[lxc-users] Experience with large number of LXC/LXD containers

[Gaétan QUENTIN]

sorry i have answered to the bad thread. ignore this answer for this
question. thanks.

2017-03-27 16:04 GMT+02:00 Gaétan QUENTIN <gaetan.quentin at gmail.com>:

> in a LXD container, the syntax is:
>
> lxc config set mycontainer   raw.idmap 'both 1003 1003'
>
> as idmap  is a blob, i you want assign multiple values, you have to send
> multilines:
>
> echo -e "both 1003 1003\nboth 1004 1004" | lxc config set mycontainer
> raw.idmap -
>
> 2017-03-27 15:33 GMT+02:00 Serge E. Hallyn <serge at hallyn.com>:
>
>> On Tue, Mar 14, 2017 at 02:29:01AM +0100, Benoit GEORGELIN - Association
>> Web4all wrote:
>> > ----- Mail original -----
>> > > De: "Simos Xenitellis" <simos.lists at googlemail.com>
>> > > À: "lxc-users" <lxc-users at lists.linuxcontainers.org>
>> > > Envoyé: Lundi 13 Mars 2017 20:22:03
>> > > Objet: Re: [lxc-users] Experience with large number of LXC/LXD
>> containers
>> >
>> > > On Sun, Mar 12, 2017 at 11:28 PM, Benoit GEORGELIN - Association
>> > > Web4all <benoit.georgelin at web4all.fr> wrote:
>> > > > Hi lxc-users ,
>> >
>> > > > I would like to know if you have any experience with a large number
>> of
>> > > > LXC/LXD containers ?
>> > > > In term of performance, stability and limitation .
>> >
>> > > > I'm wondering for exemple, if having 100 containers behave the same
>> of
>> > > > having 1.000 or 10.000 with the same configuration to avoid to talk
>> about
>> > > > container usage.
>> >
>> > > > I have been looking around for a couple of days to found any
>> user/admin
>> > > > feedback experience but i'm not able to find large deployments
>> >
>> > > > Is there any ressources limits or any maximum number that can be
>> deployed on
>> > > > the same node ?
>> > > > Beside physical performance of the node, is there any specific
>> behavior that
>> > > > a large number of LXC/LXD containers can experience ? I'm not aware
>> of any
>> > > > test or limits that can occurs beside number of process. But I'm
>> sure from
>> > > > LXC/LXD side it might have some technical contraints ?
>> > > > Maybe on namespace availability , or any other technical layer used
>> by
>> > > > LXC/LXD
>> >
>> > > > I will be interested to here from your experience or if you have any
>> > > > links/books/story about this large deployments
>> >
>> >
>> > > This would be interesting to hear if someone can talk publicly about
>> > > their large deployment.
>> >
>> > > In any case, it should be possible to create, for example, 1000 web
>> servers
>> > > and then try to access each one and check any issues regarding the
>> > > response time.
>> > > Another test would be to install 1000 Wordpress installations and
>> > > check again for the response time
>> > > and resource usage.
>> > > Such scripts to create this massive number of containers would also be
>> > > helpful to replicate
>> > > any issues in order to solve them.
>> >
>> > > Simos
>> >
>> >
>> > Yes it's would be very nice to hear about this kind of infrastructure
>> using lxc/lxd
>> > I'm not yet ready to make this kind of testing, but if someone would
>> like to work on this with me as a projet, I can provide the technical
>> infrastructure and scripts .
>> > That would be nice to provide a good testing case and analyse to share
>> to the community
>>
>> It should be pretty simple.  I've done testing like this to test other
>> software, which implicitly ended up testing lxd.
>>
>> You'd probably create a first container and publish it locally,
>>
>> (all commands untested, just an example)
>>
>> lxc launch ubuntu:xenial template
>> lxc exec template -- apt -y install nginx
>> lxc stop template
>> lxc publish --alias template template
>>
>> Then do your testing in a loop,
>>
>> # spin up containers
>> for i in `seq -f "%04g" 1 1000`; do
>>         lxc launch template nginx-$i
>> done
>>
>> # spin up clients
>> ... etc
>> _______________________________________________
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>> lxc-users at lists.linuxcontainers.org
>> http://lists.linuxcontainers.org/listinfo/lxc-users
>
>
>
>
> --
> Gaétan QUENTIN
>



-- 
Gaétan QUENTIN
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