随着VPS主机使用的深化，从开始使用面板工具操作VPS，再到后来的一键安装包，现在基本上能自学自用VPS管理网站/备份网站维护。但是需要深入的运维还需要时日，比如刚才看到一篇CentOS系统环境精简优化的文章还是值得分享的。但是在操作之前，最好建议在我们安装系统之后操作，而不要在有网站运行之后操作，以免系统出现问题。
第一步、删除不必要的自带软件包
Shell 代码
- 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、升级centos系统
Shell 代码
- yum update #更新系统
- yum clean all #清理全部缓存文件
Shell 代码
- sestatus #先执行看seLinux状态，如果不是disabled，就需要执行下面步骤，否则不要执行
- vi /etc/selinux/config
- SELINUX=disabled #禁用SeLinux
- SELINUX=enforcing #使用SeLinux
第四步、禁止IPV6（执行后需要reboot重启）
Shell 代码
- vi /etc/modprobe.conf #打开文件，把下面两行加到最后
- alias net-pf-10 off
- alias ipv6 off
Shell 代码
- touch /etc/sysconfig/iptables
- iptables -F
- iptables -X
- iptables -Z
- service iptables save
- service iptables restart
Shell 代码
- #! /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
