Linux批量添加IP,Centos如何快速绑定多个IP(ifcfg-eth0-range0一个配置文件即可)
  • 有时候,我们购买了5个IP,13个IP,难道都要一个一个的来写配置文件吗?Linux这么批量添加IP?Centos如何快速绑定多个IP?可否做到一个配置文件即可?可以! 可用IP数查询

    可以在/etc/sysconfig/network-scripts下创建一个range文件

    比如,vi /etc/sysconfig/network-scripts/ifcfg-eth0-range0

    DEVICE=eth0BOOTPROTO=staticIPADDR_START=64.120.228.163IPADDR_END=64.120.228.166CLONENUM_START=8NETMASK=255.255.255.248ONBOOT=yes

    CLONENUM_START — 网络克隆接口的启始号. # eg “1″  生成的网络接口会从 eth0:1开始。

    然后重启网络让IP生效: service network restart

     

    NETMASK 子网掩码 参考表:

     

    /29 (5 usable) NETMASK = 255.255.255.248
    /28 (13 usable) NETMASK = 255.255.255.240
    /27 (29 usable) NETMASK = 255.255.255.224
    /26 (61 usable) NETMASK = 255.255.255.192
    /25 (125 usable) NETMASK = 255.255.255.128
    /24 (253 usable) NETMASK = 255.255.255.0

    IP段/28举例: 64.120.220.224/28   可用IP查询

    The first two IPs (network & gateway) and the last IP (broadcast) in your assignment are unusable for you.


    Network: 64.120.220.224
    Gateway: 64.120.220.225
    Broadcast: 64.120.220.239
    Useable IPs: 64.120.220.226-238 (13 useable)

    NETMASK = 255.255.255.240

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