default virtual router HA behavior

[Gary Dixon <Ga...@quadris.co.uk.INVALID>]

HI all

We have a situation where our ACS mgmt. server is in one site and communicates with Ubuntu KVM hosts in other sites over a VPN. We see that if the VPN is interrupted briefly – virtual routers spawn on 2 KVM hosts which in turn corrupts the VR and it needs to be rebuilt. Is there any detailed documentation on how exactly HA works in Cloudstack at the virtual machine level ?

BR

Gary



Gary Dixon
Senior Technical Consultant
T:  0161 537 4980
W: www.quadris.co.uk
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Re: default virtual router HA behavior

[Daan Hoogland <da...@gmail.com>]

Gary,
From a functional POV [1]
In [2] you can find a (rather old) technical description.
Personally I would still read the code to understand the behaviour, so
improvements are welcome at [3]

[1]
http://docs.cloudstack.apache.org/projects/cloudstack-administration/en/4.8/reliability.html
[2]
https://cwiki.apache.org/confluence/display/CLOUDSTACK/High+Availability+Developer%27s+Guide
[3] https://github.com/apache/cloudstack-documentation/

On Mon, Aug 22, 2022 at 2:13 PM Gary Dixon <Ga...@quadris.co.uk.invalid>
wrote:

> HI all
>
>
>
> We have a situation where our ACS mgmt. server is in one site and
> communicates with Ubuntu KVM hosts in other sites over a VPN. We see that
> if the VPN is interrupted briefly – virtual routers spawn on 2 KVM hosts
> which in turn corrupts the VR and it needs to be rebuilt. Is there any
> detailed documentation on how exactly HA works in Cloudstack at the virtual
> machine level ?
>
>
>
> BR
>
>
>
> Gary
>
>
>
>
> Gary Dixon​
> Senior Technical Consultant
> T:  *0161 537 4980* <0161%20537%204980>
> W: www.quadris.co.uk
> The information contained in this e-mail from Quadris may be confidential
> and privileged for the private use of the named recipient.  The contents of
> this e-mail may not necessarily represent the official views of Quadris.
> If you have received this information in error you must not copy,
> distribute or take any action or reliance on its contents.  Please destroy
> any hard copies and delete this message.
>


-- 
Daan