Linux 网络管理（1） - 网络配置文件

/etc/sysconfig/network-scripts/ifcfg-*

[vagrant@10 ~]$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255
        inet6 fe80::e096:3a76:6df1:bd6d  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:6b:57:88  txqueuelen 1000  (Ethernet)
        RX packets 952  bytes 85854 (83.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 621  bytes 73814 (72.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.33.88  netmask 255.255.255.0  broadcast 192.168.33.255
        inet6 fe80::a00:27ff:fedb:788f  prefixlen 64  scopeid 0x20<link>
        ether 08:00:27:db:78:8f  txqueuelen 1000  (Ethernet)
        RX packets 62  bytes 4389 (4.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 18  bytes 2208 (2.1 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 0  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
[vagrant@10 ~]$ ll /etc/sysconfig/network-scripts/ifcfg-*
-rw-r--r-- 1 root    root    168 Jul 14  2015 /etc/sysconfig/network-scripts/ifcfg-enp0s3
-rw-rw-r-- 1 vagrant vagrant 214 May 14 10:52 /etc/sysconfig/network-scripts/ifcfg-eth1
-rw-r--r-- 1 root    root    254 Jan  2 16:29 /etc/sysconfig/network-scripts/ifcfg-lo
[vagrant@10 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-lo
DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback
[vagrant@10 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-eth1
#VAGRANT-BEGIN
# The contents below are automatically generated by Vagrant. Do not modify.
NM_CONTROLLED=yes
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.33.88
NETMASK=255.255.255.0
DEVICE=eth1
PEERDNS=no
#VAGRANT-END
[vagrant@10 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-enp0s3
# Generated by dracut initrd
NAME="enp0s3"
DEVICE="enp0s3"
ONBOOT=yes
NETBOOT=yes
UUID="8924a5b0-f9f4-453b-910d-118a91dac1ec"
IPV6INIT=yes
BOOTPROTO=dhcp
TYPE=Ethernet

/etc/sysconfig/network

/etc/resolv.conf

[vagrant@10 ~]$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 10.0.2.3

/etc/hosts

[vagrant@10 ~]$ cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1 user.bluelive.o
127.0.0.1 task.bluelive.o
127.0.0.1 ad.bluelive.o

私有IP 主机名 别名