[ovirt-users] Re: about the network name rules on CentOS/Redhat 8 and the cloud-init network interface name

Great! Thank you! From: Ales Musil <amusil(a)redhat.com&gt; Sent: Tuesday, August 24, 2021 7:00 PM To: Tommy Sway <sz_cuitao(a)163.com&gt; Cc: users <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] about the network name rules on CentOS/Redhat 8 and the cloud-init network interface name On Tue, Aug 24, 2021 at 12:59 PM Ales Musil <amusil(a)redhat.com <mailto:amusil@redhat.com> > wrote: On Tue, Aug 24, 2021 at 11:17 AM Tommy Sway <sz_cuitao(a)163.com <mailto: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? Thank you very much! _______________________________________________ Users mailing list -- users(a)ovirt.org <mailto:users@ovirt.org> To unsubscribe send an email to users-leave(a)ovirt.org <mailto:users-leave@ovirt.org> Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/L6LPAKYOUYP... 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-schem... [1] https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/... -- Ales Musil Software Engineer - RHV Network <https://www.redhat.com> Red Hat EMEA <mailto:amusil@redhat.com> amusil(a)redhat.com IM: amusil <https://red.ht/sig> -- Ales Musil Software Engineer - RHV Network <https://www.redhat.com> Red Hat EMEA <mailto:amusil@redhat.com> amusil(a)redhat.com IM: amusil <https://red.ht/sig>