On Mon, Jul 2, 2012 at 2:08 PM, Ram Ganesh <[email protected]> wrote: > Hi All, > > Briefly talking about the feature - AutoScale feature allows you to scale up > or scale down the virtual instances that are being load balanced by load > balancers like NetScaler based on certain conditions. This feature is an > extension to the ELB feature in CloudStack. This feature is similar to AWS > autoscale feature except that monitoring of server's(guest vm) health is done > by load balancers like NetScaler and provisioning is done by CloudStack. > Monitoring done by loadbalancers has couple of benefits > - Loadbalancers are better placed to understand the health of the > server as traditionally LB devices had monitoring capability inbuilt in it. > - Decisions can be based not just on certain conventional counters > like CPU, Memory etc but also on network counters like response time, > bandwidth, connections etc > - Decreases the load on CloudStack management server.
But that inherently limits where AutoScale will work. This means all of this work is inherently very niche, can only be tested by folks with NS hardware, and only utilized by the same folks - and autoscaling could be inherently useful in other situations that don't have LB implications. CloudStack has inherently been hypervisor agnostic, is there a reason not to be LB agnostic as well?
