Centos7 配置网络

/*
    Centos7 的网络 不能够用ifconfig获取，须要安装包

因此 。*/

//查看ip
[root@master ~]# ip a

/* Centos7 的网卡名字与 Centos6有区别，要注意！*/

//获取网卡ip
[root@master ~]# dhclient + 网卡名字

/*若是配置了两张网卡，极可能第二张没办法获取，由于进程一直存在。

    因此咱们先获取一张，而后去到远程链接。 */

PS： 在Centos7 ，没有下载包也没有 kill这个功能，因此若是要从新再获取ip ，能够使用 [ dhclient -r ] 删除全部获取的ip

PS2: 在VMware的窗口， 菜单 --〉 编辑 --〉虚拟网络编辑器 --〉 能够查看到咱们网卡的“范围” --〉能够根据这个“范围”来定咱们的ip

 

/* 远程链接太慢 */

[root@master ~]# vi /etc/ssh/sshd_config
//find “UseDNS” --〉改为
#UseDNS yes --> change --> UseDNS no

//restart sshd
[root@master ~]# systemctl restart sshd

/* 先修改第一张网卡的配置文件 */

[root@master network-scripts]# vi ifcfg-eno33554960
//改为
HWADDR=00:0C:29:93:D2:0C
TYPE=Ethernet
BOOTPROTO=none
AME=eno33554960
UUID=03954cb0-006a-479f-bee4-fb932fc40df3
ONBOOT=yes
IPADDR=192.168.238.128
NETMASK=255.255.255.0


/* 再修改第二张网卡的配置文件 */

[root@master network-scripts]# vi ifcfg-eno16777736
//改为
HWADDR=00:0C:29:93:D2:02
TYPE=Ethernet
BOOTPROTO=static
#DEFROUTE=yes
PEERDNS=no  #这里写了no，下面咱们则不须要写DNS
#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=eno16777736
UUID=b0c78a01-8dc6-4883-be07-7e237076a6ce
ONBOOT=yes
IPADDR=192.168.216.120
NETMASK=255.255.255.0
GATEWAY=192.168.216.2

//重启网络
[root@master network-scripts]# systemctl restart network
[root@master network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:93:d2:02 brd ff:ff:ff:ff:ff:ff
    inet 192.168.216.120/24 brd 192.168.216.255 scope global eno16777736
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe93:d202/64 scope link
       valid_lft forever preferred_lft forever
3: eno33554960: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:93:d2:0c brd ff:ff:ff:ff:ff:ff
    inet 192.168.238.128/24 brd 192.168.238.255 scope global eno33554960
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe93:d20c/64 scope link
       valid_lft forever preferred_lft forever


[root@master network-scripts]# vi /etc/resolv.conf
//修改nameserver
; generated by /usr/sbin/dhclient-script
search localdomain
nameserver 119.29.29.29

//测试是否联网
[root@master network-scripts]# ping www.qq.com
PING www.qq.com (117.135.169.41) 56(84) bytes of data.
64 bytes from . (117.135.169.41): icmp_seq=1 ttl=128 time=5.62 ms
64 bytes from . (117.135.169.41): icmp_seq=2 ttl=128 time=5.56 ms
^C
--- www.qq.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1013ms
rtt min/avg/max/mdev = 5.566/5.594/5.623/0.080 ms