CentOS之7与6的区别1

centos7和centos6的区别

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百家号04-0403:26

最近发的文章,有人咨询我,说为啥不用centos7,而用centos6,这个跟个人习惯和生产环境元素决定的。centos7和6变化的就很大的。我收集了一些区别,给大家看看。

注意:生产环境推荐centos6.个人学习尝鲜可以7.

(1)桌面系统

[centos6] GNOME 2.x

[centos7] GNOME 3.x(GNOME Shell)

(2)文件系统

[centos6] ext4

[centos7] xfs

(3)内核版本

[centos6] 2.6.x-x

[centos7] 3.10.x-x

(4)启动加载器

[centos6] GRUB Legacy (+efibootmgr)

[centos7] GRUB2

(5)防火墙

[centos6] iptables

[centos7] firewalld

(6)默认数据库

[centos6] MySQL

[centos7] MariaDB

(7)文件结构

[centos6] /bin, /sbin, /lib, and /lib64在/下

[centos7] /bin, /sbin, /lib, and /lib64移到/usr下

(8)主机名

[centos6] /etc/sysconfig/network

[centos7] /etc/hostname

(9)时间同步

[centos6]

$ ntp

$ ntpq -p

[centos7]

$ chrony

$ chronyc sources

(10)修改时间

$ vim /etc/sysconfig/clock

ZONE=”Asia/Tokyo”

UTC=fales

$ sudo ln -s /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

$ timedatectl set-timezone Asia/Tokyo

$ timedatectl status

(11)修改地区

$ vim /etc/sysconfig/i18n

LANG=”ja_JP.utf8″

$ /etc/sysconfig/i18n

$ locale

$ localectl set-locale.utf8

$ localectl status

(12)服务相关

1)启动停止

$ service service_name start

$ service service_name stop

$ service sshd restart/status/reload

$ systemctl start service_name

$ systemctl stop service_name

$ systemctl restart/status/reload sshd

自启动

$ chkconfig service_name on/off

$ systemctl enable service_name

$ systemctl disable service_name

服务一览

$ chkconfig –list

$ systemctl list-unit-files

$ systemctl –type service

强制停止

$ kill -9

$ systemctl kill –signal=9 sshd

(13)网络

1)网络信息

$ netstat

$ netstat -I

$ netstat -n

$ ip n

$ ip -s l

$ ss

2)IP地址MAC地址

$ ifconfig -a

$ ip address show

3)路由

$ route -n

$ route -A inet6 -n

$ ip route show

$ ip -6 route show

(14)重启关闭

1)关闭

$ shutdown -h now

$ poweroff

$ systemctl poweroff

2)重启

$ reboot

$ shutdown -r now

$ systemctl reboot

3)单用户模式

$ init S

$ systemctl rescue

4)启动模式

[GUICUI]

$ vim /etc/inittab

id:3:initdefault:

[CUIGUI]

$ startx

$ systemctl isolate multi-user.target

$systemctl isolate graphical.target

默认

$ systemctl set-default graphical.target

$ systemctl set-default multi-user.target

当前

$ systemctl get-default

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