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From <nicolas.lamira...@orange.com>
Subject Re: Proofreading of our procedure to cleanly re-create vrouters and restart CloudStack on a running VMware cluster after an interruption
Date Fri, 26 Jul 2013 09:36:41 GMT
Hi,
Thanks for your help. We made another test using the API (stopRouter
with force=true) and restart network. All resources have been released.
We need to update the CloudStack's database in the same state as the
VMWare's database (like : VM host, VM state, .... )
We would like to make this request :

mysql> update vm_instance set state = 'Running', host_id = 17,
last_host_id = 17 where id = 43;

to update the hostID and the lastHostID of each virtual machine.
Could there be any edge effects ?

Regards.

Le 26/07/2013 04:56, Alex Huang a écrit :
> Instead of doing that, always call stop with the forced flag = true.  That causes CloudStack
to do a best effort to stop the vm but
> even if it cannot be stopped, CloudStack will cleanup all resources.
> 
> --Alex
> 
>> -----Original Message-----
>> From: Alena Prokharchyk [mailto:Alena.Prokharchyk@citrix.com]
>> Sent: Thursday, July 25, 2013 1:27 PM
>> To: Sebastien Goasguen; dev@cloudstack.apache.org; Ahmad Emneina
>> Subject: Re: Proofreading of our procedure to cleanly re-create vrouters and
>> restart CloudStack on a running VMware cluster after an interruption
>>
>> Its incorrect that system vms are being 'stopped' by modifying the DB. In this
>> case CS doesn't release the resources - that's why you see private ip address
>> still being allocated. So the correct way to do things would be:
>>
>>
>>   1.  Don't stop anything
>>   2.  Upgrade
>>   3.  Run restartNetwork&clenaup=true for all the networks. It will re-create
>> the routers. Old ones will get destroyed (and their resources will be released
>> - ip address, cpu, ram, etc - in the CS DB); the new routers will get re-
>> created.
>>
>> -Alena.
>>
>> From: Sebastien Goasguen <runseb@gmail.com<mailto:runseb@gmail.com>>
>> Date: Thursday, July 25, 2013 12:13 PM
>> To: "dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>"
>> <dev@cloudstack.apache.org<mailto:dev@cloudstack.apache.org>>, Ahmad
>> Emneina
>> <Ahmad.Emneina@citrix.com<mailto:Ahmad.Emneina@citrix.com>>, Alena
>> Prokharchyk
>> <alena.prokharchyk@citrix.com<mailto:alena.prokharchyk@citrix.com>>
>> Subject: Re: Proofreading of our procedure to cleanly re-create vrouters and
>> restart CloudStack on a running VMware cluster after an interruption
>>
>> Ahmad, Alena, you might have some thoughts on Guillaume's email below ?
>>
>> -sebastien
>>
>> On Jul 25, 2013, at 1:57 PM, Fraysse Guillaume
>> <gfraysse.ml@gmail.com<mailto:gfraysse.ml@gmail.com>> wrote:
>>
>> Hello everyone,
>> We had an unexpected problem on our infrastructure while we were
>> upgrading CloudStack from 2.2.13 to 4.1 which led us to stop CloudStack
>> before being able to finalize the update.We still have the vrouters to update
>> but have a production platform that is a bit messy.
>> We're trying to find out how to finish he upgrade of the vrouters and restart
>> CloudStack when the VMware cluster has "lived his life" in the meantime and
>> some VM are in different states that when CLoudStack was stopped.
>> Here is the procedure we are testing in a preproduction environment, any
>> advice/comment would be greatly appreciated as this is a risky operation to
>> perform on our production environment:
>> * Removing all vRouters from vCenter
>> * Updating vRouters states to < Stopped > in CloudStack database :
>> mysql> update vm_instance set state = 'Stopped' where state <>
>> 'Expunging' and type = 'DomainRouter';
>> * Get the list of all vms :
>> mysql> select id, instance_name, state from vm_instance where state <>
>> 'Expunging' and type = 'User';
>> * Updating table vm_instance to set the correct states and hosts of vms.
>> Example of SQL query :
>> mysql> update vm_instance set state = 'Running', host_id = 17,
>> last_host_id = 17 where id = 43;
>> * Restarting CloudStack
>> * Restarting all networks with < cleanup > option via CloudStack API.
>> Example of HTTP request :
>> $ curl
>> http://cloudstack:8096/?command=restartNetwork\&cleanup=true\&respo
>> nse=json\&id=227
>> This procedure seems to be working except for a little detail : we see that we
>> use more Management IP adresses than expected, like they are not de-
>> allocated, could it be a side effect of the procedure ?
>> If you see any problem in this procedure or any problem it might lead us to,
>> your help would be appreciated.
>> Best regards,
>> Guillaume
>>
> 
> 
> 


-- 
Nicolas Lamirault

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