There's an undocumented min_count and max_count option in python-novaclient ServerManager.create() which looks like what you want [1].
-Kurt [1] https://github.com/openstack/python-novaclient/blob/cc7364067f995bd952149cd172cebf083fe4dc99/novaclient/v3/servers.py#L427 On Friday, July 11, 2014 9:50:10 PM UTC-4, Michael DeHaan wrote: > > "So should I make a custom module which loops over nova_compute > asynchronously, and also assigns floating IPs?" > > I'd first rather know where the openstack API allows simultaneous creation > of N virtual machines of the same image type. > > I expect the floating IP stuff is fast and a usual with_items loop isn't a > problem there, once those guests exist. > > (Using neutron, I assume?) > > > On Fri, Jul 11, 2014 at 6:54 PM, Kurt Yoder <[email protected] > <javascript:>> wrote: > >> So should I make a custom module which loops over nova_compute >> asynchronously, and also assigns floating IPs? >> >> Would such a module be useful to the wider community, or is it too >> specialized to contribute back? >> >> On Friday, July 11, 2014 6:34:47 PM UTC-4, Michael DeHaan wrote: >> >>> So some of the provisioning modules, like AWS in particular, support >>> spinning up "N" modules at a time by passing "count" or "exact_count". >>> >>> Rackspace I believe does this with manual looping (for now), but I could >>> be wrong and that might have just been historical truth. >>> >>> If the OpenStack API says we can launch 10 at once, it could be made to >>> do similar things. >>> >>> >>> >>> >>> On Fri, Jul 11, 2014 at 5:28 PM, Kurt Yoder <[email protected]> >>> wrote: >>> >>>> I guess that error is because I put a "with_items" in there. >>>> >>>> How does everyone else do this? I don't understand how to loop >>>> asynchronously. See pseudo-code: >>>> >>>> < start all 5 at once: > >>>> < start up openstack host > >>>> < assign it a floating ip > >>>> < capture the floating ip > >>>> < end when all 5 have a floating ip > >>>> < wait for all 5 floating IPs to have an open SSH port > >>>> >>>> On Friday, July 11, 2014 5:20:34 PM UTC-4, Kurt Yoder wrote: >>>>> >>>>> Well, "async" is totally a bust. I got a message: >>>>> >>>>> fatal: [localhost] => lookup plugins (with_*) cannot be used with >>>>> async tasks >>>>> >>>>> >>>>> >>>>> On Thursday, July 10, 2014 6:17:48 PM UTC-4, Kurt Yoder wrote: >>>>>> >>>>>> Hello list, >>>>>> >>>>>> I anticipate provisioning 10-20 VMs using Ansible, then assigning >>>>>> floating IPs to each, then waiting for SSH to become available for each >>>>>> VM. >>>>>> I would like to do this in parallel instead of serially. Specifically: >>>>>> >>>>>> >>>>>> - Start the VMs, but don't block >>>>>> - Assign the IPs, but don't block >>>>>> - Wait on SSH until all VMs respond >>>>>> >>>>>> >>>>>> I saw the nova_compute "wait: 'no'" option, but when I use it I get a >>>>>> stack trace: >>>>>> >>>>>> failed: [localhost] => (item=1) => {"failed": true, "item": 1, >>>>>>> "parsed": false} >>>>>>> invalid output was: Traceback (most recent call last): >>>>>>> File >>>>>>> "/home/ubuntu/.ansible/tmp/ansible-tmp-1405028178.0-234314980043958/nova_compute", >>>>>>> >>>>>>> line 1490, in <module> >>>>>>> main() >>>>>>> File >>>>>>> "/home/ubuntu/.ansible/tmp/ansible-tmp-1405028178.0-234314980043958/nova_compute", >>>>>>> >>>>>>> line 266, in main >>>>>>> _create_server(module, nova) >>>>>>> File >>>>>>> "/home/ubuntu/.ansible/tmp/ansible-tmp-1405028178.0-234314980043958/nova_compute", >>>>>>> >>>>>>> line 194, in _create_server >>>>>>> private = [ x['addr'] for x in getattr(server, >>>>>>> 'addresses').itervalues().next() if x['OS-EXT-IPS:type'] == 'fixed'] >>>>>>> StopIteration >>>>>>> >>>>>> >>>>>> Perhaps I'm using it incorrectly: >>>>>> >>>>>> - name: Launch cluster VM on Openstack >>>>>>> nova_compute: >>>>>>> name: "{{ os_username }}_cluster1" >>>>>>> state: present >>>>>>> login_username: "{{ os_username }}" >>>>>>> login_tenant_name: "{{ os_tenant }}" >>>>>>> login_password: "{{ os_password }}" >>>>>>> image_id: "{{ os_image_id }}" >>>>>>> key_name: "{{ os_username }}_controller_key" >>>>>>> wait: "no" >>>>>>> flavor_id: "{{ os_flavor_id }}" >>>>>>> auth_url: "{{ os_url }}" >>>>>>> user_data: "#cloud-config\nmanage_etc_hosts: true" >>>>>>> >>>>>> >>>>>> >>>>>> So, two questions: >>>>>> >>>>>> >>>>>> 1. Am I using "wait" correctly? >>>>>> 2. Should I use "wait" to get to my desired parallel VM launch, >>>>>> as described above, or should I use something else, e.g. "async"? >>>>>> >>>>>> >>>>>> Thanks, >>>>>> >>>>>> -Kurt >>>>>> >>>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Ansible Project" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> To view this discussion on the web visit https://groups.google.com/d/ >>>> msgid/ansible-project/32b58cdf-17cd-42c9-8ef6- >>>> dc90327e989a%40googlegroups.com >>>> <https://groups.google.com/d/msgid/ansible-project/32b58cdf-17cd-42c9-8ef6-dc90327e989a%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Ansible Project" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/ansible-project/2326c06a-dec5-43b2-bd22-bb6856d14227%40googlegroups.com >> >> <https://groups.google.com/d/msgid/ansible-project/2326c06a-dec5-43b2-bd22-bb6856d14227%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. 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