1. VM網(wǎng)絡(luò)設(shè)置

圖1.png

點(diǎn)擊NAT設(shè)置

圖2

記住網(wǎng)關(guān)和子網(wǎng)ip，后面會(huì)用

2. CentOs網(wǎng)絡(luò)設(shè)置

[root@localhost download]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-ens33  ifdown-eth   ifdown-post    ifdown-Team      ifup-aliases  ifup-ipv6   ifup-post    ifup-Team      init.ipv6-global
ifcfg-lo     ifdown-ippp  ifdown-ppp     ifdown-TeamPort  ifup-bnep     ifup-isdn   ifup-ppp     ifup-TeamPort  network-functions
ifdown       ifdown-ipv6  ifdown-routes  ifdown-tunnel    ifup-eth      ifup-plip   ifup-routes  ifup-tunnel    network-functions-ipv6
ifdown-bnep  ifdown-isdn  ifdown-sit     ifup             ifup-ippp     ifup-plusb  ifup-sit     ifup-wireless

用vim打開 ifcfg-ens33

重啟網(wǎng)絡(luò)模塊

service network restart

3. 檢測(cè)網(wǎng)絡(luò)是否配置成功

ping百度

[root@localhost network-scripts]# ping baidu.com
PING baidu.com (220.181.57.216) 56(84) bytes of data.
64 bytes from 220.181.57.216 (220.181.57.216): icmp_seq=1 ttl=128 time=18.5 ms
64 bytes from 220.181.57.216 (220.181.57.216): icmp_seq=2 ttl=128 time=18.7 ms
64 bytes from 220.181.57.216 (220.181.57.216): icmp_seq=3 ttl=128 time=17.7 ms

查看ip

此命令需要先安裝net工具包yum install net-tools -y

[root@localhost network-scripts]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.27.132  netmask 255.255.255.0  broadcast 192.168.27.255
        inet6 fe80::99b3:c79:5377:c3fe  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:7b:59:07  txqueuelen 1000  (Ethernet)
        RX packets 288077  bytes 405462136 (386.6 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14968  bytes 2189388 (2.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 83  bytes 8297 (8.1 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 83  bytes 8297 (8.1 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

更換yum源

CentOS 7.x 安裝阿里yum源

安裝vim

yum install vim -y

4. SSH工具連接

安裝openssh-server

yum install openssh-server -y

開放22端口或者關(guān)閉防火墻(二選一)

開放端口

firewall-cmd --zone=public --add-port=22/tcp --permanent
其中：
–zone #作用域
–add-port=80/tcp #添加端口，格式為：端口/通訊協(xié)議
–permanent #永久生效，沒有此參數(shù)重啟后失效

關(guān)閉防火墻

//臨時(shí)關(guān)閉
systemctl stop firewalld
//禁止開機(jī)啟動(dòng)
systemctl disable firewalld

關(guān)閉SELinux

#臨時(shí)關(guān)閉
setenforce 0
#永久關(guān)閉
vi /etc/selinux/config

開始連接

我用的是XShell工具

什么？ssh還連接不上？

在VM里還原默認(rèn)網(wǎng)絡(luò)配置，然后注意把NAT模式的子網(wǎng)ip也對(duì)應(yīng)做修改。