On Fri, Feb 28, 2014 at 03:45:39PM -0500, Zane Bitter wrote: > On 28/02/14 02:28, Qiming Teng wrote: > > > >The creation a stack is usually a time costly process, considering that > >there are cases where software packages need to be installed and > >configured. > > > >There are also cases where a stack consists of more than one VM instance > >and the dependency between instances. The instances may have to be > >created one by one. > > > >Are Heat people considering adding some progress updates during the > >deployment? For example, a simple log that can be printed by heatclient > >telling the user what progress has been made: > > > >Refreshing known resources types > >Receiving template <...> > >Validating template <...> > >Creating resource my_lb [AWS::EC2:LoadBalancer] > >Creating resource lb_instance1 [AWS::EC2::Instance] > >Creating resource latency_watcher [AWS::CloudWatch::Alarm] > >.... > >... > > > > > >This would be useful for users to 'debug' their templates, especially > >when the template syntax is okay but its activities are not the intended > >one. > > Yes, we need some sort of back-channel to feed information to the > user - not only on progress but things like warnings. Right now we > have to choose between failing a whole stack or not notifying the > user at all when something is suspect. > > The ReST model is unfortunately not conducive to this, as you > generally don't want to keep the HTTP connection open and block > until something is complete. One good idea floating around is to > send the messages to a Marconi queue that the user can connect to. > > It's all up for discussion in this blueprint: > > https://blueprints.launchpad.net/heat/+spec/user-visible-logs > > >Do we have to rely on heat-cfn-api to get these notifications? > > No, you can also use the native api ;) > > cheers, > Zane. >
Thanks. 'User-visible-logs' is indeed what I am really interested in. Better yet, the in-instance log can be fed back to users. Regards, Qiming _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
