linux安裝后初始化腳本

以下腳本用於linux系統的初始化腳本,可以在伺服器系統安裝完畢之後立即執行.腳本結合各位大牛一些參數,已經在CentOS 5下通過.
使用方法：將其複製,保存為一個shell文件,比如init.sh.將其上傳到linux伺服器上,執行sh init.sh.建議大家在系統安裝后立即執行.
腳本內容:

#!/bin/bash 
#by LinuxEye 
#BLOG: http://blog.linuxeye.com 
#系統瘦身 
yum -y groupremove "FTP Server" "Text-based Internet" "Windows File Server" "PostgreSQL Database" "News Server" "DNS Name Server" "Web Server" "Dialup Networking Support" "Mail Server" "Office/Productivity" "Ruby" "Office/Productivity" "Sound and Video" "X Window System" "X Software Development" "Printing Support" "OpenFabrics Enterprise Distribution"  
#安裝依賴包 
yum -y install gcc gcc-c   autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5-devel libidn libidn-devel openssl openssl-devel nss_ldap openldap openldap-devel  openldap-clients openldap-servers libxslt-devel libevent-devel ntp  libtool-ltdl bison libtool vim-enhanced 
#關閉不必要的服務 
chkconfig --list | awk '{print "chkconfig " $1 " off"}' > /tmp/chkconfiglist.sh;/bin/sh /tmp/chkconfiglist.sh;rm -rf /tmp/chkconfiglist.sh         
                 
chkconfig  crond on 
chkconfig  irqbalance on 
chkconfig  network on 
chkconfig  sshd on 
chkconfig  syslog on 
chkconfig  iptables on 
setenforce 0 
sed -i 's/^SELINUX=.*$/SELINUX=disabled/g' /etc/sysconfig/selinux
#i18n
sed -i 's@LANG=.*$@LANG="en_US.UTF-8"@g' /etc/sysconfig/i18n 
#修改啟動模式 
sed -i 's/id:.*$/id:3:initdefault:/g' /etc/inittab  
#關閉不需要的tty 
sed -i 's/3:2345:respawn/#3:2345:respawn/g' /etc/inittab 
sed -i 's/4:2345:respawn/#4:2345:respawn/g' /etc/inittab 
sed -i 's/5:2345:respawn/#5:2345:respawn/g' /etc/inittab 
sed -i 's/6:2345:respawn/#6:2345:respawn/g' /etc/inittab 
sed -i 's/ca::ctrlaltdel/#ca::ctrlaltdel/g' /etc/inittab 
/sbin/init q 
#修改PS1 
echo 'PS1="\[\e[37;40m\][\[\e[32;40m\]\u\[\e[37;40m\]@\h \[\e[35;40m\]\W\[\e[0m\]]\\$ \[\e[33;40m\]"' >> /etc/profile 
#修改shell命令的history記錄個數 
sed -i 's/HISTSIZE=.*$/HISTSIZE=        
                 100/g' /etc/profile 
source /etc/profile 
#記錄每個命令 
mkdir /root/logs 
echo "export PROMPT_COMMAND='{ msg=\$(history 1 | { read x y; echo \$y; });user=\$(whoami); echo \$(date \" %Y-%m-%d %H:%M:%S\"):\$user:\`pwd\`/:\$msg ---- \$(who am i); } >> \$HOME/logs/\`hostname\`.\`whoami\`.history-timestamp'" >> /root/.bash_profile 
#密碼輸錯5次鎖定180s 
sed -i '4a auth        required      pam_tally2.so deny=5 unlock_time=180' /etc/pam.d/system-auth 
#alias設置 
sed -i '7a alias vi=vim' /root/.bashrc  
#調整Linux的最大文件打開數 
echo "* soft nofile 60000" >> /etc/security/limits.conf 
echo "* hard nofile 65535" >> /etc/security/limits.conf 
echo "ulimit -SH 65535" >> /etc/rc.local 
#關閉ipv6 
sed -i 's/NETWORKING_IPV6=.*$/        
                 NETWORKING_IPV6=no/g' /etc/sysconfig/network  
#網路參數調整 
sed -i 's/net.ipv4.tcp_syncookies.*$/net.ipv4.tcp_syncookies = 1/g' /etc/sysctl.conf 
echo 'net.ipv4.tcp_tw_reuse = 1' >> /etc/sysctl.conf 
echo 'net.ipv4.tcp_tw_recycle = 1' >> /etc/sysctl.conf 
echo 'net.ipv4.ip_local_port_range = 1024 65000' >> /etc/sysctl.conf 
sysctl -p 
#校正時間 
/usr/sbin/ntpdate ntp.api.bz 
echo '/usr/sbin/ntpdate ntp.api.bz > /dev/null 2>&1' > /var/spool/cron/root;chmod 600 /var/spool/cron/root 
/sbin/service crond restart 
#iptables配置 
sed -i 's/IPTABLES_MODULES="ip_conntrack_netbios_ns"/#IPTABLES_MODULES="ip_conntrack_netbios_ns"/g' /etc/sysconfig/iptables-config         
                 
cat > /etc/sysconfig/iptables << EOF 
# Firewall configuration written by system-config-securitylevel 
# Manual customization of this file is not recommended. 
*filter 
:INPUT DROP [0:0] 
:FORWARD ACCEPT [0:0] 
:OUTPUT ACCEPT [0:0] 
-A INPUT -i lo -j ACCEPT 
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT 
-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT 
-A INPUT -p icmp -m limit --limit 100/sec --limit-burst 100 -j ACCEPT 
-A INPUT -p icmp -m limit --limit 1/s --limit-burst 10 -j ACCEPT 
# -A INPUT -p udp -m udp --dport 20 -j ACCEPT 
COMMIT 
EOF 
/sbin/service atd start 
echo "/sbin/service iptables stop" | at now 3minutes 
/sbin/service iptables restart 

本文出自 「linux運維筆記」 博客,請務必保留此出處http://linuxeye.blog.51cto.com/4371937/772738