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2015-02-05 12:50:17 -0500 commented answer Openstack Instance High Availability(How to make pets VM highly available?)

Hi Mzoorikh. Thanks for your useful answer.

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2015-02-03 09:37:45 -0500 commented answer Openstack Instance High Availability(How to make pets VM highly available?)

Thanks. I think the first method(using nova evacuate + monitoring tools), is the most strightforward mechanism.

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2015-02-02 08:06:59 -0500 commented answer Openstack Instance High Availability(How to make pets VM highly available?)

I am looking for open source one.

2015-02-02 07:53:29 -0500 commented answer Openstack Instance High Availability(How to make pets VM highly available?)

As mentioned in my post, I don't want to use any commercial products such as vmware solutions.

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2015-02-01 20:37:18 -0500 asked a question Openstack Instance High Availability(How to make pets VM highly available?)

Hi openstack experts,

As my question title implies, I am seeking for a stable way of high availability in my non-cloud-ready (pets) instances when non-commercial hypervisors(e.g. ESXi) is used(for example in the case of KVM). I am looking to answer the following primary question:

How to bring instances(Pets) online in the case of host failure in openstack?

I search alot on the web, and I found the following available methods for (pets) instance HA in openstack:

  • Use nova evacuate command: This is admin task and is not automatic way of instance fail-over
  • Use heat service/application/instance level high availability: No applicable document is found for this method
  • Neutron + Allowed address pair: Only applied to stateless applications(e.g. webserver) and is not applicable to for example wordpress instance with build-in mysql database
  • vm-ensembles: Is a blueprint and not implemented

All of these methods have considerable disadvantages metioned above.

So, What is the best solution for VM-High availability in openstack?

Is there any other better methods?

Thanks in advance.

(By the use of pets, I mean: Stateful Legacy Applications that are not cloud ready)

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