Le 23 nov. 2021 à 09:14, Ignazio Cassano <ignaziocassano@gmail.com> a écrit :

Franck, If the cache works fine , I think glance image format could be qcow2. The volume is created in raw format but

the download phase is executed only the fisrt time you create a volume from a new image.

With this setup I can create 20-30 instance in a shot and it takes few minutes to complete.

I always use general purpose small images and colplete the instance configuration (package installation and so on) with heat or ansible.

Ignazio

Il giorno mar 23 nov 2021 alle ore 08:57 Franck VEDEL <franck.vedel@univ-grenoble-alpes.fr> ha scritto:

Ignazio, Radoslaw, 

thanks to you, I made some modifications and my environment seems to work better (the images are placed on the iiscsi bay on which the volumes are stored).

I installed the cache for glance. It works, well I think it does.

My question is: between the different formats (qcow2, raw or other), which is the most efficient if

- we create a volume then an instance from the volume

- we create an instance from the image

- we create an instance without volume

- we create a snapshot then an instance from the snapshot

Franck

Le 19 nov. 2021 à 14:50, Ignazio Cassano <ignaziocassano@gmail.com> a écrit :

Franck, this help you a lot.

Thanks Radoslaw

Ignazio

Il giorno ven 19 nov 2021 alle ore 12:03 Radosław Piliszek <radoslaw.piliszek@gmail.com> ha scritto:

If one sets glance_file_datadir_volume to non-default, then glance-api
gets deployed on all hosts.

-yoctozepto

On Fri, 19 Nov 2021 at 10:51, Ignazio Cassano <ignaziocassano@gmail.com> wrote:
>
> Hello Franck, glance is not deployed on all nodes at default.
> I got the same problem
> In my case I have 3 controllers.
> I created an nfs share on a storage server where to store images.
> Before deploying glance, I create /var/lib/glance/images on the 3 controllers and I mount the nfs share.
> This is my fstab on the 3 controllers:
>
> 10.102.189.182:/netappopenstacktst2_glance /var/lib/glance nfs  rw,user=glance,soft,intr,noatime,nodiratime
>
> In my globals.yml I have:
> glance_file_datadir_volume: "/var/lib/glance"
> glance_backend_file: "yes"
>
> This means images are on /var/lib/glance and since it is a nfs share all my 3 controlles can share images.
> Then you must deploy.
> To be sure the glance container is started on all controllers, since I have 3 controllers, I deployed 3 times changing the order in the inventory.
> First time:
> [control]
> A
> B
> C
>
> Second time:
> [control]
> B
> C
> A
>
> Third time:
> [control]
> C
> B
> A
>
> Or you can deploy glance 3 times using -t glance and -l <controllername>
>
> As far as the instance  stopped, I got I bug with a version of kolla.
> https://bugs.launchpad.net/kolla-ansible/+bug/1941706
> Now is corrected and with kolla 12.2.0 it works.
> Ignazio
>
>
> Il giorno mer 17 nov 2021 alle ore 23:17 Franck VEDEL <franck.vedel@univ-grenoble-alpes.fr> ha scritto: