On Tue, Aug 24, 2021 at 12:59 PM Ales Musil <amusil@redhat.com> wrote:
On Tue, Aug 24, 2021 at 11:17 AM Tommy Sway <sz_cuitao@163.com> wrote:
Everybody is good!
As you all know, to use the client's network card name in cloud-init, you must fill in the exact name of the network card interface.
This was easy in version 7 and before, which usually started with EN0.
After version 8, however, the naming conventions for network cards changed a lot. In my own test environment, for example, I started with ENS3.
I'm not sure what naming convention it uses, which would make it impossible to specify nic information using cloud-init.
Could you help me explain how to deal with this problem?
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Hi,
this is called Predictable Network Names and it is the default policy for net interface naming in el8. There are a couple tricks you can do to mitigate that, you can disable it, or predict the name based on your configuration PCI slot etc [0]. There is a documentation for RHEL that explains it [1]. There is also another option and that's using a custom udev rule to assign whatever name you want based on some identifiers like MAC, PCI addr etc.
Hopefully this helps.
Best regards, Ales
Forgot the links: [0] https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.h... [1] https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/htm...
--
Ales Musil
Software Engineer - RHV Network
Red Hat EMEA <https://www.redhat.com>
amusil@redhat.com IM: amusil <https://red.ht/sig>
-- Ales Musil Software Engineer - RHV Network Red Hat EMEA <https://www.redhat.com> amusil@redhat.com IM: amusil <https://red.ht/sig>