update name of system host
printf "\033[33mplease input system host name:\033[0m " STR
read STR
# Judge system hostname
hostname $STR
sed -i "s/HOSTNAME=$HOSTNAME/HOSTNAME=$STR/" /etc/sysconfig/network
# Judge system hostname if equal user input name
HOSTNAME=$(awk -F '=' '/HOSTNAME/{print $2}' /etc/sysconfig/network)
if [ "$HOSTNAME" = "$STR" ]
then
sleep 2
printf "\033[35msystem host name is update by: $STR\033[0m $str\n"
else
printf "\033[35msystem host name is not update\033[0m\n"
exit 0
fi
}
# Update System SSH Service Port
SYSTEM_SSH_PORT(){
SSH_CONFIG=/etc/ssh/sshd_config
#Backup SSH configuration
cp -a ${SSH_CONFIG} ${SSH_CONFIG}.save
#Chage SSH server of port
sed -i '/^#Port/s/#Port 22/Port 65535/g' $SSH_CONFIG
sed -i '/^#UseDNS/s/#UseDNS yes/UseDNS no/g' $SSH_CONFIG
sed -i 's/#PermitRootLogin yes/PermitRootLogin no/g' $SSH_CONFIG
sed -i 's/#PermitEmptyPasswords no/PermitEmptyPasswords no/g' $SSH_CONFIG
sleep 2
#Prompt user if restart SSH service
printf "\033[32myou need to restart the SSH service,configuration to take effect.
1> Input \"y\", Now restart to SSH service.
2> Input \"n\", Later in the manual restart.
Please input string \"y/n\": \033[0m" RETVAL
read RETVAL
[ "$RETVAL" = "y" ] && sleep 2 && /etc/init.d/sshd restart
[ "$RETVAL" = "n" ] && sleep 2 && action "Later on please manual restart SSH service" true
}
# Close system Selinux and iptables function
SYSTEM_IPV4_FORWARD(){
#Close syetem selinux and iptalbes forward
sed -i '/^SELINUX/s/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
RETVAL=$(awk -F '=' '/^SELINUX=/{print $NF}' /etc/selinux/config)
[ "$RETVAL" = "disabled" ] && sleep 1 && printf "\033[36mSelinux Change [$RETVAL], please restart system by tack effect.\033[0m\n"
sleep 2
#Close syetem iptables forward
/etc/init.d/iptables stop && chkconfig iptables off
}
#Optimizing The System Service and Rsync System Time
CLOSE_SYSTEM_SERVER(){
#Stop All System Serivce
for server in `chkconfig --list | awk '{print $1}'`;do chkconfig $server off;done
#Start Up Assign System Service
for server in sshd messagebus rngd network crond rsyslog irqbalance;do chkconfig --level 35 $server on;done
#Print modify alter of service
RETVAL=$(chkconfig --list | egrep '3:on|5:on' | awk '{print $1}' | xargs)
printf "\033[35mPrint current system auto start of server: $RETVAL\033[0m\n"
#Rsync System Local Time
RETVAL=$(rpm -qa ntp | wc -l)
if [ $RETVAL = 1 ]
then
echo "5 * * * * ntpdate ntp.api.bz > /dev/null 2>&1" >> /var/spool/cron/root
else
yum install ntp
echo "5 * * * * ntpdate ntp.api.bz > /dev/null 2>&1" >> /var/spool/cron/root
fi
}
#Update Yum Source
UPDATE_YUM_SOURCE(){
# Judge YUM_BACK_DIR directory if exist
getDT=`date -d "today" +"%Y%m%d_%H%M%S"`
export getDT=$getDT
YUM_BACK_DIR=/etc/yum.repos.d/backup_$getDT/
YUM_DIR=/etc/yum.repos.d/
[ ! -d ${YUM_BACK_DIR} ] && mkdir ${YUM_BACK_DIR}
echo ${YUM_BACK_DIR}
#sleep 1000s
cd ${YUM_DIR}
find . -type f -name "*.repo" | xargs mv -t ${YUM_BACK_DIR}
RETVAL=0
#Determine the return value if 0.
[ $? = ${RETVAL} ] && printf "\033[32m
1.Inland 163 yum source
2.Inland sohu yum source
Judge:please input install 163 or sohu yum source:\033[0m" STR
read STR
case "$STR" in
163)
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
RETVAL=0
[ $? = ${RETVAL} ] && printf "\033[35mYum source is download successfully of 163 mirrors.\n\033[0m"
sleep 2
rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-7
yum update
yum makecache
;;
sohu)
wget http://mirrors.sohu.com/help/CentOS-Base-sohu.repo
RETVAL=0
[ $? = ${RETVAL} ] && printf "\033[35mYum source is download successfully of sohu mirrors.\n\033[0m"
sleep 2
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-*
yum update
yum makecache
;;
*)
echo -e "\033[31m Error: plase you input 163 or sohu.\033[0m"
UPDATE_YUM_SOURCE
exit 0
esac
}
#By the user to enter the digital implementation corresponding function
echo -e "\033[32m ----------------------------------------------------------------------------------------------------------------
| welcome to syetem initialize scripts |
----------------------------------------------------------------------------------------------------------------
|Judge: Scripts Can realize the function as follows: |
|(1)Modification system host name . |
|(2)Close system SELINXU and iptables. |
|(3)Modification SSH service port as configure. |
|(4)Close System Don't use of Service and update system time |
|(5)Update System Yum Source |
----------------------------------------------------------------------------------------------------------------\033[0m"
read -p "Please according number input you want execute of function: " number
case "$number" in
1)
SYSTEM_HOSTNAME
RETVAL=0
[ $? = $RETVAL ] && action "System host name update successfully,please restart system." true
;;
2)
SYSTEM_IPV4_FORWARD
;;
3)
SYSTEM_SSH_PORT
RETVAL=0
[ $? = $RETVAL ] && action "Update System SSH Service Port already successfully." true
;;
4)
CLOSE_SYSTEM_SERVER
RETVAL=0
[ $? = $RETVAL ] && action "Initialize Sytem Service already successfully." true
;;
5)
UPDATE_YUM_SOURCE
RETVAL=0
[ $? = $RETVAL ] && action "Update System Yum Source already successfully." true
;;
*)
printf "\033[36mError: please you input prompt dialog box of number:1-5\033[0m\n"
;;
esac
