From a CloudStack perspective it is only the NetScalers that autoscale, the F5's do not offer that functionality in Cloudstack. I was asked this exact question recently at the Cloudstack European meetup. Cloudstack is absolutely scalable, both horizontally and vertically. If you are not able to use the Netscalers in your cloud environment, then you could script the autoscaling yourself. The challenges I think people face is to automatically get your app configured ready to autoscale before deploying the app in your Cloudstack environment. You can use templates, but I would recommend a config tool like chef or puppet to set the configuration for you, then use the Cloudstack API to deploy those VMs and dynamically configure your application settings to suit the environment. Like Geoff mentioned, create the VMs when your load hits a limit to autoscale, then destroy them when the load drops..
Oliver Leach InstaCompute -----Original Message----- From: Jerry Jiang [mailto:jerry.ji...@tyxtech.com] Sent: Friday, April 19, 2013 2:24 AM To: users@cloudstack.apache.org Subject: Re: CS supports elastic features? This situation only works for stateless session connection architectures like web service. If so, that means CS need to notify Loadbalancers the scale-up happens so that LB can redirect Load to new instance. Does it work for handware LB(F5?) as well? Jerry Jiang -----邮件原件----- 发件人: Mathias Mullins [mailto:mathias.mull...@citrix.com] 发送时间: 2013年4月19日 星期五 2:10 收件人: users@cloudstack.apache.org 主题: Re: CS supports elastic features? I think it should be noted that this feature is currently only available with the NetScaler load balancer. This is not a CS standalone feature if that is what you are looking for Wang. Matt On 4/18/13 12:49 PM, "Geoff Higginbottom" <geoff.higginbot...@shapeblue.com> wrote: >Hi Wang, > >I guess you might be right, and if so then then answer is still yes as >using the AutoScaling features, CloudStack can create new VMs when the >CPU, RAM or Bandwidth usage exceeds set parameters, and then destroy >those VMs when the load drops again - truly elastic > >Regards > >Geoff Higginbottom > >D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 > >geoff.higginbot...@shapeblue.com > > >-----Original Message----- >From: Wang Fei [mailto:pytho...@gmail.com] >Sent: 18 April 2013 16:31 >To: users@cloudstack.apache.org >Subject: Re: CS supports elastic features? > >I guess the Elastic he means is auto-scale instance based on the load >of instance. > > > > >---- >best regards > > >On Thu, Apr 18, 2013 at 3:54 PM, Geoff Higginbottom < >geoff.higginbot...@shapeblue.com> wrote: > >> Hi Jerry, >> >> You can scale out the storage and compute layer horizontally to give >> you massive scale should you require it. >> >> A user can create as many VMs and consume as much storage as the >> Cloud Admins allow. >> >> You can also burst out to other clouds such as AWS giving you even >> more options. >> >> Regards >> >> Geoff Higginbottom >> >> D: +44 20 3603 0542 | S: +44 20 3603 0540 | M: +447968161581 >> >> geoff.higginbot...@shapeblue.com >> >> >> -----Original Message----- >> From: Jerry Jiang [mailto:jerry.ji...@tyxtech.com] >> Sent: 18 April 2013 08:46 >> To: users@cloudstack.apache.org >> Subject: CS supports elastic features? >> >> Hello all, >> >> >> >> Would like to know if CS support Elastic features for computing >> resource or storage resource? >> >> >> >> jerry >> >> This email and any attachments to it may be confidential and are >> intended solely for the use of the individual to whom it is addressed. >> Any views or opinions expressed are solely those of the author and do >> not necessarily represent those of Shape Blue Ltd or related >> companies. If you are not the intended recipient of this email, you >> must neither take any action based upon its contents, nor copy or >> show it to anyone. Please contact the sender if you believe you have >> received this email in error. Shape Blue Ltd is a company >> incorporated in England & Wales. ShapeBlue Services India LLP is >> operated under license from Shape Blue Ltd. ShapeBlue is a registered trademark. >> >> >This email and any attachments to it may be confidential and are >intended solely for the use of the individual to whom it is addressed. >Any views or opinions expressed are solely those of the author and do >not necessarily represent those of Shape Blue Ltd or related companies. >If you are not the intended recipient of this email, you must neither >take any action based upon its contents, nor copy or show it to anyone. >Please contact the sender if you believe you have received this email >in error. >Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue >Services India LLP is operated under license from Shape Blue Ltd. >ShapeBlue is a registered trademark.
