Re: Live Migrating OpenStack VMs between physical nodes


when you want to migrate or evacuate hosts
you will notice that bosh will try to respawn the vms/jobs he created because of the health monitor

so what we normally do is disable the bosh health monitor until the the nodes are done


-----Original Message-----
From: Dmitriy Kalinin <dkalinin(a)<mailto:Dmitriy%20Kalinin%20%3cdkalinin(a)>>
Reply-to: Discussions about the Cloud Foundry BOSH project. <cf-bosh(a)>
To: Discussions about the Cloud Foundry BOSH project. <cf-bosh(a)<mailto:%22Discussions%20about%20the%20Cloud%20Foundry%20BOSH%20project.%22%20%3ccf-bosh(a)>>
Subject: [cf-bosh] Re: Live Migrating OpenStack VMs between physical nodes
Date: Tue, 1 Sep 2015 10:48:06 -0700

OpenStack CPI does not care / is not aware on which node VMs are running.

As long as VM remains powered on and accessible you should not have a problem. In practice you may run into certain OpenStack limitations which may prevent moving VMs around. I vaguely remember presence of a config drive (CPI is configured to bootstrap VMs via config drive) may limit VM relocation.
On Tue, Sep 1, 2015 at 10:12 AM, Josh Ghiloni <jghiloni(a)<mailto:jghiloni(a)>> wrote:
Hi All,

I've had a question from my client's IT department that I thought I would run by you before actually just trying it. We're running open source Cloud Foundry on OpenStack, and the admin was wondering if the CPI could handle a particular VM (or a set of vms) being transferred from one physical node to another for something like maintenance on the original node.

My first thought is that it shouldn't affect anything in the CPI, since OpenStack is handling the VM provisioning and locating, but I was curious if anyone had practical experience with this.


Josh Ghiloni

Senior Consultant

303.932.2202<tel:303.932.2202> o | 303.590.5427<tel:303.590.5427> m | 303.565.2794<tel:303.565.2794> f


ECS Team

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