记录一下Virtual Box的Bridge模式从dhcp改成静态ip方式需要修改的内容。
环境设定
相关内容在如下软件版本和环境下验证通过：
理论上来说，版本差异影响应该不大。
设定文件
如下为例子内容，未列出部分表明dhcp和静态IP设定方式一致
[root@ku8-1 network-scripts]# cat ifcfg-enp0s3 TYPE="Ethernet"PROXY_METHOD="none"BROWSER_ONLY="no"BOOTPROTO="none"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="enp0s3"UUID="d62948ce-251e-4201-91a8-7ef8acb25fae"DEVICE="enp0s3"ONBOOT="yes"IPADDR="192.168.31.131"PREFIX="24"GATEWAY="192.168.31.1"DNS1="192.168.31.1"IPV6_PRIVACY="no"[root@ku8-1 network-scripts]#
注意，网关设定可以直接修改/etc/sysconfig/network，添加GATEWAY=”192.168.31.1”也是一样作用
起效命令
注意，低版本的centos或者redhat系列OS，没有升到systemd的方式下，需要用service命令进行操作，另外由于IP的变化，如果是通过终端方式，起效后，当前链接自然回断掉，需要重新ssh连接
确认
重新使用ssh连接，确认IP为期待修改方式
liumiaocn:Desktop liumiao$ ssh -l root 192.168.31.131root@192.168.31.131's password: Last login: Thu Feb 15 11:01:11 from 192.168.31.242[root@ku8-1 ~]# ip ad1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000link/ether 08:00:27:14:95:ee brd ff:ff:ff:ff:ff:ffinet 192.168.31.131/24 brd 192.168.31.255 scope global enp0s3valid_lft forever preferred_lft foreverinet6 fe80::9303:4ff4:b522:bdab/64 scope link valid_lft forever preferred_lft forever[root@ku8-1 ~]#
这样仅需要重启network服务就可以方式从dhcp改成static方式了
同时，与外网/网关/同网段的其他virtual box主机都是通的
[root@ku8-1 ~]# ping -c1 PING www. (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=25.9 ms--- www. ping statistics ---1 packets transmitted, 1 received, 0% packet loss, time 0msrtt min/avg/max/mdev = 25.904/25.904/25.904/0.000 ms[root@ku8-1 ~]# [root@ku8-1 ~]# ping -c1 192.168.31.1PING 192.168.31.1 (192.168.31.1) 56(84) bytes of data.64 bytes from 192.168.31.1: icmp_seq=1 ttl=64 time=11.5 ms--- 192.168.31.1 ping statistics ---1 packets transmitted, 1 received, 0% packet loss, time 0msrtt min/avg/max/mdev = 11.521/11.521/11.521/0.000 ms[root@ku8-1 ~]# [root@ku8-1 ~]# ping -c1 192.168.31.132PING 192.168.31.132 (192.168.31.132) 56(84) bytes of data.64 bytes from 192.168.31.132: icmp_seq=1 ttl=64 time=0.809 ms--- 192.168.31.132 ping statistics ---1 packets transmitted, 1 received, 0% packet loss, time 0msrtt min/avg/max/mdev = 0.809/0.809/0.809/0.000 ms[root@ku8-1 ~]#
反向确认，从宿主机到bridge的机器也是畅通
liumiaocn:~ liumiao$ ping -c1 192.168.31.131PING 192.168.31.131 (192.168.31.131): 56 data bytes64 bytes from 192.168.31.131: icmp_seq=0 ttl=64 time=0.303 ms--- 192.168.31.131 ping statistics ---1 packets transmitted, 1 packets received, 0.0% packet lossround-trip min/avg/max/stddev = 0.303/0.303/0.303/0.000 msliumiaocn:~ liumiao$
