Hi Gilad,
I followed your instructions, but it didn't work for me, I think for
many reasons.
Le 26/05/2014 16:22, Gilad Chaplik a écrit :
Hi Nathanaël,
happy to assist :) hope it will work in first run:
1) install the proxy and ovirtsdk.
yum install -y ovirt-scheduler-proxy
2) put attached file in the right place (according to docs: ".../plugins"),
according to the docs
(http://www.ovirt.org/Features/oVirt_External_Scheduling_Proxy), the
place should be "plugins_path=$PYTHONPATH/ovirt_scheduler/plugins",
which is should be mentionned in Scheduler conf file
(/etc/ovirt/scheduler/scheduler.conf), but none of them exists in the
filesystem!!! I've only found /usr/share/ovirt-scheduler-proxy/plugins
for placing the python file and no scheduler.conf is present where I
could change that path.
make sure to edit the file with your ovirt's ip, user@domain and PW.
My engine API can't be reached in http, so there is some work to do this
with https. Here is what I did : according to
/usr/lib/python2.6/site-packages/ovirtsdk/api.py, I add insecure=True to
the chain
connection = API(url='http*s*://host:port',
username='user@domain',
password=''*insecure='True'*)
Maybe it is not enough and it would be useful to add
validate_cert_chain=False...
3) restart proxy service.
3) use config tool to configure ovirt-engine:
* "ExternalSchedulerServiceURL"="http://<ip>:18781/"
The scheduler proxy listens to localhost:18781, none of ips that can be
filled here will be reached on that port.
* "ExternalSchedulerEnabled"=true
4) restart ovirt-engine service.
5) under configure->cluster_policy see that weight function
memory_even_distribution was added (should be in manage policy units or /sth- you
will see it in the main dialog as well).
6) clone/copy currernt cluster's used cluster policy (probably none - prefer it
to have no balancing modules to avoid conflicts), name it 'your_name' and
attach memory_even_distribution weight (you can leave it as the only weight
module in weight section to avoid configuring factors).
7) replace cluster's cluster policy with newly created one.
try it out and let me know how goes :-)
Thanks,
Gilad.
If all above is tru, should be a good idea to update the wiki...
----- Original Message -----
From: "Nathanaël Blanchet" <[email protected]>
To: "Gilad Chaplik" <[email protected]>
Cc: "Karli Sjöberg" <[email protected]>, "users" <[email protected]>
Sent: Monday, May 26, 2014 12:12:41 PM
Subject: Re: [ovirt-users] SLA : RAM scheduling
Hi Gilad,
Yes, I'm interested in that feature, I'vebegun to read this following
your advices
http://www.ovirt.org/Features/oVirt_External_Scheduling_Proxy, I don't
think I will have time enough to get it work quickly, I'm not
experienced enough with this kind of feature, unless you help me.
Le 24/05/2014 10:49, Gilad Chaplik a écrit :
Hi Nathanaël,
You have 2 ways to get what you're after (quick/slow):
1) install 'oVirt's external scheduling proxy', and write an extremely
simple weight function that orders hosts by used memory, then add that to
your cluster policy.
2) open an RFE for oVirt 3.4 to have that in
(https://bugzilla.redhat.com/enter_bug.cgi?product=oVirt).
let me know if you consider (1), and I'll assist.
anyway I suggest you'll open an RFE for 3.5.
Thanks,
Gilad.
----- Original Message -----
From: "Nathanaël Blanchet" <[email protected]>
To: "Karli Sjöberg" <[email protected]>
Cc: "users" <[email protected]>
Sent: Friday, May 23, 2014 7:38:40 PM
Subject: Re: [ovirt-users] SLA : RAM scheduling
even distribution is for cpu only
Le 23/05/2014 17:48, Karli Sjöberg a écrit :
Den 23 maj 2014 17:13 skrev =?ISO-8859-1?Q?Nathana=EBl_Blanchet?=
<[email protected]> :
Le 23/05/2014 17:11, Nathanaël Blanchet a écrit :
Hello,
On ovirt 3.4, is it possible to schedule vms distribution depending on
host RAM availibility?
Concretly, I had to manually move vms all the vms to the second host
of the cluster, this lead to reach 90% occupation of memory on the
destination host. When my first host has rebooted, none vms of the
second host automatically migrated to the first one which had full
RAM. How to make this happen?
... so as to both hosts be RAM evenly distributed... hope to be enough
clear...
Sounds like you just want to apply the cluster policy for even
distribution.
Have you assigned any policy for that cluster?
/K
--
Nathanaël Blanchet
Supervision réseau
Pôle exploitation et maintenance
Département des systèmes d'information
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
[email protected]
_______________________________________________
Users mailing list
[email protected]
http://lists.ovirt.org/mailman/listinfo/users
--
Nathanaël Blanchet
Supervision réseau
Pôle exploitation et maintenance
Département des systèmes d'information
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14 [email protected]
_______________________________________________
Users mailing list
[email protected]
http://lists.ovirt.org/mailman/listinfo/users
--
Nathanaël Blanchet
Supervision réseau
Pôle exploitation et maintenance
Département des systèmes d'information
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
[email protected]
>
--
Nathanaël Blanchet
Supervision réseau
Pôle exploitation et maintenance
Département des systèmes d'information
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5
Tél. 33 (0)4 67 54 84 55
Fax 33 (0)4 67 54 84 14
[email protected]
_______________________________________________
Users mailing list
[email protected]
http://lists.ovirt.org/mailman/listinfo/users
