Linux system-Centos7 installation tutorial

Installed image file version

CentOS-7-x86_64-DVD-1511

Downloads from major websites

After creating the virtual machine, put the image file into the VM DVD drive

Turn on the virtual machine

Select Install CentOS 7 to install

Carriage return

Select the installation language (the language of the installation process is not the language of the system after installation)

Select disk

System installation is best to use minimal installation, and the required software packages are selected

At the same time, you can set the machine name and configure the network

After completion, click Start installation to proceed to the next installation step

Set the password of the administrator root

After the installation process is complete, choose to restart the system

Enter the user and password to log in, and the entire installation process is over

After logging in, I found that the ifconfig command cannot be used. The result is that the net-tools.x86_64 package is not installed. Well, I can only install it with yum install

[ root@centos7 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE="Ethernet"
BOOTPROTO="static"
IPADDR=192.168.1.218
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=218.108.248.200
DEFROUTE="yes"
PEERDNS="yes"
PEERROUTES="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eth0"
UUID="0fdc93a8-ec13-4fbe-90f3-bbfa4b83e514"
DEVICE="eno16777736"
ONBOOT="yes""/etc/sysconfig/network-scripts/ifcfg-eth0" 20L, 406C written

After configuring the address and DNS information, you can connect to the network normally. In order to facilitate the SSH connection, it is necessary to configure a fixed IP

[ root@centos7 ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
inet 192.168.1.218  netmask 255.255.255.0  broadcast 192.168.1.255
inet6 fe80::20c:29ff:fee0:b1d3  prefixlen 64  scopeid 0x20<link>
ether 00:0c:29:e0:b1:d3  txqueuelen 1000(Ethernet)
RX packets 925  bytes 639103(624.1 KiB)
RX errors 0  dropped 0  overruns 0  frame 0
TX packets 472  bytes 59555(58.1 KiB)
TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

After the address configuration is complete, you can configure the yum source

[ root@centos7 yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
[ root@centos7 yum.repos.d]# ll
total 32-rw-r--r--.1 root root 1572 May 182015 CentOS7-Base-163.repo
- rw-r--r--.1 root root 1664 Dec  92015 CentOS-Base.repo
- rw-r--r--.1 root root 1309 Dec  92015 CentOS-CR.repo
- rw-r--r--.1 root root  649 Dec  92015 CentOS-Debuginfo.repo
- rw-r--r--.1 root root  290 Dec  92015 CentOS-fasttrack.repo
- rw-r--r--.1 root root  630 Dec  92015 CentOS-Media.repo
- rw-r--r--.1 root root 1331 Dec  92015 CentOS-Sources.repo
- rw-r--r--.1 root root 1952 Dec  92015 CentOS-Vault.repo
[ root@centos7 yum.repos.d]# mv CentOS-Base.repo CentOS-Base.repo.1117[root@centos7 yum.repos.d]# mv CentOS7-Base-163.repo CentOS-Base.repo