linux 查看网络配置文件和路由信息

ECS信息

• 规格：2vCPUs | 4GiB | kc1.large.2
• 镜像：openEuler 20.03 64bit with ARM | 公共镜像

linux 查看网络配置文件和路由信息

ifconfig 查看正在工作的网卡设备名称

IP信息已隐藏
获取网卡设备名称：eth0

# ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.XXX  netmask 255.255.255.0  broadcast 192.168.0.XXX
        inet6 XXXX::XXXX:XXXX:XXXX:XXXX  prefixlen 64  scopeid 0x20<link>
        ether XX:XX:XX:XX:XX:XX  txqueuelen 1000  (Ethernet)
        RX packets 4703  bytes 459830 (449.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3504  bytes 457059 (446.3 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 1000  (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

查看eth0网卡的配置文件

• ifcfg-eth0文件可以实现永久配置静态IP等功能

# cd /etc/sysconfig/network-scripts/
# ll
total 20K
-rw-------. 1 root root 86 May 18  2020 ifcfg-eth0
-rw-------. 1 root root 86 May 18  2020 ifcfg-eth1
-rw-------. 1 root root 86 May 18  2020 ifcfg-eth2
-rw-------. 1 root root 86 May 18  2020 ifcfg-eth3
-rw-------. 1 root root 86 May 18  2020 ifcfg-eth4

# cat ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="dhcp"
ONBOOT="yes"
TYPE="Ethernet"
PERSISTENT_DHCLIENT="yes"

route 查看路由信息

# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         _gateway        0.0.0.0         UG    100    0        0 eth0
169.254.169.254 192.168.0.254   255.255.255.255 UGH   100    0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    100    0        0 eth0
169.254.169.254 192.168.0.254   255.255.255.255 UGH   100    0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0

• ping 3次路由，看看网络状况

# ping -c 3 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=64 time=0.175 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=64 time=0.193 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=64 time=0.176 ms

--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2053ms
rtt min/avg/max/mdev = 0.175/0.181/0.193/0.008 ms

学习资料

• 弹性云服务器 ECS
• openEuler-官网
• openEuler-B站
• openEuler-慕课
• openEuler-文档
• 鲲鹏社区

欢迎各位同学一起来交流学习心得^_^