CentOS 7とCentOS 6の違いは何ですか?
CentOS 7 vs CentOS 6の違い
(1)デスクトップシステム[CentOS6] GNOME 2.x
[CentOS7] GNOME 3.x(GNOME Shell)
(2)ファイルシステム[CentOS6] ext4
[CentOS7] xfs
(3)カーネルバージョン[CentOS6] 2.6.x-x
[CentOS7] 3.10.x-x
(4)ローダの起動[CentOS6] GRUB Legacy (+efibootmgr)
[CentOS7] GRUB2
(5)ファイアウォール[CentOS6] iptables
[CentOS7] firewalld
(6)デフォルトデータベース[CentOS6] MySQL
[CentOS7] MariaDB
(7)ファイル構造[CentOS 6]/bin,/sbin,/lib,and/lib 64在/下
[CentOS 7]/bin,/sbin,/lib,and/lib 64を/usr下に移動
(8)ホスト名[CentOS6] /etc/sysconfig/network
[CentOS7] /etc/hostname
(9)時間同期[CentOS6]
$ ntp
$ ntpq -p
[CentOS7]
$ chrony
$ chronyc sources
(10)修正時間[CentOS6]
$ vim /etc/sysconfig/clock
ZONE="Asia/Tokyo"
UTC=fales
$ sudo ln -s /usr/share/zoneinfo/Asia/Tokyo /etc/localtime
[CentOS7]
$ timedatectl set-timezone Asia/Tokyo
$ timedatectl status
(11)地域修正[CentOS6]
$ vim /etc/sysconfig/i18n
LANG="ja_JP.utf8"
$ /etc/sysconfig/i18n
$ locale
[CentOS7]
$ localectl set-locale LANG=ja_JP.utf8
$ localectl status
(12)サービス関連1)起動停止
[CentOS6]
$ service service_name start
$ service service_name stop
$ service sshd restart/status/reload
[CentOS7]
$ systemctl start service_name
$ systemctl stop service_name
$ systemctl restart/status/reload sshd
セルフスタート
[CentOS6]
$ chkconfig service_name on/off
[CentOS7]
$ systemctl enable service_name
$ systemctl disable service_name
サービス一覧
[CentOS6]
$ chkconfig --list
[CentOS7]
$ systemctl list-unit-files
$ systemctl --type service
強制停止
[CentOS6]
[CentOS7]
$ systemctl kill --signal=9 sshd
(13)ネットワーク1)ネットワーク情報
[CentOS6]
$ netstat
$ netstat -I
$ netstat -n
[CentOS7]
$ ip n
$ ip -s l
$ ss
2)IPアドレスMACアドレス
[CentOS6]
$ ifconfig -a
[CentOS7]
$ ip address show
3)ルーティング
[CentOS6]
$ route -n
$ route -A inet6 -n
[CentOS7]
$ ip route show
$ ip -6 route show
(14)再開クローズ1)オフ
[CentOS6]
$ shutdown -h now
[CentOS7]
$ poweroff
$ systemctl poweroff
2)再起動
[CentOS6]
$ reboot
$ shutdown -r now
[CentOS7]
$ reboot
$ systemctl reboot
3)シングルユーザモード
[CentOS6]
$ init S
[CentOS7]
$ systemctl rescue
4)起動モード
[CentOS6]
[GUICUI]
$ vim /etc/inittab
id:3:initdefault:
[CUIGUI]
$ startx
[CentOS7]
[GUICUI]
$ systemctl isolate multi-user.target
[CUIGUI]
$systemctl isolate graphical.target
デフォルト
$ systemctl set-default graphical.target
$ systemctl set-default multi-user.target
現在
$ systemctl get-default