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netplan apply does not change the IP address

Ubuntu 18.04 Static IP with NetPlan require rebootDomain controller IP address changeCan't change IP address to static - interface isn't in /etc/network/interfacesNetplan error, error on nameserverUbuntu 18.04 Network card with two IP addressesNetworking problem on Ubuntu 18.04: no gatewayUnexpected “hidden” additional DHCP addressNetplan error in network definition expected mappingHow do I configure a DNS server for Ubuntu Server 18.04 LTS?Setting a static IP address was failedUbuntu 18.04 Server no remote access

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1

ok, my file is located at /etc/netplan/50-cloud-init.yaml
I changed the IP address as a static IP address as following:

network:

  version: 2 



  renderer: netwokrd



  ethernets:



    dhcp4: no

    dhcp6: no

    addresses: [10.0.2.100/24]

    gateway4: 10.0.2.1

    nameservers:

       addresses: [10.0.2.100]

Then, I typed sudo netplan apply, and there was not any error message.
BUT, when I typed ifconfig, it still remail past IP address on enp0s3.
Do you guys know why this happen?

networking server netplan

share|improve this question

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

add a comment | 

1

ok, my file is located at /etc/netplan/50-cloud-init.yaml
I changed the IP address as a static IP address as following:

network:

  version: 2 



  renderer: netwokrd



  ethernets:



    dhcp4: no

    dhcp6: no

    addresses: [10.0.2.100/24]

    gateway4: 10.0.2.1

    nameservers:

       addresses: [10.0.2.100]

Then, I typed sudo netplan apply, and there was not any error message.
BUT, when I typed ifconfig, it still remail past IP address on enp0s3.
Do you guys know why this happen?

networking server netplan

share|improve this question

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

add a comment | 

ok, my file is located at /etc/netplan/50-cloud-init.yaml
I changed the IP address as a static IP address as following:

network:

  version: 2 



  renderer: netwokrd



  ethernets:



    dhcp4: no

    dhcp6: no

    addresses: [10.0.2.100/24]

    gateway4: 10.0.2.1

    nameservers:

       addresses: [10.0.2.100]

Then, I typed sudo netplan apply, and there was not any error message.
BUT, when I typed ifconfig, it still remail past IP address on enp0s3.
Do you guys know why this happen?

networking server netplan

share|improve this question

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

network:

  version: 2 



  renderer: netwokrd



  ethernets:



    dhcp4: no

    dhcp6: no

    addresses: [10.0.2.100/24]

    gateway4: 10.0.2.1

    nameservers:

       addresses: [10.0.2.100]

share|improve this question

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

share|improve this question

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

edited Oct 13 '18 at 14:05

chili555

39k55280

edited Oct 13 '18 at 14:05

chili555

39k55280

asked Oct 13 '18 at 6:04

강찬희강찬희

364

asked Oct 13 '18 at 6:04

강찬희강찬희

364

2 Answers
2

active

oldest

votes

2

Netplan is fussy about how .yaml files are formatted. Don't try to "pretty-fy" them.

Is 50-cloud-init.yaml the only .yaml file in /etc/netplan?

So edit your .yaml file to look like this...

network:

  version: 2 

  renderer: networkd <-- note the correct spelling

  ethernets:

    enp0s3: <-- identify the proper interface

      dhcp4: no

      dhcp6: no

      addresses: [10.0.2.100/24]

      gateway4: 10.0.2.1

      nameservers:

        addresses: [10.0.2.100] <-- this is probably the wrong address

        addresses: [8.8.8.8, 8.8.4.4] <-- use something like this instead

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

and recheck your ifconfig output.

Note: if it was me, I'd let NetworkManager manage this interface, and set the static address information into the "Wired Connection" profile.

network:

  version: 2

  renderer: NetworkManager

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

share|improve this answer

edited Feb 2 at 4:23

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  since the netplan config is in /etc/netplan/50-cloud-init.yaml it is likely this is a cloud image which has no NetworkManager installed.
  
  – slangasek
  Oct 25 '18 at 5:20
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Why do you must reboot? Is there any other way?
  
  – Nimitack
  Dec 17 '18 at 9:19
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack technically, the sudo netplan -debug generate and sudo netplan apply commands should do it, but I've seen cases where it didn't, and a reboot will actually start with the netplan configuration you've set, and you can confirm that it's working as expected.
  
  – heynnema
  Dec 17 '18 at 13:29
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I see this issue on vmware machine and on virtual box.. when I install ubuntu 18.04... I really need this to NOT reboot.. I couldn't find anything about this on the web.. this is pretty basic stuff, static IP. I don't understand why to reset it.. it's not hardware or so..., Linux is all about NOT rebooting right?
  
  – Nimitack
  Dec 18 '18 at 12:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack I'm confused. I indicated that a reboot is not mandatory, however, it MAY be required if the sudo netplan apply doesn't do it.
  
  – heynnema
  Dec 18 '18 at 14:30
  

  
  
  
  

 | 
show 3 more comments

-1

someone please unfuck linux networking

share|improve this answer

answered 55 mins ago

Bill WestrupBill Westrup

93

add a comment | 

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2

Netplan is fussy about how .yaml files are formatted. Don't try to "pretty-fy" them.

Is 50-cloud-init.yaml the only .yaml file in /etc/netplan?

So edit your .yaml file to look like this...

network:

  version: 2 

  renderer: networkd <-- note the correct spelling

  ethernets:

    enp0s3: <-- identify the proper interface

      dhcp4: no

      dhcp6: no

      addresses: [10.0.2.100/24]

      gateway4: 10.0.2.1

      nameservers:

        addresses: [10.0.2.100] <-- this is probably the wrong address

        addresses: [8.8.8.8, 8.8.4.4] <-- use something like this instead

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

and recheck your ifconfig output.

Note: if it was me, I'd let NetworkManager manage this interface, and set the static address information into the "Wired Connection" profile.

network:

  version: 2

  renderer: NetworkManager

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

share|improve this answer

edited Feb 2 at 4:23

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  since the netplan config is in /etc/netplan/50-cloud-init.yaml it is likely this is a cloud image which has no NetworkManager installed.
  
  – slangasek
  Oct 25 '18 at 5:20
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Why do you must reboot? Is there any other way?
  
  – Nimitack
  Dec 17 '18 at 9:19
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack technically, the sudo netplan -debug generate and sudo netplan apply commands should do it, but I've seen cases where it didn't, and a reboot will actually start with the netplan configuration you've set, and you can confirm that it's working as expected.
  
  – heynnema
  Dec 17 '18 at 13:29
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I see this issue on vmware machine and on virtual box.. when I install ubuntu 18.04... I really need this to NOT reboot.. I couldn't find anything about this on the web.. this is pretty basic stuff, static IP. I don't understand why to reset it.. it's not hardware or so..., Linux is all about NOT rebooting right?
  
  – Nimitack
  Dec 18 '18 at 12:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack I'm confused. I indicated that a reboot is not mandatory, however, it MAY be required if the sudo netplan apply doesn't do it.
  
  – heynnema
  Dec 18 '18 at 14:30
  

  
  
  
  

 | 
show 3 more comments

2

Netplan is fussy about how .yaml files are formatted. Don't try to "pretty-fy" them.

Is 50-cloud-init.yaml the only .yaml file in /etc/netplan?

So edit your .yaml file to look like this...

network:

  version: 2 

  renderer: networkd <-- note the correct spelling

  ethernets:

    enp0s3: <-- identify the proper interface

      dhcp4: no

      dhcp6: no

      addresses: [10.0.2.100/24]

      gateway4: 10.0.2.1

      nameservers:

        addresses: [10.0.2.100] <-- this is probably the wrong address

        addresses: [8.8.8.8, 8.8.4.4] <-- use something like this instead

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

and recheck your ifconfig output.

Note: if it was me, I'd let NetworkManager manage this interface, and set the static address information into the "Wired Connection" profile.

network:

  version: 2

  renderer: NetworkManager

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

share|improve this answer

edited Feb 2 at 4:23

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  since the netplan config is in /etc/netplan/50-cloud-init.yaml it is likely this is a cloud image which has no NetworkManager installed.
  
  – slangasek
  Oct 25 '18 at 5:20
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Why do you must reboot? Is there any other way?
  
  – Nimitack
  Dec 17 '18 at 9:19
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack technically, the sudo netplan -debug generate and sudo netplan apply commands should do it, but I've seen cases where it didn't, and a reboot will actually start with the netplan configuration you've set, and you can confirm that it's working as expected.
  
  – heynnema
  Dec 17 '18 at 13:29
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I see this issue on vmware machine and on virtual box.. when I install ubuntu 18.04... I really need this to NOT reboot.. I couldn't find anything about this on the web.. this is pretty basic stuff, static IP. I don't understand why to reset it.. it's not hardware or so..., Linux is all about NOT rebooting right?
  
  – Nimitack
  Dec 18 '18 at 12:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Nimitack I'm confused. I indicated that a reboot is not mandatory, however, it MAY be required if the sudo netplan apply doesn't do it.
  
  – heynnema
  Dec 18 '18 at 14:30
  

  
  
  
  

 | 
show 3 more comments

Netplan is fussy about how .yaml files are formatted. Don't try to "pretty-fy" them.

Is 50-cloud-init.yaml the only .yaml file in /etc/netplan?

So edit your .yaml file to look like this...

network:

  version: 2 

  renderer: networkd <-- note the correct spelling

  ethernets:

    enp0s3: <-- identify the proper interface

      dhcp4: no

      dhcp6: no

      addresses: [10.0.2.100/24]

      gateway4: 10.0.2.1

      nameservers:

        addresses: [10.0.2.100] <-- this is probably the wrong address

        addresses: [8.8.8.8, 8.8.4.4] <-- use something like this instead

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

and recheck your ifconfig output.

Note: if it was me, I'd let NetworkManager manage this interface, and set the static address information into the "Wired Connection" profile.

network:

  version: 2

  renderer: NetworkManager

then do:

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

share|improve this answer

edited Feb 2 at 4:23

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

network:

  version: 2 

  renderer: networkd <-- note the correct spelling

  ethernets:

    enp0s3: <-- identify the proper interface

      dhcp4: no

      dhcp6: no

      addresses: [10.0.2.100/24]

      gateway4: 10.0.2.1

      nameservers:

        addresses: [10.0.2.100] <-- this is probably the wrong address

        addresses: [8.8.8.8, 8.8.4.4] <-- use something like this instead

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

network:

  version: 2

  renderer: NetworkManager

sudo netplan --debug generate  # generate the config files

sudo netplan apply            # apply the new configuration

reboot                        # reboot the computer

share|improve this answer

edited Feb 2 at 4:23

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

answered Oct 13 '18 at 15:37

heynnemaheynnema

21.3k22360

-1

someone please unfuck linux networking

share|improve this answer

answered 55 mins ago

Bill WestrupBill Westrup

93

add a comment | 

-1

someone please unfuck linux networking

share|improve this answer

answered 55 mins ago

Bill WestrupBill Westrup

93

add a comment | 

someone please unfuck linux networking

share|improve this answer

answered 55 mins ago

Bill WestrupBill Westrup

93

share|improve this answer

answered 55 mins ago

Bill WestrupBill Westrup

93

answered 55 mins ago

Bill WestrupBill Westrup

93

answered 55 mins ago

Bill WestrupBill Westrup

93