[1] 修改默认运行级别，默认只启用命令行界面，可以节省资源
如下，修改inittab文件中的默认启动级别，由5改至3。（注意：默认运行级别不要设置为0或6）
各启动级别含义如下：
0 停机，机器关闭。
1 单用户模式，就像Win9x下的安全模式类似。
2 多用户模式，但是没有NFS支持。
3 完整的多用户模式，是标准的运行级。
4 预留，未使用
5 就是X11，进到X Window系统了。
6 为重启，运行init 6机器就会重启。
[root@localhost ~]# vim /etc/inittab # inittab is only used by upstart for the default runlevel. # # ADDING OTHER CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM. # # System initialization is started by /etc/init/rcS.conf # # Individual runlevels are started by /etc/init/rc.conf # # Ctrl-Alt-Delete is handled by /etc/init/control-alt-delete.conf # # Terminal gettys are handled by /etc/init/tty.conf and /etc/init/serial.conf, # with configuration in /etc/sysconfig/init. # # For information on how to write upstart event handlers, or how # upstart works, see init(5), init(8), and initctl(8). # # Default runlevel. The runlevels used are: # 0 - halt (Do NOT set initdefault to this) # 1 - Single user mode # 2 - Multiuser, without NFS (The same as 3, if you do not have networking) # 3 - Full multiuser mode # 4 - unused # 5 - X11 # 6 - reboot (Do NOT set initdefault to this) # id:3:initdefault:
[2] 禁用SELinux
[root@localhost ~]# vi /etc/sysconfig/selinux # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted
修改后重启Linux或使用setenforce 0命令实时禁用SELinux