Hi Shanker ,
Please check following procedure , Let us know if you require more detail.
Scaling up is two-step process
========================
1-While deploying vm CS configure memory-static-min(=memory in compute
offering) , memory-static-max(=4*memory-static -min) based on vm current CO .
2-Choos a compute offering and dynamically scale up memory ,memory in CO must
be <=memory static-max .
To support these two steps following required
====================================
1-xen server tools in vm
2-xen server license
How Cloudstack making sure these things are installed
=========================================
1- Dynamically Scalable ="yes/No"
If it is No and u try to scale up u will see following error " Unable to
Scale the vm: 3e245053-4310-4154-8753-d5fd1015193c as vm does not have tools to
support dynamic scaling"
2- Enable.dynamic.scale.vm ="True/False"
If it is false and u try to scaleup u will see following error "
oud.exception.PermissionDeniedException: Dynamically scaling virtual machines
is disabled for this zone, please contact your admin"
If it is true and while scaling up vm you see following error
" Cannot scale up the vm because of memory constraint violation: 0 <=
memory-static-min(536870912) <= memory-dynamic-min(1073741824) <=
memory-dynamic-max(1073741824) <= memory-static-max(536870912)"
This is because you may have enabled parameter " Enable.dynamic.scale.vm"
after vm deployment . please stop and start vm ,this action will allow
cloudstack to configure memory-static-min and memory static-max on xen server
host.on xen host you can check these values by using this command
xe vm-list params=all uuid=<uuid of vm>| grep mem
Best practice
==========
1-Please read the admin guide "
http://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Admin_Guide/changing-service-offering-for-vm.html";
2-Use licensed xen server host.
3- set Enable.dynamic.scale.vm ="True.
4-Doply vm using a template which have xen tools installed
5-Go for scaling up.
Thanks
Prashant
-----Original Message-----
From: Shanker Balan [mailto:[email protected]]
Sent: Friday, December 20, 2013 11:27 AM
To: CloudStack-Users
Subject: Re: Dynamic Scaling Of CPU and RAM not working
On 20-Dec-2013, at 11:13 am, Ryan Lei <[email protected]> wrote:
> By the way, I remember seeing this kind of error message, too.
>
> Cannot scale up the vm because of memory constraint violation:
> 0 <= memory-static-min <= memory-dynamic-min <= memory-dynamic-max <=
> memory-static-max
Let me RTFM
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Dynamic+scaling+of+CPU+and+RAM
also.
I didnt do it the first time around.
--
@shankerbalan
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