Re: Cinder-Ceph Multi-Backend Example

[alex barchiesi]

Hi James,
at GARR we recently tested the cinder multi backend with the following idea
in mind:
support 3 different backends:

   - a default one, for general-purpose disks like virtual machine boot
   disks: replicated pool with replica factor equal to 3
   - a reduced redundancy one: replicated pool with replica factor 2, which
   should slightly improve latency
   - a large capacity one: erasure-coded (possibly with a small frontend
   replicated pool)

Premise: we have a juju deployed O~S (spanning 3 geographical data centers).

We configured Cinder such that it allows selection between multiple “Volume
Types”, where each Volume Type points to a distinct Ceph pool within the
same Ceph cluster.

This is the simplest configuration, as it involves Cinder configuration
alone. Volumes which are created can be later attached to running
instances, but all instances will have their boot disk on the default pool
cinder-ceph.

We faced some issues as reported in details here:
https://docs.google.com/document/d/1VSS28cvZBIOEzTOmVMWZ0o9FiVFkVLvu__ZOLxneMqQ/edit#

Would be interesting to find a way to be able to select the pool also for
the boot disk of a VM

Any comment, idea, "whatever" (also on the doc) is very much appreciated

best Alex



Dr. Alex Barchiesi

Senior cloud architect
Art -Science relationships responsible

GARR CSD department

Rome GARR: +39 06 4962 2302
Lausanne EPFL: +41 (0) 774215266

linkedin: alex barchiesi
<http://www.linkedin.com/profile/view?id=111538190=%2Enmp_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1=spm_pic>
_
I started with nothing and I still have most of it.



On Sat, Apr 14, 2018 at 3:25 AM, James Beedy <jamesbe...@gmail.com> wrote:

> Looking for examples that describe how to consume multiple ceph backends
> using the cinder-ceph charm.
>
> Thanks
>
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juju gui login through token instead of user name and pass ?

[alex barchiesi]

Dear all,
we are trying at GARR to setup a page to give access through a SAML proxy.
This would ideally map a SAML user to a juju user and login into the GUI
without the need for the user to know a password.
I wonder if the GUI allows a way to access through API o anything that
could help accomplishing the fore-mentioned task.

Also I was taking a look into https://jujucharms.com/
juju-gui/142#charm-config-login-help
juju gui server charm and noticed at the chapter: The Juju GUI server

I quote for convenience: "
*It allows for logging in into the GUI via a timed token. This is used,
forinstance, by Juju Quickstart to allow automatic user's authentication."*
so I wonder what a timed toked is and how to generate one.

thanks in advance




Dr. Alex Barchiesi

Senior cloud architect
Art -Science relationships responsible

GARR CSD department

Rome GARR: +39 06 4962 2302 <06%204962%202302>
Lausanne EPFL: +41 (0) 774215266 <+41%2077%20421%2052%2066>

linkedin: alex barchiesi
<http://www.linkedin.com/profile/view?id=111538190=%2Enmp_*1_*1_*1_*1_*1_*1_*1_*1_*1_*1=spm_pic>
_
I started with nothing and I still have most of it.
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