Ubuntu (2) [Network Management-Static IP]

Language 2020-04-15 11:37:02 views: null

Ubuntu-Network Management-Static IP

1.Ubuntu14.04LTS

1. Version Information

cat /proc/version

Linux version 4.4.0-148-generic (buildd@lgw01-amd64-014) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.4) ) #174~14.04.1-Ubuntu SMP Thu May 9 08:17:37 UTC 2019

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2. Static IP configuration

1. Get current network information

1. Get Gateway Information

route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.234.2   0.0.0.0         UG    0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.234.0   0.0.0.0         255.255.255.0   U     0      0        0 eth0

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2. Obtain IP information

ifconfig

docker0   Link encap:Ethernet  HWaddr 02:42:91:d4:70:77
          inet addr:172.17.0.1  Bcast:172.17.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 00:0c:29:58:0d:f8
          inet addr:192.168.234.100  Bcast:192.168.234.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe58:df8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:803 errors:0 dropped:0 overruns:0 frame:0
          TX packets:814 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:250601 (250.6 KB)  TX bytes:103036 (103.0 KB)
          Interrupt:19 Base address:0x2000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:123 errors:0 dropped:0 overruns:0 frame:0
          TX packets:123 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1
          RX bytes:8881 (8.8 KB)  TX bytes:8881 (8.8 KB)

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If you cannot execute the ifconfig command, you need to install the net-tools tool

sudo apt install -y net-tools
Network card IP（ inet addr） Broadcast address (Bcast) Mask
eth0 192.168.234.100 192.168.234.255 255.255.255.0

Need to be modified to:

Network card IP（ inet addr） Broadcast address (Bcast) Mask
eth0 192.168.234.60 192.168.234.255 255.255.255.0

2. Modify / etc / network / interfaces

sudo vim /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

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Modify as follows:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.234.60
netmask 255.255.255.0
gateway 192.168.234.2
dns-nameservers 114.114.114.114

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dns-nameservers can also not fill in here, you need to add a nameserver 114.114.114.114 in: sudo vim /etc/resolv.conf, it is more troublesome, so it is more convenient to add dns-nameservers 114.114.114.114 directly here

3. Modify /etc/NetworkManager/NetworkManager.conf

sudo vim /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

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Modify [managed = true]:

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true

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4. Restart

Why not restart the network, but restart the machine?
Because execution: sudo /etc/init.d/networking restart often does not work

sudo reboot

3. Test

1. Network Information Test

ifconfig

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2. Networking test

curl -X GET "http://www.baidu.com"

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2.Ubuntu16.04LTS

1. Version Information

cat /proc/version

Linux version 4.15.0-96-generic (buildd@lgw01-amd64-007) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12)) #97~16.04.1-Ubuntu SMP Wed Apr 1 03:03:31 UTC 2020

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2. Static IP configuration

1. Get current network information

1. Get Gateway Information

route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.234.2   0.0.0.0         UG    100    0        0 ens33
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 ens33
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.234.0   0.0.0.0         255.255.255.0   U     100    0        0 ens33

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2. Obtain IP information

ifconfig

docker0   Link encap:Ethernet  HWaddr 02:42:a8:77:b0:51
          inet addr:172.17.0.1  Bcast:172.17.255.255  Mask:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

ens33     Link encap:Ethernet  HWaddr 00:0c:29:c5:27:c8
          inet addr:192.168.234.129  Bcast:192.168.234.255  Mask:255.255.255.0
          inet6 addr: fe80::a35e:af29:2935:9820/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2311 errors:0 dropped:0 overruns:0 frame:0
          TX packets:618 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1447686 (1.4 MB)  TX bytes:54078 (54.0 KB)
          Interrupt:19 Base address:0x2000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:290 errors:0 dropped:0 overruns:0 frame:0
          TX packets:290 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:25128 (25.1 KB)  TX bytes:25128 (25.1 KB)

Insert picture description here
If you cannot execute the ifconfig command, you need to install the net-tools tool

sudo apt install -y net-tools
Network card IP（ inet addr） Broadcast address (Bcast) Mask
ens33 192.168.234.129 192.168.234.255 255.255.255.0

Need to be modified to:

Network card IP（ inet addr） Broadcast address (Bcast) Mask
ens33 192.168.234.61 192.168.234.255 255.255.255.0

2. Modify / etc / network / interfaces

sudo vim /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

Insert picture description here
Modify as follows:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto ens33
iface ens33 inet static
address 192.168.234.61
netmask 255.255.255.0
gateway 192.168.234.2

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3. Modify /etc/NetworkManager/NetworkManager.conf

sudo vim /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

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Modify [managed = true]:

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true

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4. Modify /etc/resolvconf/resolv.conf.d/base

sudo vim /etc/resolvconf/resolv.conf.d/base

Add to:

nameserver 114.114.114.114

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5. Restart the network

sudo /etc/init.d/networking restart

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If the test fails, restart the computer directly

sudo reboot

3. Test

1. Network Information Test

ifconfig

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2. Networking test

curl -X GET "http://www.baidu.com"

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3.Ubuntu18.04LTS

1. Version Information

cat /proc/version

Linux version 5.3.0-46-generic (buildd@lcy01-amd64-013) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #38~18.04.1-Ubuntu SMP Tue Mar 31 04:17:56 UTC 2020

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2. Static IP configuration

1. Get current network information

1. Get Gateway Information

route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.234.2   0.0.0.0         UG    100    0        0 ens33
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 ens33
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.234.0   0.0.0.0         255.255.255.0   U     100    0        0 ens33

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2. Obtain IP information

ifconfig

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:a2:55:db:1a  txqueuelen 0  (Ethernet)
        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

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.234.133  netmask 255.255.255.0  broadcast 192.168.234.255
        inet6 fe80::20c:29ff:fe1e:a361  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:1e:a3:61  txqueuelen 1000  (Ethernet)
        RX packets 2567  bytes 320945 (320.9 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 434  bytes 55474 (55.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000

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 261  bytes 22051 (22.0 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 261  bytes 22051 (22.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Insert picture description here
If you cannot execute the ifconfig command, you need to install the net-tools tool

sudo apt install -y net-tools
Network card IP（ inet addr） Broadcast address (Bcast) Mask
ens33 192.168.234.133 192.168.234.255 255.255.255.0

Need to be modified to:

Network card IP（ inet addr） Broadcast address (Bcast) Mask
ens33 192.168.234.62 192.168.234.255 255.255.255.0

2. Modify /etc/netplan/01-network-manager-all.yaml

sudo vim /etc/netplan/01-network-manager-all.yaml

Modify as follows:

# Let NetworkManager manage all devices on this system
network:
 version: 2
 renderer: NetworkManager

 ethernets:
  ens33:
   dhcp4: no
   dhcp6: no
   addresses: [192.168.234.62/24]
   gateway4: 192.168.234.2
   nameservers: 
        addresses: [114.114.114.114,8.8.8.8]

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3. Application modification

sudo netplan apply

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If the test fails, restart the computer directly

sudo reboot

3. Test

1. Network Information Test

ifconfig

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2. Networking test

curl -X GET "http://www.baidu.com"

Insert picture description here

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