Hi Parth
Thanks for that.
I am a beginner too when it comes to this.
Am currently rebuilding so will update this thread when I have retested
Jon
From: Parth Patel
Sent: 15 March 2018 14:37
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
Hi Jon
the host and HA-enabled VM has
stopped executing and it restarts the HA-enabled VM on another host.
Hope this helps.
Regards,
Parth Patel.
>
>
>
> From: Parth Patel
> Sent: 14 March 2018 14:36
> To: users@cloudstack.apache.org
> Subjec
not managed to get any failover of VMs no matter what I try
Jon
From: Parth Patel
Sent: 14 March 2018 14:36
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
Hi Paul and Adrina,
I don't know the functioning of Host-HA features but what Paul explaine
KVM HostHA was developed to bring it to a closer parity with how VMware
vSphere handles its HA.
Basically in old model - there were several corner cases where CloudStack
did not know whether
Hypervisor crashed or just lost connectivity to Management server.
We’ve added a logic to make sure that
; it's down (avoid VM corruption, by doint STONITH to that node) and then
> >>> start HA VMs on ohter hosts.
> >>>
> >>> I understand there might be exceptions as I have right now (4.8) -
> >> libvirt
> >>> get stuck (librbd exception or similar) so agent get'
ine... (except DB get messed up, all NICs loose
>>> isolation_uri, VR's loose MAC addresses and other IP addresses etc...)
>>>
>>>
>>> Thanks
>>> Andrija
>>>
>>>
>>>
>>>
>>> On 14 March 2018 at 10:57,
> >
> > On 14 March 2018 at 10:57, Jon Marshall wrote:
> >
> >> That would make sense.
> >>
> >>
> >> I have another server being used for something else at the moment so I
> >> will add that in and update this thread when I have tes
hanks
> Andrija
>
>
>
>
> On 14 March 2018 at 10:57, Jon Marshall wrote:
>
>> That would make sense.
>>
>>
>> I have another server being used for something else at the moment so I
>> will add that in and update this thread when I have tested
ke sense.
>
>
> I have another server being used for something else at the moment so I
> will add that in and update this thread when I have tested
>
>
> Jon
>
>
>
> From: Paul Angus
> Sent: 14 March 2018 09:16
> To: users@clou
That would make sense.
I have another server being used for something else at the moment so I will add
that in and update this thread when I have tested
Jon
From: Paul Angus
Sent: 14 March 2018 09:16
To: users@cloudstack.apache.org
Subject: RE: KVM HostHA
08:36
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
Hi Paul
My testing does indeed end up with the failed host in maintenance mode but the
VMs are never migrated. As I posted earlier the management server seems to be
saying there is no other host that the VM can be migrated to.
Coup
just can't get this to work at the
moment. If I do eventually get it working I will do a write up for others with
same issue :)
From: Paul Angus
Sent: 14 March 2018 07:45
To: users@cloudstack.apache.org
Subject: RE: KVM HostHA
Hi Parth,
Two answer your ques
issue :)
From: Paul Angus
Sent: 14 March 2018 07:45
To: users@cloudstack.apache.org
Subject: RE: KVM HostHA
Hi Parth,
Two answer your questions, VM-HA does not restart VMs on an alternate host if
the original host goes down. The management server (without host-HA) cannot
tell what happen
.
paul.an...@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue
-Original Message-
From: Parth Patel
Sent: 14 March 2018 05:05
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
Hi Paul,
Thanks for the clarification. I currently don&#
ue
>
>
>
>
> -Original Message-
> From: Parth Patel
> Sent: 13 March 2018 16:57
> To: users@cloudstack.apache.org
> Cc: Jon Marshall
> Subject: Re: KVM HostHA
>
> Hi Jon and Victor,
>
> I think the management server pings your host using ipmi (I reall
derstanding of host HA was the management server monitored the
> compute nodes using ipmitool and if it did not get a response because
> the host was down it would fence off that host and move the VMs to an
> active compute node.
> >
> > This is obviously too simplistic so could s
17/06/logo.png]<
> http://www.shapeblue.com/>
> >
> > Shapeblue - The CloudStack Company<http://www.shapeblue.com/>
> > www.shapeblue.com
> > Rapid deployment framework for Apache CloudStack IaaS Clouds. CSForge is
> a framework developed by Shap
ng against ?
From: Paul Angus
Sent: 13 March 2018 07:01
To: users@cloudstack.apache.org
Subject: RE: KVM HostHA
Hi all,
One small note, unplugging the management NIC will only cause an HA event if
the storage is running over that NIC also.
Is the storage is over
ubject: RE: KVM HostHA
Hi all,
One small note, unplugging the management NIC will only cause an HA event if
the storage is running over that NIC also.
Is the storage is over a separate NIC then, the guest VMs will continue to run
when the mgmt. NIC is unplugged, Host HA will detect the disk ac
Sent: 13 March 2018 07:01
To: users@cloudstack.apache.org
Subject: RE: KVM HostHA
Hi all,
One small note, unplugging the management NIC will only cause an HA event if
the storage is running over that NIC also.
Is the storage is over a separate NIC then, the guest VMs will continue to run
March 2018 17:35
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
>
> Hi Jon,
>
> As I said, in my case, making the host HA didn't work but by just
> having a HA VM running on host and executing - (WARNING) "echo c >
> /proc/sysrq-trigger" to
as down (which it does).
>
>
> I am in testing mode so I think I will just go and pull the power and see
> what happens :)
>
>
> Thanks
>
>
> Jon
>
>
>
> From: Paul Angus
> Sent: 12 March 2018 15:31
> To: users@cloudst
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
Hi Paul
Thanks for the response.
I think I am not understanding how it was meant to work then. My understanding
was that the manager used ipmitool to just keep querying the compute nodes as
to their status so I assumed it didn't matter
2 March 2018 15:15
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
I have the same issue here and am not entirely sure what the behaviour should
be.
I have one manager node and 2 compute nodes running 4.11 with ipmi working
correctly.
>From the UI under HA -
HA Enabled Yes
HA Stat
Kind regards,
Paul Angus
paul.an...@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue
-Original Message-
From: Jon Marshall
Sent: 12 March 2018 15:15
To: users@cloudstack.apache.org
Subject: Re: KVM HostHA
I have the same issue here and a
y help much appreciated
From: victor
Sent: 07 March 2018 17:01
To: users@cloudstack.apache.org
Subject: KVM HostHA
Hello Guys,
I have installed cloudstack 4.11. I have enabled HA for each hosts I
have added. I have also added ipmi successfully (using ipmi driver).
The hosts are sho
Hi Victor,
I too had a similar failover requirement. I also got on the path of making
an HA-enabled KVM host in CS 4.9 after doing the same steps you performed
but in CS 4.9 where the agent got in "Alert" state but not in "Down" state.
However, if your requirement is simply that in case a host exe
March 2018 08:36
To: users@cloudstack.apache.org; Andrija Panic
Subject: Re: KVM HostHA
Hello Andrija,
Yes I am doing the same test as you mentioned ie unplug NIC in one of the host
and observer the action of VM's in that host. But in my test the VM's didn't
get started in another
or
Sent: 07 March 2018 17:02
To: users@cloudstack.apache.org
Subject: KVM HostHA
Hello Guys,
I have installed cloudstack 4.11. I have enabled HA for each hosts I have
added. I have also added ipmi successfully (using ipmi driver). The hosts are
showing like the following.
===
HA Enabled
Hello Andrija,
Yes I am doing the same test as you mentioned ie unplug NIC in one of
the host and observer the action of VM's in that host. But in my test
the VM's didn't get started in another host.
Regards
Victor
On 03/07/2018 11:52 PM, Andrija Panic wrote:
Hi Victor,
zero experience he
Hi Victor,
zero experience here with 4.11 in general, but what are you expecting to
happen ?
you powered off a host, so nothing for IPMI driver to do - host is down
already, no host HA actions are expected afaik.
I guess you might have have wanted to i.e. unplug NIC (cause network issues
on MGMT
shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue
-Original Message-
From: victor
Sent: 07 March 2018 17:02
To: users@cloudstack.apache.org
Subject: KVM HostHA
Hello Guys,
I have installed cloudstack 4.11. I have enabled HA for each hosts I have
Hello Guys,
I have installed cloudstack 4.11. I have enabled HA for each hosts I
have added. I have also added ipmi successfully (using ipmi driver).
The hosts are showing like the following.
===
HA Enabled Yes
HA StateAvailable
HA Provider kvmhaprovider
==
Also
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