hi, trying to add a little of context to the request of daniel :) we are playing with nova-docker, and we realized that
1) it's unclear (or not supported) passing enviroment variable through userdata. probably the current version of IBM Cloud Manager with OpenStack V4.3 indeed does implement a mechanism [1], but is not commited on stackforge 2) a large number of containers will fail during the start because of missing required enviroment parameters. the user in the interface will be notified a "No valid host found", which is quite puzzling and not very user friendly :) so we are tyring to find out: about 1) is there already an official solution? not much work also to implement the same solution proposed in [1]. most important is agreeing on how to pass such parameters (also without a metadata server and cloud-init, e.g. using user_data). about 2) unfortunately the docker remote client regardless any error during the start of a containers returns you a simple 204 code. what can be done, is checking - after the "start" command - if the container as an error code using the container inspector. still this has 2 inconvinients: a) if the inspections occurs before the container exiting with error, you will not be able to detect the issue; b) we tried to retrieve the "error message" but apparently is not available through the docker apis, while on command line using "docker run..." you would get a nice message such as: please set this variable. any nice idea on how to solve this? cheers, federico [1] http://www-01.ibm.com/support/knowledgecenter/#!/SST55W_4.3.0/liaca/liaca_container_instance.html On Fri, Jul 10, 2015 at 11:03 AM, Daniel Depaoli < daniel.depa...@create-net.org> wrote: > Hi all. > I have a brief question about nova and nova-docker. > In nova-docker I add a piece of code when I raise an exception, in > particular in 'novadocker/virt/docker/driver.py', function > '_start_container': > > * > exitcode=self.docker.inspect_container(container_id)['State']['ExitCode']* > * if exitcode > 0:* > * raise exception.NoValidHost(reason="Error in docker exit > code")* > > In nova cli or horizon I expect to see my error and not the general error > raised after my code. > Can you help me? > > Daniel > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > -- -- Future Internet is closer than you think! http://www.fiware.org Official Mirantis partner for OpenStack Training https://www.create-net.org/community/openstack-training -- Dr. Federico M. Facca CREATE-NET Via alla Cascata 56/D 38123 Povo Trento (Italy) P +39 0461 312471 M +39 334 6049758 E federico.fa...@create-net.org T @chicco785 W www.create-net.org
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