Linuxネットワーク設定

Redhat/CentOS

/etc/sysconfig/network-scripts/ifcfg-eth0

スタティック

 DEVICE=eth0
 BOOTPROTO=static
 IPADDR=192.168.0.150
 NETMASK=255.255.255.0
 ONBOOT=yes

DHCP

 DEVICE=eth0
 BOOTPROTO=dhcp
 ONBOOT=yes

/etc/sysconfig/network

 NETWORKING=yes
 NETWORKING_IPV6=no
 HOSTNAME=localhost.localdomain
 GATEWAY=192.168.0.1

ネットワーク設定変更の反映

RHEL/CentOS

 systemctl reload NetworkManager

RHEL6/CentOS6

 service network restart
 

設定確認

RHEL/CentOS

 ip link show
 ip address show
 

RHEL6/CentOS6

 ifconfig
 

参考

https://access.redhat.com/documentation/ja-jp/red_hat_enterprise_linux/6/html/deployment_guide/s1-networkscripts-static-routes

Ubuntu

/etc/network/interfaces

スタティック

 # The loopback network interface
 auto lo
 iface lo inet loopback
 
 # The primary network interface
 auto eth0
 iface eth0 inet static
     address 192.168.0.150
     netmask 255.255.255.0
     gateway 192.168.0.1
     network 192.168.0.0
     broardcast 192.168.0.255

DHCP

 # This file describes the network interfaces available on your system
 # and how to activate them. For more information, see interfaces(5).
 
 # The loopback network interface
 auto lo
 iface lo inet loopback
 
 # The primary network interface
 allow-hotplug eth0
 iface eth0 inet dhcp

詳しくはman 5 interfacesを参照する。

IPエイリアス debian

• /etc/network/interfacesを書き換える。
• eth0(192.168.0.2)にeth0:0(192.168.0.3)を追加する場合、以下。

 auto eth0
 iface eth0 inet static
    address 192.168.0.2
    netmask 255.255.255.0
    gateway 192.168.0.1
 
 auto eth0:0
 iface eth0:0 inet static
    address 192.168.0.3
    netmask 255.255.255.0
    gateway 192.168.0.1