Open Stack

Got it thanks very much, Sampath!

From:  Sam P <sam47priya at gmail.com>
Reply-To:  "OpenStack Development Mailing List (not for usage questions)"
<openstack-dev at lists.openstack.org>
Date:  Saturday, October 6, 2018 at 8:29 PM
To:  "OpenStack Development Mailing List (not for usage questions)"
<openstack-dev at lists.openstack.org>
Subject:  Re: [openstack-dev] [masakari][congress] what is a host?

> Hi Eric,
>  
> (1) "virtual machine" is bug. This need to be corrected as physical machine or
> hypervisor.
>       Masakari host is a physical host/hypervisor. I will correct this.
> 
> (2) Not through masakari APIs. You have to add metadata key 'HA_Enabled=True'
> to each VM by using nova API.
>      Masakeri monitors check for failures and send notification to masakari
> API if detected any failure (i.e host, VM or process failures).
>      In host failure (hypervisor down) scenario, Masakari engine get the VM
> list on that hypervisor and start evacuate VMs.
>      Operator can configure masakari to evacuate all VMs or only the VMs with
> the metadata key   'HA_Enabled=True.
>      Please see the config file [1] section [host_failure] for more details.
> 
> Let me know if you need more info on this.
> 
> [1] https://docs.openstack.org/masakari/latest/sample_config.html
> 
> --- Regards,
> Sampath
> 
> 
> 
> On Sun, Oct 7, 2018 at 8:55 AM Eric K <ekcs.openstack at gmail.com> wrote:
>> Hi all, I'm working on a potential integration between masakari and
>> congress. But I am stuck on some basic usage questions I could not
>> answer in my search of docs and demos. Any clarification or references
>> would be much appreciated!
>> 
>> 1. What does a host refer to in masakari API? Here's the explanation in API
>> doc:
>> "Host can be any kind of virtual machine which can have compute
>> service running on it."
>> (https://developer.openstack.org/api-ref/instance-ha/#hosts-hosts)
>> 
>> So is a masakari host usually a nova instance/server instead of a
>> host/hypervisor?
>> 
>> 2. Through the masakari api, how does one go about configuring a VM to
>> be managed by masakari instance HA?
>> 
>> Thanks so much!
>> 
>> Eric Kao
>> 
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