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How to assign a static ip address before eth link running in ubuntu 18.04 LTS?
How Assign Static IP using Netplan so isc-dhcp-server doesn't crashHow to assign unique MAC addresses to sub-interfacesissue with dhcp default network fileHow to assign static IP address by MAC addressUbuntu and Static IP AddressHow do I assign a static IP address in Ubuntu 17.04 without rebooting?Netplan error, error on nameserverUbuntu Server 18.04.1 Cannot Keep Static IP Address After AssignedHow Assign Static IP using Netplan so isc-dhcp-server doesn't crash
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I know that if I need to assign a static ip address I will need to use netplan in Ubuntu 18.04, and I have done exactly that and made it work.
Here is my config file:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: yes
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
After I use netplan apply, the ifconfig command shows the ip address of enp131s0f0 set to 10.66.0.1 after I plug the cable into the port for "enp131s0f0". This causes a problem because if I do not plug in the cable to this port, the port itself won't get a static ip address even if the ipaddress is set in netplan, this will cause some services to fail to start (eg, isc-dhcp-server).
For example, if you have 3 ports and you have configured them like so:
network:
version: 2
renderer: networkd
ethernets:
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
enp131s0f1:
dhcp4: no
addresses: [10.66.1.1/24]
enp131s0f2:
dhcp4: no
addresses: [10.66.2.1/24]
enp131s0f3:
dhcp4: no
addresses: [10.66.3.1/24]
If isc-dhcp-server is installed on all these 3 ports. The isc-dhcp-server will start only if you connect all 3 ports, if you failed to connect your cable to any one port of these 3 ports the isc-dhcp-server will fail to start because the port does not have a static address (without the cable plugged into the port), even if you set the static ip address in netplan.
So I would like to ask how to permanently assign a static address to a net port. To make it have an ipaddress before I plug in the cable... I need this because there are some ports on my server that currently I do not use (the cable is left unplugged), but I need isc-dhcp-server to start...
networking server network-manager ethernet dhcp
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
add a comment
|
I know that if I need to assign a static ip address I will need to use netplan in Ubuntu 18.04, and I have done exactly that and made it work.
Here is my config file:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: yes
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
After I use netplan apply, the ifconfig command shows the ip address of enp131s0f0 set to 10.66.0.1 after I plug the cable into the port for "enp131s0f0". This causes a problem because if I do not plug in the cable to this port, the port itself won't get a static ip address even if the ipaddress is set in netplan, this will cause some services to fail to start (eg, isc-dhcp-server).
For example, if you have 3 ports and you have configured them like so:
network:
version: 2
renderer: networkd
ethernets:
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
enp131s0f1:
dhcp4: no
addresses: [10.66.1.1/24]
enp131s0f2:
dhcp4: no
addresses: [10.66.2.1/24]
enp131s0f3:
dhcp4: no
addresses: [10.66.3.1/24]
If isc-dhcp-server is installed on all these 3 ports. The isc-dhcp-server will start only if you connect all 3 ports, if you failed to connect your cable to any one port of these 3 ports the isc-dhcp-server will fail to start because the port does not have a static address (without the cable plugged into the port), even if you set the static ip address in netplan.
So I would like to ask how to permanently assign a static address to a net port. To make it have an ipaddress before I plug in the cable... I need this because there are some ports on my server that currently I do not use (the cable is left unplugged), but I need isc-dhcp-server to start...
networking server network-manager ethernet dhcp
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
Jun 3 at 13:39
add a comment
|
I know that if I need to assign a static ip address I will need to use netplan in Ubuntu 18.04, and I have done exactly that and made it work.
Here is my config file:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: yes
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
After I use netplan apply, the ifconfig command shows the ip address of enp131s0f0 set to 10.66.0.1 after I plug the cable into the port for "enp131s0f0". This causes a problem because if I do not plug in the cable to this port, the port itself won't get a static ip address even if the ipaddress is set in netplan, this will cause some services to fail to start (eg, isc-dhcp-server).
For example, if you have 3 ports and you have configured them like so:
network:
version: 2
renderer: networkd
ethernets:
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
enp131s0f1:
dhcp4: no
addresses: [10.66.1.1/24]
enp131s0f2:
dhcp4: no
addresses: [10.66.2.1/24]
enp131s0f3:
dhcp4: no
addresses: [10.66.3.1/24]
If isc-dhcp-server is installed on all these 3 ports. The isc-dhcp-server will start only if you connect all 3 ports, if you failed to connect your cable to any one port of these 3 ports the isc-dhcp-server will fail to start because the port does not have a static address (without the cable plugged into the port), even if you set the static ip address in netplan.
So I would like to ask how to permanently assign a static address to a net port. To make it have an ipaddress before I plug in the cable... I need this because there are some ports on my server that currently I do not use (the cable is left unplugged), but I need isc-dhcp-server to start...
networking server network-manager ethernet dhcp
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
I know that if I need to assign a static ip address I will need to use netplan in Ubuntu 18.04, and I have done exactly that and made it work.
Here is my config file:
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: yes
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
After I use netplan apply, the ifconfig command shows the ip address of enp131s0f0 set to 10.66.0.1 after I plug the cable into the port for "enp131s0f0". This causes a problem because if I do not plug in the cable to this port, the port itself won't get a static ip address even if the ipaddress is set in netplan, this will cause some services to fail to start (eg, isc-dhcp-server).
For example, if you have 3 ports and you have configured them like so:
network:
version: 2
renderer: networkd
ethernets:
enp131s0f0:
dhcp4: no
addresses: [10.66.0.1/24]
enp131s0f1:
dhcp4: no
addresses: [10.66.1.1/24]
enp131s0f2:
dhcp4: no
addresses: [10.66.2.1/24]
enp131s0f3:
dhcp4: no
addresses: [10.66.3.1/24]
If isc-dhcp-server is installed on all these 3 ports. The isc-dhcp-server will start only if you connect all 3 ports, if you failed to connect your cable to any one port of these 3 ports the isc-dhcp-server will fail to start because the port does not have a static address (without the cable plugged into the port), even if you set the static ip address in netplan.
So I would like to ask how to permanently assign a static address to a net port. To make it have an ipaddress before I plug in the cable... I need this because there are some ports on my server that currently I do not use (the cable is left unplugged), but I need isc-dhcp-server to start...
networking server network-manager ethernet dhcp
networking server network-manager ethernet dhcp
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
edited May 29 at 15:40
Arronical
14.5k10 gold badges54 silver badges102 bronze badges
14.5k10 gold badges54 silver badges102 bronze badges
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
asked May 29 at 14:47
Reverie MetherlenceReverie Metherlence
61 bronze badge
61 bronze badge
Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
Jun 3 at 13:39
add a comment
|
Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
Jun 3 at 13:39
Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
Jun 3 at 13:39
status please...
– heynnema
Jun 3 at 13:39
add a comment
|
1 Answer
1
active
oldest
votes
Here's a minimal .yaml file for your configuration... this assumes that 10.66.0.2 is an available static address on your network, and that 10.66.0.1 is the proper gateway...
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
enp4s0f0:
addresses: [10.66.0.2/24]
gateway4: 10.66.0.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
optional: true # may or may not be desired, to stop 2 minute boot delay
sudo netplan --debug generate # generate config files
sudo netplan apply # apply configuration
reboot # reboot and verify operation
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
add a comment
|
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1 Answer
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1 Answer
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oldest
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oldest
votes
active
oldest
votes
Here's a minimal .yaml file for your configuration... this assumes that 10.66.0.2 is an available static address on your network, and that 10.66.0.1 is the proper gateway...
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
enp4s0f0:
addresses: [10.66.0.2/24]
gateway4: 10.66.0.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
optional: true # may or may not be desired, to stop 2 minute boot delay
sudo netplan --debug generate # generate config files
sudo netplan apply # apply configuration
reboot # reboot and verify operation
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
add a comment
|
Here's a minimal .yaml file for your configuration... this assumes that 10.66.0.2 is an available static address on your network, and that 10.66.0.1 is the proper gateway...
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
enp4s0f0:
addresses: [10.66.0.2/24]
gateway4: 10.66.0.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
optional: true # may or may not be desired, to stop 2 minute boot delay
sudo netplan --debug generate # generate config files
sudo netplan apply # apply configuration
reboot # reboot and verify operation
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
add a comment
|
Here's a minimal .yaml file for your configuration... this assumes that 10.66.0.2 is an available static address on your network, and that 10.66.0.1 is the proper gateway...
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
enp4s0f0:
addresses: [10.66.0.2/24]
gateway4: 10.66.0.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
optional: true # may or may not be desired, to stop 2 minute boot delay
sudo netplan --debug generate # generate config files
sudo netplan apply # apply configuration
reboot # reboot and verify operation
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
Here's a minimal .yaml file for your configuration... this assumes that 10.66.0.2 is an available static address on your network, and that 10.66.0.1 is the proper gateway...
network:
version: 2
renderer: networkd
ethernets:
eno1:
dhcp4: true
enp4s0f0:
addresses: [10.66.0.2/24]
gateway4: 10.66.0.1
nameservers:
addresses: [8.8.8.8,8.8.4.4]
optional: true # may or may not be desired, to stop 2 minute boot delay
sudo netplan --debug generate # generate config files
sudo netplan apply # apply configuration
reboot # reboot and verify operation
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
edited May 29 at 16:32
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
answered May 29 at 15:19
heynnemaheynnema
27.2k3 gold badges29 silver badges73 bronze badges
27.2k3 gold badges29 silver badges73 bronze badges
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
add a comment
|
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
This doesn't seem to address the OP's concerns that having network cables unplugged on various NICs is causing problems. Your config resembles the OP's very closely, is the lack of a gateway address and nameserver what's causing the issue when a cable is unplugged?
– Arronical
May 29 at 15:44
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
@Arronical the primary problem is that OP tried to assign a static IP using (probably) the IP of the gateway.
– heynnema
May 29 at 15:52
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
That's a good point! I missed that. They're trying to install a DHCP server so perhaps they're trying to create some sort of router? The second example shows different values in the 3rd octet so may be a possibility?
– Arronical
May 29 at 16:01
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
@Arronical same problem there... assigning the IP to the gateway address.
– heynnema
May 29 at 16:02
add a comment
|
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Are you using a desktop or server installation?
– heynnema
May 29 at 15:24
status please...
– heynnema
May 30 at 14:05
status please...
– heynnema
Jun 3 at 13:39