RHEL6和RHEL7的变化

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  date	timedatectl  date
Synchronize time and date	ntpdate  /etc/ntp.conf	ntpdate  /etc/chrony.conf
Configure keyboard	system-config-keyboard	localectl

Jobs and services

Task	RHEL6	RHEL7
List all services	chkconfig  ls /etc/init.d/	systemctl -at service  ls /{usr/lib,etc}/systemd/system/*.service
List running services	service �Cstatus-all	systemctl -t service �Cstate=active
Start/stop a service	service name start  service name stop	systemctl start name.service  systemctl stop name.service
Enable/disable a service	chkconfig name on  chkconfig name off	systemctl enable name.service  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 �Cadd	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 groupinstall	yum install  yum group install
View software info	yum info  yum groupinfo	yum info  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  lvextend  resize2fs	vgextend  lvextend  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