[slurm-users] RES: How to delay the start of slurmd until Infiniband/OPA network is fully up?
Paulo Jose Braga Estrela
paulo.estrela at petrobras.com.br
Wed Nov 1 00:12:10 UTC 2023
I think that you should use NetworkManager-wait-online.service In RHEL 8. Take a look at its man page. It only allows the system reach network-online after all network interfaces are online. So, if your OP interfaces are managed by Network Manager, you can use it.
De: slurm-users <slurm-users-bounces at lists.schedmd.com> Em nome de Ole Holm Nielsen
Enviada em: terça-feira, 31 de outubro de 2023 07:00
Para: Slurm User Community List <slurm-users at lists.schedmd.com>
Assunto: Re: [slurm-users] How to delay the start of slurmd until Infiniband/OPA network is fully up?
On 10/30/23 20:15, Jeffrey R. Lang wrote:
> The service is available in RHEL 8 via the EPEL package repository as system-networkd, i.e. systemd-networkd.x86_64 253.4-1.el8 epel
Thanks for the info. We can install the systemd-networkd RPM from the EPEL repo as you suggest.
I tried to understand the properties of systemd-networkd before implementing it in our compute nodes. While there are lots of networkd man-pages, it's harder to find an overview of the actual properties of networkd. This is what I found:
* Networkd is a service included in recent versions of Systemd. It seems to be an alternative to NetworkManager.
* Red Hat has stated that systemd-networkd is NOT going to be implemented in RHEL 8 or 9.
* Comparing systemd-networkd and NetworkManager:
* Networkd is described in the Wikipedia article
While networkd seems to be really nifty, I hesitate to replace NetworkManager by networkd on our EL8 and EL9 systems because this is an unsupported and only lightly tested setup, and it may require additional work to keep our systems up-to-date in the future.
It seems to me that Max Rutkowski's solution in
https://github.com/maxlxl/network.target_wait-for-interfaces is less intrusive than converting to systemd-networkd.
> -----Original Message-----
> From: slurm-users <slurm-users-bounces at lists.schedmd.com> On Behalf Of
> Ole Holm Nielsen
> Sent: Monday, October 30, 2023 1:56 PM
> To: slurm-users at lists.schedmd.com
> Subject: Re: [slurm-users] How to delay the start of slurmd until Infiniband/OPA network is fully up?
> ◆ This message was sent from a non-UWYO address. Please exercise caution when clicking links or opening attachments from external sources.
> Hi Jens,
> Thanks for your feedback:
> On 30-10-2023 15:52, Jens Elkner wrote:
>> Actually there is no need for such a script since
>> /lib/systemd/systemd-networkd-wait-online should be able to handle it.
> It seems that systemd-networkd exists in Fedora FC38 Linux, but not in
> RHEL 8 and clones, AFAICT.
O emitente desta mensagem é responsável por seu conteúdo e endereçamento e deve observar as normas internas da Petrobras. Cabe ao destinatário assegurar que as informações e dados pessoais contidos neste correio eletrônico somente sejam utilizados com o grau de sigilo adequado e em conformidade com a legislação de proteção de dados e privacidade aplicável. A utilização das informações e dados pessoais contidos neste correio eletrônico em desconformidade com as normas aplicáveis acarretará a aplicação das sanções cabíveis.
The sender of this message is responsible for its content and address and must comply with Petrobras' internal rules. It is up to the recipient to ensure that the information and personal data contained in this email are only used with the appropriate degree of confidentiality and in compliance with applicable data protection and privacy legislation. The use of the information and personal data contained in this e-mail in violation of the applicable rules will result in the application of the applicable sanctions.
El remitente de este mensaje es responsable por su contenido y dirección y debe cumplir con las normas internas de Petrobras. Corresponde al destinatario asegurarse de que la información y los datos personales contenidos en este correo electrónico solo se utilicen con el grado adecuado de confidencialidad y de conformidad con la legislación aplicable en materia de privacidad y protección de datos. El uso de la información y datos personales contenidos en este correo electrónico en contravención de las normas aplicables dará lugar a la aplicación de las sanciones correspondientes.
More information about the slurm-users