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From Sam Ceylani <>
Subject Re: HA issue and Xen resets
Date Wed, 22 Oct 2014 17:19:58 GMT
ok, can you also migrate your to another xenhost? goto routers and migrate it? is your vm able
to communicate?

Sent from my iPhone

> On Oct 22, 2014, at 12:56 PM, Andrei Mikhailovsky <> wrote:
> Yes, works perfectly well and pretty quick. 
> Andrei 
> ----- Original Message -----
>> From: "Sam Ceylani" <>
>> To:
>> Sent: Wednesday, 22 October, 2014 5:46:42 PM
>> Subject: RE: HA issue and Xen resets
>> Can you live migrate guest machine to another xenserver host?
>> -----Original Message-----
>> From: Garith Dugmore []
>> Sent: Wednesday, October 22, 2014 10:54 AM
>> To:
>> Subject: HA issue and Xen resets
>> Hi All,
>> I'm new to cloudstack and busy testing out ACS 4.3.1 on Centos 6.4
>> using Xenserver 6.2. I have the management server setup and have 2
>> xen servers that I'm testing out at the moment; specifically the HA
>> functionality.
>> After getting an instance up and running I yanked the network cable
>> out of the one xen server and awaited the HA awesomeness to kick in.
>> Both hosts still remained in "Up" state even though the one was no
>> longer pingable and the instance that was hosted on that xen host
>> still showed "Running" even though I also couldn't ping it. After
>> some reading one suggestion was setting 'alert.wait' to 30 and
>> restarting cloudstack-management. After that didn't seem to do
>> anything after waiting a while I rebooted the management server all
>> together and found that both hosts were marked as disconnected.
>> I've tried going in and out of maintenance mode and ended up deleting
>> the one xen host that was still reachable thinking I could just
>> re-add it but I received an error in doing so. I have read somewhere
>> that once you've either reinstalled the management server or removed
>> a xen host you need to re-install the xen host. Is this true? I was
>> hoping for a factory reset command of some sort.
>> Besides my obvious HA problems and host disconnect issues which I'd
>> love some pointers on are there any pointers on Xen server resets?
>> Note I have attempted a 4.4.0 install on centos and after a couple
>> issues that I can no longer recall I ended up with a way easier
>> install on 4.3.1 which is why I've stuck with it for now.
>> Any pointers will be greatly appreciated. Willing to try anything!
>> --
>> Garith Dugmore
>> South African Astronomical Observatory
>> and Southern African Large Telescope

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