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From Yitao Jiang <>
Subject Re: Help In Launch instance Schedule policy
Date Wed, 27 Nov 2013 06:03:21 GMT
Hi, Prachi,

I followed the directions of above link , and configure
to userconcentratedpod_random. But it seems does't work.
Through the codes about the deployment plan, i found that the algorithms of
and UserConcentratedPodPlanner all extends FirstFitPlanner, but neither
implement the method of
plan, which actually works for deciding where to deploy a vm, so no matter
what algorithms i used,
it all use the algorithm of firstfit algorithm, cause it implement the plan
Is this a bug or developer should implement this method, or did i miss
something in the global configuration ?

2013/11/23 Prachi Damle <>

> Hi Yitao,
> CloudStack scheduling policies are implemented by the DeploymentPlanner
> and HostAllocator/StoragePoolAllocator components.
> If you want to take a look at the source code of these components, this
> will tell you where to look:
> These components implement the Adapter  interface of CloudStack - so you
> can provide your own implementation and plug it in to be used for VM
> deployment. Let me know if you face any questions on this.
> Thanks,
> Prachi
> -----Original Message-----
> From: Yitao Jiang []
> Sent: Thursday, November 21, 2013 10:11 PM
> To:
> Subject: Help In Launch instance Schedule policy
> Hi,
> I was looking for some help in launching instance using some schedule
> policies.
> I know that Openstack allow developers write their own policy .So I guess
> cloudstack support maybe that .Since i am just started developing it , i'll
> be really appreciate someone can tell me where i can write it  using some
> policy, such as according to the weight of each host, or RoundRobin.
> --
> Best regards,
> Yitao Jiang


Best regards,

Yitao Jiang

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