[openstack-dev] [magnum] Memory recommendation for running magnum with devstack

Hongbin Lu hongbin034 at gmail.com
Fri Mar 20 03:53:10 UTC 2015

Hi Surojit,

I think 8G of RAM and 80G of disk should be considered the minimum. The
guide will create 3 m1.small VMs (each with 2G of RAM and 20G of disk), and
2 volumes (5G each).

In your case, I am not sure why you get the memory error. Probably, you
could walk-around it by creating a flavor with less computing resources,
then use the new flavor to create the cluster:

# create a new flavor with 1G of RAM and 10G of disk
$ nova flavor-create m2.small 1234 1024 10 1

$ magnum baymodel-create --name testbaymodel --image-id fedora-21-atomic \
                       --keypair-id testkey \
                       --external-network-id $NIC_ID \
                       --dns-nameserver --flavor-id m2.small \
                       --docker-volume-size 5


On Thu, Mar 19, 2015 at 11:06 PM, Surojit Pathak <suro.patz at gmail.com>

> Team,
> Do we have a ballpark amount for the memory of the devstack machine to run
> magnum? I am running devstack as a VM with (4 VCPU/50G-Disk/8G-Mem) and
> running magnum on it as per[1].
> I am observing the kube-Nodes goes often in "SHUTOFF" state. If I do 'nova
> reset-state', the instance goes into ERROR state with message indicating
> that it has run out of memory[2].
> Do we have any recommendation on the size of the RAM for the deployment
> described in[1]?
> --
> Regards,
> [1] -https://github.com/stackforge/magnum/blob/master/
> doc/source/dev/dev-quickstart.rst
> [2] - "internal error: process exited while connecting to monitor: Cannot
> set up guest memory 'pc.ram'
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