centos 7.3 设置静态IP或ping
作者：互联网
原文链接：https://blog.csdn.net/zl570932980/article/details/78260951
首先把虚拟机配置为桥接模式，然后开启
再你打算修改虚拟机IP之前首先ping下127.0.0.1看看网卡是否是好的（如果127.0.0.1都ping不通的话，那网卡就是坏的了…）
[root@localhost /]# ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.106 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.095 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.097 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.073 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.058 ms
64 bytes from 127.0.0.1: icmp_seq=6 ttl=64 time=0.097 ms
64 bytes from 127.0.0.1: icmp_seq=7 ttl=64 time=0.375 ms
^C64 bytes from 127.0.0.1: icmp_seq=8 ttl=64 time=0.733 ms
64 bytes from 127.0.0.1: icmp_seq=9 ttl=64 time=0.095 ms
64 bytes from 127.0.0.1: icmp_seq=10 ttl=64 time=0.102 ms
^C
--- 127.0.0.1 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9006ms
rtt min/avg/max/mdev = 0.058/0.183/0.733/0.202 ms
[root@localhost /]#
在设置静态IP之前可以先看下自己当前开启的网卡：
[root@localhost /]# ifconfig
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.121 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::9474:4a7c:66fd:8d90 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:e5:c1:96 txqueuelen 1000 (Ethernet)
RX packets 4436 bytes 372786 (364.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 871 bytes 147085 (143.6 KiB)
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 1 (Local Loopback)
RX packets 16 bytes 1320 (1.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1320 (1.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost /]#
1.设置网卡ens32静态IP
[root@localhost /]# cd /etc/sysconfig/network-scripts/ #注意点cd与“/etc”之间的空格
[root@localhost network-scripts]#
[root@localhost network-scripts]# ls #查看network-scripts下的所有文件
ifcfg-ens32 ifdown-eth ifdown-isdn ifdown-sit ifup ifup-ib ifup-plip ifup-routes ifup-tunnel network-functions-ipv6
ifcfg-lo ifdown-ib ifdown-post ifdown-Team ifup-aliases ifup-ippp ifup-plusb ifup-sit ifup-wireless
ifdown ifdown-ippp ifdown-ppp ifdown-TeamPort ifup-bnep ifup-ipv6 ifup-post ifup-Team init.ipv6-global
ifdown-bnep ifdown-ipv6 ifdown-routes ifdown-tunnel ifup-eth ifup-isdn ifup-ppp ifup-TeamPort network-functions
[root@localhost network-scripts]#
使用vi进行编辑
[root@localhost network-scripts]# vi ifcfg-ens32
【点击i 进行插入 完成之后Esc 并输入:wq 进行保存】
[root@localhost network-scripts]# vi ifcfg-ens32
TYPE="Ethernet"
BOOTPROTO="static" #启用静态IP地址
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"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens32"
UUID="17e371b3-5107-4d72-a58f-e8f71396fd68"
DEVICE="ens32"
ONBOOT="yes"
IPADDR=“192.168.0.121”
GATEWAY=“192.168.0.1”
修改：
BOOTPROTO=“static” #启用静态IP地址
加入个：
IPADDR=“192.168.0.121” #设置IP地址
GATEWAY=“192.168.0.1” #设置网关
【注意】设置好后保存！
然后重启网络吧：
[root@localhost ~]# service network restart #重启网络
Restarting network (via systemctl): [ OK ]
[root@localhost ~]#
[root@localhost ~]# ping 192.168.0.107 #ping局域网内的IP正常
PING 192.168.0.107 (192.168.0.107) 56(84) bytes of data.
64 bytes from 192.168.0.107: icmp_seq=1 ttl=64 time=0.759 ms
64 bytes from 192.168.0.107: icmp_seq=2 ttl=64 time=1.07 ms
64 bytes from 192.168.0.107: icmp_seq=3 ttl=64 time=0.615 ms
^C
--- 192.168.0.107 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 0.615/0.816/1.076/0.195 ms
[root@localhost ~]# ping www.baidu.com #ping百度域名还是不行
ping: www.baidu.com: Name or service not known #出现这个错误
ping: www.baidu.com: Name or service not known”错误解决办法
第一步查看ONBOOT：
[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-ens32 ifdown-bnep ifdown-ippp ifdown-post ifdown-sit ifdown-tunnel ifup-bnep ifup-ippp ifup-plip ifup-ppp ifup-Team ifup-wireless network-functions-ipv6
ifcfg-lo ifdown-eth ifdown-ipv6 ifdown-ppp ifdown-Team ifup ifup-eth ifup-ipv6 ifup-plusb ifup-routes ifup-TeamPort init.ipv6-global
ifdown ifdown-ib ifdown-isdn ifdown-routes ifdown-TeamPort ifup-aliases ifup-ib ifup-isdn ifup-post ifup-sit ifup-tunnel network-functions
[root@localhost network-scripts]# vi ifcfg-ens32
TYPE="Ethernet"
BOOTPROTO="static" #启用静态IP地址
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"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens32"
UUID="17e371b3-5107-4d72-a58f-e8f71396fd68"
DEVICE="ens32"
ONBOOT="yes"
IPADDR=“192.168.0.121”
GATEWAY=“192.168.0.1”
发现ONBOOT=”no”已设置为ONBOOT=”yes”
第二步查看：
ping 命令是属于ICMP协议，ping ip地址有效。若直接ping网址（域名），需要配置DNS。编辑添加nameserver如下：
vi /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
【注意】设置完保存！
再ping
[root@localhost /]# ping www.baidu.com
PING www.a.shifen.com (61.135.169.121) 56(84) bytes of data.
64 bytes from 61.135.169.121 (61.135.169.121): icmp_seq=1 ttl=55 time=16.9 ms
64 bytes from 61.135.169.121 (61.135.169.121): icmp_seq=2 ttl=55 time=25.6 ms
64 bytes from 61.135.169.121 (61.135.169.121): icmp_seq=3 ttl=55 time=21.6 ms
64 bytes from 61.135.169.121 (61.135.169.121): icmp_seq=4 ttl=55 time=17.2 ms
64 bytes from 61.135.169.121 (61.135.169.121): icmp_seq=5 ttl=55 time=22.0 ms
^C
--- www.a.shifen.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4010ms
rtt min/avg/max/mdev = 16.901/20.716/25.652/3.277 ms
[root@localhost /]#
到这里就解决了！
标签：centos,IP,time,ping,bytes,ifup,64,ms,ifdown 来源： https://blog.csdn.net/Andy2019/article/details/100174258