OpenSUSE/Linux Network Configuration

OpenSUSE/Linux Network Configuration

As a result of work, I came into contact with a Linu server of the OpenSUSE system. I thought I only needed to configure an ifcfg-ethx file like CentOS, but I found that there was no network after the configuration, to query relevant information, the network settings of the OpenSUSE system are as follows:

1. Modify the ifcfg-eth0 file (modify the following parameters)
# Vi/etc/sysconfig/network/ifcfg-eth0
BOOTPROTO = static
IPADDR = 192.168.1.100
NETMASK = 255.255.255.0

2. Configure the gateway (route)
# Vi/etc/sysconfig/network/routes
Default 192.168.1.1

3. Configure DNS
# Vi/etc/resolv. conf
Nameserver 202.101.172.35
Nameserver 114.114.114.114

4. Restart the NIC
#/Etc/init. d/network restart

= ==================
1:/etc/sysconfig/network/config
In this file, you can select the NIC Management Mode as follows:
NETWORKMANAGER = "yes" is set through the networkmanage user Method
NETWORKMANAGER = "no" is set through the traditional ipfu method (this is recommended)

2:/etc/sysconfig/network/ifcfg-eth0
In this file, you can configure parameters such as the IP address acquisition method, IP address, and subnet mask.
BOOTPROTO = 'static'
IPADDR = '1970. 168.1.136'
NAME = 'rtl-8139/8139 C/8139C +'
NETMASK = '2017. 255.255.0'
STARTMODE = 'auto'

USERCONTROL = 'no'

3./etc/sysconfig/network/routes
In this file, you can configure the default route (GATEWAY) to configure the default gateway and the route to a specific network or host. This file will be loaded at network start.

The configuration format is as follows:
<Default | destination network | destination host> <gateway> <destination network subnet mask> <Local Network Interface>

Instance 1:

Add Gateway:
Default 192.168.1.1

You can also add the following commands:
# Route add default gw 192.168.1.1

You can also run the following command to delete the file:
# Route del-net 0.0.0.0

Instance 2:
The network configured to 192.168.1.100 is output from 192.168.2.100:
192.168.1.100 192.168.2.100 255.255.255.255

Add using commands:
# Route add-net 192.168.1.100 netmask 255.255.255.255 gw 192.168.2.100

Delete using commands:
# Route del-net 192.168.1.100 netmask 255.255.255.255

4./etc/resolv. conf
In this file, you can configure DNS domain name resolution. There are four main parameters:
Nameserver # define the IP address of the DNS server (required)
Domain # define a local domain name (optional)
Search # list of domain names (optional)
Sortlist # Sort returned Domain Names (optional)

Example:
Domain bkjia.com
Search www.bkjia.com bkjia.com
Nameserver 202.101.172.35
Nameserver 114.114.114.114