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I think it might be useful to think about how to integrate savana into heat.
When auto scale usually the first created node will be removed first.

-----原始邮件-----
发件人: "Jay Lau" <jay.lau.513 at gmail.com>
发送时间: ‎2013/‎12/‎11 23:46
收件人: "OpenStack Development Mailing List" <openstack-dev at lists.openstack.org>
主题: [openstack-dev] [OpenStack][Heat] AutoScaling scale down issue

Greetings,


Here come a question related to heat auto scale down.


The scenario is as following:

I was trying to deploy hadoop cluster with heat Auto Scaling template. 

When scale up a slave node, I can use user-data to do some post work for configuration file on hadoop master node base on the information of slave node (The mainly configuration file is conf/slaves as I need to put slave node to this file);

But when scale down, seems I have no chance to do some configuration for the master node (Remove the scale down node from conf/slaves) as master node do not know which slave node was scale down.


Does anyone has some experience on this?



Thanks,


Jay
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