RHEL 6 和 RHEL 7 之间的变化（部分内容）

Administrative command and config-file changes
System Basics
Task	RHEL6	RHEL7
View RH subscription information	/etc/sysconfig/rhn/systemid  subscription-manager identity	subscription-manager identity
Configure RH subscription	rhn_register  rhnreg_ks  subscription-manager	subscription-manager14  rhn_register15
Basic Configuration
Task	RHEL6	RHEL7
Graphical configuration tools	system-config-*	gnome-control-center
Configure network	system-config-network	nmcli  nmtui  nm-connection-editor
Configure system language	system-config-language	localectl
Configure system time and date	system-config-date	timedatectl
	date	date
Synchronize time and date	ntpdate	ntpdate
	/etc/ntp.conf	/etc/chrony.conf
Configure keyboard	system-config-keyboard	localectl
Jobs and services
Task	RHEL6	RHEL7
List all services	chkconfig	systemctl -at service
	ls /etc/init.d/	ls /{usr/lib,etc}/systemd/system/*.service
List running services	service –status-all	systemctl -t service –state=active
Start/stop a service	service name start	systemctl start name.service
	service name stop	systemctl stop name.service
Enable/disable a service	chkconfig name on	systemctl enable name.service
	chkconfig name off	systemctl disable name.service
Check if service enabled	chkconfig name	systemctl is-enabled name
View service status	service name status	systemctl status name.service
Create service file or change config	chkconfig –add	systemctl daemon-reload
View runlevel/target	runlevel	systemctl get-default
Change runlevel/target	init runlevel	systemctl isolate name.target
		init runlevel
Configure logging	/etc/rsyslog.conf	/etc/rsyslog.conf
		/etc/rsyslog.d/*.conf
		/var/log/journal/
		/etc/systemd/journald.conf
View logs	/var/log/	/var/log/
		journalctl
Kernel, boot, and hardware
Task	RHEL6	RHEL7
Bypass root password prompt at boot	append 1 or s or init=/bin/bash to kernel cmdline	append rd.break or init=/bin/bash to kernel cmdline
Shut down system	shutdown	systemctl shutdown
Power off system	poweroff	systemctl poweroff
Halt system	halt	systemctl halt
Reboot system	reboot	systemctl reboot
Configure default runlevel/target	/etc/inittab	systemctl set-default
Configure GRUB bootloader	/boot/grub/grub.conf	/etc/default/grub
		grub2-mkconfig
		grub-set-default
Software management
Task	RHEL6	RHEL7
Install software	yum install	yum install
	yum groupinstall	yum group install
View software info	yum info	yum info
	yum groupinfo	yum group info
File systems, volumes, and disks
Task	RHEL6	RHEL7
Create/modify disk partitions	fdisk  parted	fdisk  parted  gdisk
Default file system	ext4	xfs
Enlarge volumes formatted with default filesystem	vgextend	vgextend
	lvextend	lvextend
	resize2fs	xfs_growfs
Networking
Task	RHEL6	RHEL7
Configure name resolution	/etc/hosts  /etc/resolv.conf	/etc/hosts
		/etc/resolv.conf
		nmcli con mod
Configure hostname	/etc/sysconfig/network	/etc/hostname
		hostnamectl
		nmtui
View network interface info	ip addr  ifconfig  brctl	ip addr
		nmcli dev show
		teamdctl
		brctl
		bridge
Configure network interface	/etc/sysconfig/network-scripts/ifcfg-*	/etc/sysconfig/network-scripts/ifcfg-*
		nmcli con [add|mod|edit]
		nmtui
		nm-connection-editor
Configure firewall	iptables & ip6tables  /etc/sysconfig/ip*tables  system-config-firewall	firewall-cmd  firewall-config
View ports/sockets	netstat  ss lsof	ss  lsof