[Openstack] Fwd: kolla-ansible Openstack MTU customization

[Benjamin Diaz]

Hey Manuel,
Did you tried creating a new network after modifying the .conf files and
checking if VMs on that network had the correct MTU?
Also, kolla-ansible supports custom service configurations:
https://github.com/openstack/kolla-ansible/blob/master/doc/source/admin/advanced-configuration.rst#openstack-service-configuration-in-kolla
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Re: [Openstack] kolla-ansible Openstack MTU customization

[Alberto Molina Coballes]

Hi Manuel,

I'm not a kolla-ansible user, but I suppose that you must modify properly
the templates:

kolla-ansible/ansible/roles/neutron/templates/neutron.conf.j2
kolla-ansible/ansible/roles/neutron/templates/ml2_conf.ini.j2

following the instructions of the link provided.

Regards,

Alberto
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[Openstack] prepare UEFI image using diskimage-builder

[Volodymyr Litovka]

Hi colleagues,

we've faced an issue, described in 
https://bugzilla.redhat.com/show_bug.cgi?id=1020622 - when VM don't see 
virtio-scsi devices if there are 2+ connected devices (in our case there 
are block device itself and config drive). We're under Ubuntu 16.04 and 
while Redhat released fixed version of seabios (1.10.2-3), there is no 
update for Ubuntu (still 1.10.2-1).


We see two ways to work around this problem:

1. try to replace seabios binaries (bios-256k.bin and bios.bin) with
   ones from Redhat RPM on compute nodes
2. or use UEFI for booting images

Whether we missed others?

We will try 1st way, but I guess UEFI is more preferable long-term 
solution, since it better itself than legacy BIOS.


During googling I wasn't find any recommendations on how to prepare UEFI 
images using diskimage-builder.


Can anybody there point on documentation or give some recommendations on 
how to create UEFI images with diskimage-builder?


Thank you!

--
Volodymyr Litovka
  "Vision without Execution is Hallucination." -- Thomas Edison

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