For those interested in CloudStack's functionality in this area, they provide restart of hypervisors and VMs as described in https://cwiki.apache.org/confluence/display/CLOUDSTACK/High+Availability+Developer's+Guide
Tim > -----Original Message----- > From: Amrith Kumar [mailto:amr...@tesora.com] > Sent: 29 May 2014 20:39 > To: Jay Pipes; openstack@lists.openstack.org; hossein zabolzadeh > Subject: Re: [Openstack] Legacy Application Run on top of OpenStack > > Hi Hossein, > > You can get HA on OpenStack for things like storage just as you would in your > existing data center. Unless you are running some highly available or fault > tolerant hardware in your data center, I believe you will see comparable > reliability in an OpenStack cloud, at least with respect to computing. > > I am interpreting Jay's answer below to say that you can build additional > availability through scale-out paradigms but that may be inconsistent with > your > desire to make no change to your applications. > > If what you are looking for is a fault tolerant offering in the OpenStack > cloud, > maybe you want to look at something like Stratus (I'm sure someone from > Stratus can respond and tell you more). > > -amrith > > | -----Original Message----- > | From: Jay Pipes [mailto:jaypi...@gmail.com] > | Sent: Thursday, May 29, 2014 1:56 PM > | To: openstack@lists.openstack.org > | Subject: Re: [Openstack] Legacy Application Run on top of OpenStack > | > | On 05/29/2014 05:12 AM, hossein zabolzadeh wrote: > | > Hi there. > | > I am baffling between Cloudstack and Openstack to select. My > | > Datacenter has more than 10 legacy application, which need to be run > | > on top of the best matched CMP(Cloud Management Platform). I am > | > search a lot and I select openStack and CloudStack at the end. But, > | > I can not make a final decision about these two CMPs. I don't want > | > to make any change to my legacy application codebase. So, my exact > concern is: > | > "How legacy applications can be run on OpenStack without any HA and > | > resiliancy problems?" As we know cloud-ready applications are fully > | > awared from underlying infrastucture, but what about non-cloud-ready > | > apps(Legacy Applications)? > | > CloudStack is DC virtualization cloud solution(Vcloud Like Cloud > | > Solution) that handle all of the HA and resiliancy in the > | > infrastructure layer, but the paradigm in openStack is > | > infrastructure provisioning(AWS like cloud), which the HA problems > | > shoud be addressed > | in application layer. > | > So at general, how openStack support legacy applications to run > | > without any HA problems? > | > Thanks in advance. > | > | Hi Hossein, > | > | The short answer is that the idea behind "legacy" applications -- i.e. > | that applications should rely on infrastructure to handle reliability > | of the application in a scale-up-only manner -- is not something that > | the OpenStack platform really encourages. > | > | We encourage scale-out behaviour and application development > | methodologies that give the scaling, reliability, and resiliency > | control to the application deployer to implement as they see fits best their > application. > | It's not a one-size-fits-all world, and as such, there are plenty of > | application architectures and deployment methodologies that are > | supported in cloudy environments; OpenStack doesn't pick or choose one over > another. > | > | Best, > | -jay > | > | _______________________________________________ > | Mailing list: http://lists.openstack.org/cgi- > | bin/mailman/listinfo/openstack > | Post to : openstack@lists.openstack.org > | Unsubscribe : http://lists.openstack.org/cgi- > | bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
