安裝完CentOS 7 minimal后，無力吐槽，變革之大，發明以前常用的一些呼吁都沒有。
一、常用呼吁安裝
查察anaconda-ks.cfg，本來是沒裝base group的包
[[email protected] ~]# cat anaconda-ks.cfg
#version=RHEL7
# System authorization information
auth --enableshadow --passalgo=sha512
# Use CDROM installation media
cdrom
# Run the Setup Agent on first boot
firstboot --enable
ignoredisk --only-use=sda
# Keyboard layouts
keyboard --vckeymap=us --xlayouts='us'
# System language
lang en_US.UTF-8 --addsupport=zh_CN.UTF-8
# Network information
network --bootproto=dhcp --device=eno16777736 --onboot=off
--ipv6=auto
network --hostname=localhost.localdomain
# Root password
rootpw --iscrypted
$6$Zz5VMf1HPPRm0YRL$QSoaU9pAUApXMj9BXuK5qlUFGAfCv9Y/ylVGUcDYv.lrxfNodTiI/7DO1UR7carvL1EdgwQpuiwDt524f6.GR.
# System timezone
timezone Asia/Chongqing --isUtc --nontp
# System bootloader configuration
bootloader --location=mbr --boot-drive=sda
autopart --type=lvm
# Partition clearing information
clearpart --none --initlabel
%packages
@core # 這里只有core
%end
[[email protected] ~]# yum groupinstall base # 安裝完后ifconfig、service、chkconfig等呼吁就都有了
二、運行級別切換
[[email protected] ~]# cat /etc/inittab #
系統運行級此外配置方法也變革了
# inittab is no longer used when using systemd.
#
# ADDING CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.
#
# Ctrl-Alt-Delete is handled by
/etc/systemd/system/ctrl-alt-del.target
#
# systemd uses 'targets' instead of runlevels. By default, there
are two main targets:
#
# multi-user.target: analogous to runlevel 3
# graphical.target: analogous to runlevel 5
#
# To set a default target, run:
#
# ln -sf /lib/systemd/system/<target name>.target
/etc/systemd/system/default.target
這里寫的很大白了，做個軟鏈修改默認運行級別
[[email protected] system]# ll
/lib/systemd/system/runlevel*.target # 系統0-6 7個運行級別，2 3 4
運行指向同一個文件
lrwxrwxrwx 1 root root 15 Oct 11 03:51
/lib/systemd/system/runlevel0.target -> poweroff.target
lrwxrwxrwx 1 root root 13 Oct 11 03:51
/lib/systemd/system/runlevel1.target -> rescue.target
lrwxrwxrwx 1 root root 17 Oct 11 03:51
/lib/systemd/system/runlevel2.target -> multi-user.target
lrwxrwxrwx 1 root root 17 Oct 11 03:51
/lib/systemd/system/runlevel3.target -> multi-user.target
lrwxrwxrwx 1 root root 17 Oct 11 03:51
/lib/systemd/system/runlevel4.target -> multi-user.target
lrwxrwxrwx 1 root root 16 Oct 11 03:51
/lib/systemd/system/runlevel5.target -> graphical.target
lrwxrwxrwx 1 root root 13 Oct 11 03:51
/lib/systemd/system/runlevel6.target -> reboot.target
三、systemctl打點系統處事
systemctl可以看作是service和chkconfig的組合
|
job |
chkconfig、service | systemctl |
| 處事開機自啟動 | chkconfig --level 3 httpd on | systemctl enable httpd |
| 處事不開機自啟動 | chkconfig --level 3 httpd off | systemctl disable httpd |
|
處事狀態 |
service httpd status |
systemctl status httpd(處事具體信息) systemctl is-active httpd(只顯示是否active)
|
| 所有處事的啟動狀態 | chkconfig --list | systemctl list-units --type=service |
| 啟動處事 | service httpd start | systemctl start httpd |
| 遏制處事 | service httpd stop | systemctl stop httpd |
| 重啟處事 | service httpd restart | systemctl restart httpd |