只要6步驟就可以讓你的CentOS系統內容更加精簡最佳化

第一步、刪除不必要的內建軟體包

yum remove Deployment_Guide-en-US finger cups-libs cups ypbind yum remove bluez-libs desktop-file-utils ppp rp-pppoe wireless-tools irda-utils yum remove sendmail* samba* talk-server finger-server bind* xinetd yum remove nfs-utils nfs-utils-lib rdate fetchmail eject ksh mkbootdisk mtools yum remove syslinux tcsh startup-notification talk apmd rmt dump setserial portmap yp-tools yum groupremove "Mail Server" "Games and Entertainment" "X Window System" "X Software Development" yum groupremove "Development Libraries" "Dialup Networking Support" yum groupremove "Games and Entertainment" "Sound and Video" "Graphics" "Editors" yum groupremove "Text-based Internet" "GNOME Desktop Environment" "GNOME Software Development"

第二步、升級centos系統

yum update #更新系統 yum clean all #清理全部快取檔案

第三步、禁用seLinux

sestatus #先執行看seLinux狀態，如果不是disabled，就需要執行下面步驟，否則不要執行 vi /etc/selinux/config SELINUX=disabled #禁用SeLinux SELINUX=enforcing #使用SeLinux

第四步、禁止IPV6（執行後需要reboot重啟）

vi /etc/modprobe.conf  #開啟檔案，把下面兩行加到最後 alias net-pf-10 off alias ipv6 off

第五步、初始化防火牆

touch /etc/sysconfig/iptables iptables -F iptables -X iptables -Z service iptables save service iptables restart

第六步、禁止無用服務

#! /bin/bash service acpid off service atd stop service auditd stop service avahi-daemon stop service avahi-dnsconfd stop service bluetooth stop service conman stop service cpuspeed stop service cups stop service dnsmasq stop service dund stop service firstboot stop service hidd stop service httpd stop service ibmasm stop service ip6tables stop service irda stop service kdump stop service lm_sensors stop service mcstrans stop service messagebus stop service microcode_ctl stop service netconsole stop service netfs stop service netplugd stop service nfs stop service nfslock stop service nscd stop service ntpd stop service oddjobd stop service pand stop service pcscd stop service portmap stop service psacct stop service rdisc stop service restorecond stop service rpcgssd stop service rpcidmapd stop service rpcsvcgssd stop service saslauthd stop service sendmail stop service setroubleshoot stop service smb stop service vncserver stop service winbind stop service wpa_supplicant stop service xfs stop service ypbind stop service yum-updatesd stop chkconfig acpid off chkconfig atd off chkconfig auditd off chkconfig avahi-daemon off chkconfig avahi-dnsconfd off chkconfig bluetooth off chkconfig conman off chkconfig cpuspeed off chkconfig cups off chkconfig dnsmasq off chkconfig dund off chkconfig firstboot off chkconfig hidd off chkconfig httpd off chkconfig ibmasm off chkconfig ip6tables off chkconfig irda off chkconfig kdump off chkconfig lm_sensors off chkconfig mcstrans off chkconfig messagebus off chkconfig microcode_ctl off chkconfig netconsole off chkconfig netfs off chkconfig netplugd off chkconfig nfs off chkconfig nfslock off chkconfig nscd off chkconfig ntpd off chkconfig oddjobd off chkconfig pand off chkconfig pcscd off chkconfig portmap off chkconfig psacct off chkconfig rdisc off chkconfig restorecond off chkconfig rpcgssd off chkconfig rpcidmapd off chkconfig rpcsvcgssd off chkconfig saslauthd off chkconfig sendmail off chkconfig setroubleshoot off chkconfig smb off chkconfig vncserver off chkconfig winbind off chkconfig wpa_supplicant off chkconfig xfs off chkconfig ypbind off chkconfig yum-updatesd off

這樣通過上述6步驟，就可以完成對centos精簡和最佳化。