Hi James,
I think you possibly have over-configured your KVM hosts. If you use NFS (and
no clustered file system like CLVM) then there should be no need to configure
STONITH. CloudStack takes care of your HA, so this is not something you offload
to the KVM host.
(As mentioned the only time I have played with STONITH and CloudStack was for
CLVM – and I eventually found it not fit for purpose, too unstable and causing
too many issues like you describe. Note this was for block storage though – not
NFS).
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 28/10/2017, 03:40, "Ivan Kudryavtsev" <kudryavtsev...@bw-sw.com> wrote:
Hi. If the node losts nfs host it reboots (acs agent behaviour). If you
really have 3 storages, you'll go clusterwide reboot everytime your host is
down.
28 окт. 2017 г. 3:02 пользователь "Simon Weller" <swel...@ena.com.invalid>
написал:
> Hi James,
>
>
> Can you elaborate a bit further on the storage? You say you're running NFS
> on all 3 nodes, can you explain how it is setup?
>
> Also, what version of ACS are you running?
>
>
> - Si
>
>
>
>
> ________________________________
> From: McClune, James <mcclu...@norwalktruckers.net>
> Sent: Friday, October 27, 2017 2:21 PM
> To: users@cloudstack.apache.org
> Subject: Problems with KVM HA & STONITH
>
> Hello Apache CloudStack Community,
>
> My setup consists of the following:
>
> - Three nodes (NODE1, NODE2, and NODE3)
> NODE1 is running Ubuntu 16.04.3, NODE2 is running Ubuntu 16.04.3, and
NODE3
> is running Ubuntu 14.04.5.
> - Management Server (running on separate VM, not in cluster)
>
> The three nodes use KVM as the hypervisor. I also configured primary and
> secondary storage on all three of the nodes. I'm using NFS for the primary
> & secondary storage. VM operations work great. Live migration works great.
>
> However, when a host goes down, the HA functionality does not work at all.
> Instead of spinning up the VM on another available host, the down host
> seems to trigger STONITH. When STONITH happens, all hosts in the cluster
go
> down. This not only causes no HA, but also downs perfectly good VM's. I
> have read countless articles and documentation related to this issue. I
> still cannot find a viable solution for this issue. I really want to use
> Apache CloudStack, but cannot implement this in production when STONITH
> happens.
>
> I think I have something misconfigured. I thought I would reach out to the
> CloudStack community and ask for some friendly assistance.
>
> If there is anything (system-wise) you request in order to further
> troubleshoot this issue, please let me know and I'll send. I appreciate
any
> help in this issue!
>
> --
>
> Thanks,
>
> James
>
dag.sonst...@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue
