[Software] Handling IP addresses on Linaro OS

[Stemmo]

Hi all,
I'm configuring a Linaro OS (Debian for ARM).

I need to understand which is the simplest way to switch the OS from DHCP to static network set;
sometime I will not have a remote GUI but I found the nmtui tool;
sometime I will need to switch from a web page, then by Apache/PHP script, so the changes must be simply.

The OS uses by default the NetworkManager set to DHCP.
If I simply added a /etc/network/interfaces.d/staticEth0 file and in my understanding this should override the NetworkManager settings since the NetworkManager.conf file contains the row:

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[ifupdown]
managed=false

If I reboot the board I only found a dynamic address. So the file is not sufficient to switch to static address.
If I take a look to syslog file I found:

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Dec 22 10:34:32 kitvpnT2 NetworkManager[312]: <info>  [1671701672.8253] ifupdown:       interface-parser: source line includes interfaces file(s) /etc/network/interfaces.d/staticEth0
Dec 22 10:34:32 kitvpnT2 NetworkManager[312]: <info>  [1671701672.8254] ifupdown:       interface-parser: parsing file /etc/network/interfaces.d/staticEth0
Dec 22 10:34:32 kitvpnT2 NetworkManager[312]: <info>  [1671701672.8255] ifupdown:       interface-parser: finished parsing file /etc/network/interfaces.d/staticEth0

So I guess the file is correct.

Any idea?
Thanks!

[cds60601]

Generally, and If I understand what you want to do, you WANT Network Manager to manage your wired connection. Your /etc/NetworkManager.conf should have ifdown managed set to = true
This is what I do so I can, when needed, use nmtui. Keep in mind that there may be other things you may need to do first so read up on this link: https://wiki.debian.org/NetworkConfiguration and here: https://wiki.debian.org/NetworkManager

After setting to true you'll need to restart the services - I find it faster (and simply because I'm lazy) to just reboot after making the change.

[Stemmo]

Thanks for reply.

My doubt is: since the flag is false, why the NetworkManager is managing the addresses receiving the dynamic address?

The https://wiki.debian.org/NetworkManager page says that:

NetworkManager will only handle interfaces not declared in /etc/network/interfaces (see README file).

About nmtui: ok for the textual console, but thinking I need to achieve it from a PHP script, I cannot interact with the terminal.
My idea is to generate a nmconnection file filled with the dhcp/static parameters under [ipV4] section.

[cds60601]

I seem to recall that there can't be any references to the interface to be managed by Network Manager, in /etc/networking/interfaces
Review this: https://wiki.debian.org/NetworkManager# ... _Unmanaged

[Stemmo]

Thanks!

Finally I decided to use the command:

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nmcli connection modify 'Wired connection 2' setting.property value

It is quite simple to use it in a shell script / PHP

[cds60601]

Good deal. It sounds like you have this worked out. Mind marking this solved if it is?