CentOS 6.0 在大家翘首以盼中姗姗来迟,但官方发布的DVD太过于庞大,很多组件其实在日常的生产环境中并用不上,所以基于此种情况,在这里我们就来对官方发布的DVD进行瘦身,只安装我们需要的组件,并实现自动安装,安装完毕后再对系统做基本的初始化,这样在生产环境中需要批量布署服务器的时候,显的效率非常高
1、定制安装系统,选择常用的组件
2、安装制作发行版所需的基本软件包
yum –y install createrepo mkisofs
3、生成安装系统所需的rpm文件列表
awk ‘/Installing/{print $2}’ install.log |sed ‘s/^[0-9]*://g’ >/root/packages.list
4、创建定制工作目录
mkdir -p /mnt/cdrom
mkdir -p /data/OS
mount /dev/cdrom /mnt/cdrom
rsync –a –exclude=Packages /mnt/cdrom /data/OS
mkdir /data/OS/Packages
5、复制精简后的RPM包
vi /data/cprmps.sh #创建自动复制RPM包脚本
- #!/bin/bash
- DEBUG=0
- CentOS_DVD=/mnt/cdrom
- ALL_RPMS_DIR=/mnt/cdrom/Packages #源光盘RPM包存放的目录
- KOS_RPMS_DIR=/data/OS/Packages #精简后RPM包存放的目录
- packages_list=/root/packages.list #精简后的RPM包列表
- number_of_packages=`cat $packages_list | wc -l`
- i=1
- while [ $i -le $number_of_packages ] ; do
- line=`head -n $i $packages_list | tail -n -1`
- name=`echo $line | awk ‘{print $1}’`
- version=`echo $line | awk ‘{print $3}’ | cut -f 2 -d :`
- if [ $DEBUG -eq “1” ] ; then
- echo $i: $line
- echo $name
- echo $version
- fi
- if [ $DEBUG -eq “1” ] ; then
- ls $ALL_RPMS_DIR/$name-$version*
- if [ $? -ne 0 ] ; then
- echo “cp $ALL_RPMS_DIR/$name-$version* ”
- fi
- else
- echo “cp $ALL_RPMS_DIR/$name-$version* $KOS_RPMS_DIR/”
- cp $ALL_RPMS_DIR/$name-$version* $KOS_RPMS_DIR/
- # in case the copy failed
- if [ $? -ne 0 ] ; then
- echo “cp $ALL_RPMS_DIR/$name-$version* ”
- cp $ALL_RPMS_DIR/$name* $KOS_RPMS_DIR/
- fi
- fi
- i=`expr $i + 1`
- done
chmod +x cprpm.sh
./cprpm.sh
6、配置kickstart脚本
vi /data/OS/isolinux/kerry.cfg
- # Kickstart file automatically generated by anaconda.
- #Install OS instead of upgrade
- install
- #Use text mode install
- text
- #Use CDROM installation media
- cdrom
- lang en_US.UTF-8
- keyboard us
-
- #Skip the X Configuration
- skipx
- #Network information
- #network –device eth0 –onboot yes –bootproto static –ip 192.168.9.226 –netmask 255.255.255.0 –gateway 192.168.9.1 –nameserver 192.168.9.1 –noipv6 –hostname kerry-web-001
- network –bootproto dhcp –noipv6 –onboot=yes –hostname kerry-web-001
- #root — 1q2w3e
- rootpw –iscrypted $6$ZVQx8trb4JB693IS$tdwYvbnrNLgAv9xyQTMm2/0IV5pmZWwa0dD.GWh69/LK0Ls4aUXUl3xJiPRyzVuRZDUdEzw0h26zRS5KOdbBl1
- firewall –disabled
- #System authorization information
- authconfig –enableshadow –enablemd5
- selinux –disabled
- timezone –utc Asia/Shanghai
- #System bootloader configuration
- bootloader –location=mbr
- #Clear the Master Boot Record
- zerombr yes
-
- # The following is the partition information you requested
- # Note that any partitions you deleted are not expressed
- # here so unless you clear all partitions first, this is
- # not guaranteed to work
-
- #Partition clearing information
- clearpart –all –initlabel
- part /boot –fstype ext4 –size=200 –asprimary
- part / –fstype ext4 –size=10000
- part swap –size=4096
- part /data –fstype ext4 –size=1 –grow
-
-
- #— Reboot the host after installation is done
- reboot
-
- %packages
- @base
- @core
- @development
- @server-policy
- sgpio
- nmap
- iptraf
- ntp
-
- %post –nochroot
- # Mount CDROM
- mkdir -p /mnt/cdrom
- mount -r -t iso9660 /tmp/cdrom /mnt/cdrom
- cp /mnt/cdrom/ipmod.tar.gz /mnt/sysimage/tmp/ipmod.tar.gz > /dev/null
- cd /mnt/sysimage/tmp/
- tar -zxvf ipmod.tar.gz > /dev/null
- cp -R /mnt/sysimage/tmp/ipmod/* /mnt/sysimage/root/ > /dev/null 2>/dev/null
-
- cp -R /mnt/sysimage/tmp/etc/* /mnt/sysimage/etc/ > /dev/null 2>/dev/null
- cp -R /mnt/sysimage/tmp/usr/* /mnt/sysimage/usr/ > /dev/null 2>/dev/null
- cp -R /mnt/sysimage/tmp/var/* /mnt/sysimage/var/ > /dev/null 2>/dev/null
- cp -R /mnt/sysimage/tmp/boot/* /mnt/sysimage/boot/ > /dev/null 2>/dev/null
- cp -R /mnt/sysimage/tmp/sbin/* /mnt/sysimage/sbin/ > /dev/null 2>/dev/null
-
- umount /mnt/cdrom
-
- %post
- #vim syntax on
- sed -i “8 s/^/alias vi=‘vim’/” /root/.bashrc 2>/dev/null
- echo ‘syntax on’ > /root/.vimrc 2>/dev/null
-
- #init_ssh
- ssh_cf=“/etc/ssh/sshd_config”
- sed -i -e ’74 s/^/#/’ -i -e ’76 s/^/#/’ $ssh_cf
- sed -i “s/#UseDNS yes/UseDNS no/” $ssh_cf
-
- #client
- sed -i -e ’44 s/^/#/’ -i -e ’48 s/^/#/’ $ssh_cf
-
- # Remove the ISO File translation files
- find / -name TRANS.TBL -exec rm {} \; /dev/null 2>/dev/null
-
- # Remove some unneeded services
- #——————————————————————————–
- cat << EOF
- +————————————————————–+
- | === Welcome to Tunoff services === |
- +————————————————————–+
- EOF
- #———————————————————————————
- for i in `ls /etc/rc3.d/S*`
- do
- CURSRV=`echo $i|cut -c 15-`
- echo $CURSRV
- case $CURSRV in
- crond | irqbalance | microcode_ctl | network | random | sshd | syslog | local )
- echo “Base services, Skip!”
- ;;
- *)
- echo “change $CURSRV to off”
- chkconfig –level 235 $CURSRV off
- service $CURSRV stop
- ;;
- esac
- done
-
- # file descriptors
- ulimit -HSn 65535
-
- echo -ne ”
- * soft nofile 65536
- * hard nofile 65536
- ” >>/etc/security/limits.conf
-
- #set sysctl
- true > /etc/sysctl.conf
- cat >> /etc/sysctl.conf << EOF
- net.ipv4.ip_forward = 0
- net.ipv4.conf.default.rp_filter = 1
- net.ipv4.conf.default.accept_source_route = 0
- kernel.sysrq = 0
- kernel.core_uses_pid = 1
- net.ipv4.tcp_syncookies = 1
- kernel.msgmnb = 65536
- kernel.msgmax = 65536
- kernel.shmmax = 68719476736
- kernel.shmall = 4294967296
- net.ipv4.tcp_max_tw_buckets = 6000
- net.ipv4.tcp_sack = 1
- net.ipv4.tcp_window_scaling = 1
- net.ipv4.tcp_rmem = 4096 87380 4194304
- net.ipv4.tcp_wmem = 4096 16384 4194304
- net.core.wmem_default = 8388608
- net.core.rmem_default = 8388608
- net.core.rmem_max = 16777216
- net.core.wmem_max = 16777216
- net.core.netdev_max_backlog = 262144
- net.core.somaxconn = 262144
- net.ipv4.tcp_max_orphans = 3276800
- net.ipv4.tcp_max_syn_backlog = 262144
- net.ipv4.tcp_timestamps = 0
- net.ipv4.tcp_synack_retries = 1
- net.ipv4.tcp_syn_retries = 1
- net.ipv4.tcp_tw_recycle = 1
- net.ipv4.tcp_tw_reuse = 1
- net.ipv4.tcp_mem = 94500000 915000000 927000000
- net.ipv4.tcp_fin_timeout = 1
- net.ipv4.tcp_keepalive_time = 1200
- net.ipv4.ip_local_port_range = 1024 65535
- EOF
-
- /sbin/sysctl -p
-
- #close ctrl+alt+del
- sed -i “s/ca::ctrlaltdel:\/sbin\/shutdown -t3 -r now/#ca::ctrlaltdel:\/sbin\/shutdown -t3 -r now/” /etc/inittab
-
- #set purview
- chmod 600 /etc/passwd
- chmod 600 /etc/shadow
- chmod 600 /etc/group
- chmod 600 /etc/gshadow
7、生成comps.xml
cd /data/OS
createrepo –g repodata/*-comps.xml /data/OS/
8、让系统从kickstart配置启动安装
vi /data/OS/isolinux/isolinux.cfg
default auto
label auto
kernel vmlinuz
append ks=cdrom:/isolinux/kerry.cfg initrd=initrd.img
9、生成ISO文件
cd /data/OS
declare -x discinfo=`head -1 .discinfo`
createrepo -u “media://$discinfo” -g repodata/*-comps.xml /data/OS/
mkisofs -R -J -T -r -l -d -joliet-long -allow-multidot -allow-leading-dots -no-bak -o /data/KerryOS-1.0-i386.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table /data/OS
10、生成MD5检验码
/usr/bin/implantisomd5 /data/KerryOS-1.0-i386.iso