前言
最近用 VM 虚拟机安装了 Centos7，采用了最新安装模式，现在记录一下如何配置静态IP
第一步：将网关配置成 dhcp（动态ip模式）
[root@localhost network-scripts]# ls /etc/sysconfig/network-scripts/ifcfg-* /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-lo # 备份网卡 [root@localhost network-scripts]# cp /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-ens33.bak [root@localhost network-scripts]# yum install -y vim [root@localhost network-scripts]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
修改内容如下：
BOOTPROTO=dhcp ONBOOT=yes
重启网卡
[root@localhost network-scripts]# service network restart
验证动态ip是否配置成功
[root@localhost network-scripts]# ping baidu.com PING baidu.com (220.181.38.148) 56(84) bytes of data. 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=1 ttl=128 time=25.4 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=2 ttl=128 time=27.0 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=3 ttl=128 time=26.6 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=4 ttl=128 time=25.1 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=5 ttl=128 time=24.7 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=6 ttl=128 time=25.7 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=7 ttl=128 time=25.2 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=8 ttl=128 time=24.8 ms
可以ping通,则说明动态ip配置完成
第二步：获取当前网关和ip区段
[root@localhost network-scripts]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:20:75:ba brd ff:ff:ff:ff:ff:ff
inet 192.168.22.131/24 brd 192.168.22.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::cb27:d176:7700:6841/64 scope link noprefixroute
valid_lft forever preferred_lft forever
[root@localhost network-scripts]# ip route
default via 192.168.22.2 dev ens33 proto static metric 100
192.168.22.0/24 dev ens33 proto kernel scope link src 192.168.22.131 metric 100
从上述信息可以得出:
ip：192.168.22.131
子网掩码：255.255.255.0
网关：192.168.22.2
第三步： 设置静态ip
[root@localhost network-scripts]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
修改内容如下：
TYPE="Ethernet" PROXY_METHOD="none" BROWSER_ONLY="no" #BOOTPROTO="dhcp" BOOTPROTO="static" # 修改内容 静态IP DEFROUTE="yes" IPV4_FAILURE_FATAL="no" IPV6INIT="yes" IPV6_AUTOCONF="yes" IPV6_DEFROUTE="yes" IPV6_FAILURE_FATAL="no" IPV6_ADDR_GEN_MODE="stable-privacy" NAME="ens33" UUID="54684693-c6f8-40b1-9195-a8c479015524" DEVICE="ens33" ONBOOT="yes" IPADDR=192.168.22.131 # 新增内容 静态IP GATEWAY=192.168.22.2 # 新增内容 动态网关 DNS1=8.8.8.8 # 新增内容 dns
重启网卡
[root@localhost network-scripts]# service network restart
验证静态ip 是否配置成功
[root@localhost network-scripts]# ping baidu.com PING baidu.com (220.181.38.148) 56(84) bytes of data. 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=1 ttl=128 time=25.4 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=2 ttl=128 time=27.0 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=3 ttl=128 time=26.6 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=4 ttl=128 time=25.1 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=5 ttl=128 time=24.7 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=6 ttl=128 time=25.7 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=7 ttl=128 time=25.2 ms 64 bytes from 220.181.38.148 (220.181.38.148): icmp_seq=8 ttl=128 time=24.8 ms
可以ping通,则说明静态 ip 配置完成