[ovirt-users] oVirt 4.0.3 (Hosted Engine) - High Availability VM not restart after auto-fencing of host.
Simone Tiraboschi
stirabos at redhat.com
Fri Sep 16 07:54:14 EDT 2016
On Fri, Sep 16, 2016 at 12:50 PM, Martin Perina <mperina at redhat.com> wrote:
>
>
> On Fri, Sep 16, 2016 at 9:26 AM, Michal Skrivanek <
> michal.skrivanek at redhat.com> wrote:
>
>>
>> > On 16 Sep 2016, at 08:29, aleksey.maksimov at it-kb.ru wrote:
>> >
>> > There are more ideas?
>> >
>> > 15.09.2016, 14:40, "aleksey.maksimov at it-kb.ru" <
>> aleksey.maksimov at it-kb.ru>:
>> >> Martin, I physically turned off the server through the iLO2. See
>> screenshots.
>> >> I did not touch Virtual Machine (KOM-AD01-PBX02) at the same time.
>> >> The virtual machine has been turned on at the time when the host shut
>> down.
>> >>
>> >> 15.09.2016, 14:27, "Martin Perina" <mperina at redhat.com>:
>> >>> Hi,
>> >>>
>> >>> I found out this in the log:
>> >>>
>> >>> 2016-09-15 12:02:04,661 INFO [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
>> (ForkJoinPool-1-worker-6) [] VM '660bafca-e9c3-4191-99b4-295ff8553488'(KOM-AD01-PBX02)
>> moved from 'Up' --> 'Down'
>> >>> 2016-09-15 12:02:04,788 INFO [org.ovirt.engine.core.dal.dbb
>> roker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-6) []
>> Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM
>> KOM-AD01-PBX02 is down. Exit message: User shut down from within the guest
>>
>> since it shut down cleanly, can you please check the guest's logs to see
>> what triggered the shutdown? In such cases it is considered a user
>> requested shutdown and such VMs are not restarted automatically
>>
>
> That's exactly what I meant by my response. From the log it's obvious
> that VM was shutdown properly, so engine will not restart it on a
> different. host. Also on most modern hosts if you execute power management
> off action, a signal is sent to OS to execute
>
> regular shutdown so VMs are also shutted down properly.
>
I understand the reason, but is it really what the user expects?
I mean, if I set HA mode on a VM I'd expect the that the engine cares to
keep it up of restart if needed regardless of shutdown reasons.
For instance, on hosted-engine the HA agent, if not in global maintenance
mode, will restart the engine VM regardless of who or why it went off.
>
>
>> We are aware of a similar issue on specific hw -
>> https://bugzilla.redhat.com/show_bug.cgi?id=1341106
>>
>> >>>
>> >>> If I'm not mistaken, this means that VM was properly shutted down
>> from within itself and in that case it's not restarted automatically. So
>> I'm curious what actions have you made to make host KOM-AD01-VM31
>> non-responsive?
>> >>>
>> >>> If you want to test fencing properly, then I suggest you to either
>> block connection between host and engine on host side and forcibly stop
>> ovirtmgmt network interface on host and watch fencing is applied.
>>
>
> Try above if you want to test fencing. Of course you can always configure
> firewall rule to drop all packets between engine and host or unplug host
> network cable.
>
> >>>
>> >>> Martin
>> >>>
>> >>> On Thu, Sep 15, 2016 at 1:16 PM, <aleksey.maksimov at it-kb.ru> wrote:
>> >>>> engine.log for this period.
>> >>>>
>> >>>> 15.09.2016, 14:01, "Martin Perina" <mperina at redhat.com>:
>> >>>>> On Thu, Sep 15, 2016 at 12:47 PM, <aleksey.maksimov at it-kb.ru>
>> wrote:
>> >>>>>> Hi Martin.
>> >>>>>> I have a stupid question. Use Watchdog device mandatory to
>> automatically start a virtual machine in host Fencing process?
>> >>>>>
>> >>>>> AFAIK it's not, but I'm not na expert, adding Arik.
>> >>>>>
>> >>>>> You need correct power management setup for the hosts and VM has
>> to be marked as highly available for sure.
>> >>>>>
>> >>>>>> 15.09.2016, 13:43, "Martin Perina" <mperina at redhat.com>:
>> >>>>>>> Hi,
>> >>>>>>>
>> >>>>>>> could you please share whole engine.log?
>> >>>>>>>
>> >>>>>>> Thanks
>> >>>>>>>
>> >>>>>>> Martin Perina
>> >>>>>>>
>> >>>>>>> On Thu, Sep 15, 2016 at 12:01 PM, <aleksey.maksimov at it-kb.ru>
>> wrote:
>> >>>>>>>> Hello oVirt guru`s !
>> >>>>>>>>
>> >>>>>>>> I have oVirt Hosted Engine 4.0.3-1.el7.centos on two CentOS 7.2
>> hosts (HP ProLiant DL 360 G5) connected to shared FC SAN Storage.
>> >>>>>>>>
>> >>>>>>>> 1. I configured Power Management for the Hosts (successfully
>> added Fencing Agent for iLO2 from my hosts)
>> >>>>>>>>
>> >>>>>>>> 2. I created new VM (KOM-AD01-PBX02) and installed Guest OS
>> (Ubuntu Server 16.04 LTS) and oVirt Guest Agent
>> >>>>>>>> (As described herein https://blog.it-kb.ru/2016/09/
>> 14/install-ovirt-4-0-part-2-about-data-center-iso-domain-log
>> ical-network-vlan-vm-settings-console-guest-agent-live-migration/)
>> >>>>>>>> In VM settings on "High Availability" I turned on the option
>> "Highly Available" and change "Priority" to "High"
>> >>>>>>>>
>> >>>>>>>> 3. Now I'm trying to check Hard-Fencing and power off my first
>> host (KOM-AD01-VM31) from his iLO (KOM-AD01-ILO31).
>> >>>>>>>>
>> >>>>>>>> Fencing successfully works and server is automatically turned
>> on, but my HA VM not started on second host (KOM-AD01-VM32).
>> >>>>>>>>
>> >>>>>>>> These events I see in the oVirt web console:
>> >>>>>>>>
>> >>>>>>>> Sep 15, 2016 12:08:13 PM Host KOM-AD01-VM31 power
>> management was verified successfully.
>> >>>>>>>> Sep 15, 2016 12:08:13 PM Status of host KOM-AD01-VM31
>> was set to Up.
>> >>>>>>>> Sep 15, 2016 12:08:05 PM Executing power management
>> status on Host KOM-AD01-VM31 using Proxy Host KOM-AD01-VM32 and Fence Agent
>> ilo:KOM-AD01-ILO31.holding.com.
>> >>>>>>>> Sep 15, 2016 12:05:48 PM Host KOM-AD01-VM31 is rebooting.
>> >>>>>>>> Sep 15, 2016 12:05:48 PM Host KOM-AD01-VM31 was started
>> by SYSTEM.
>> >>>>>>>> Sep 15, 2016 12:05:48 PM Power management start of Host
>> KOM-AD01-VM31 succeeded.
>> >>>>>>>> Sep 15, 2016 12:05:41 PM Executing power management
>> status on Host KOM-AD01-VM31 using Proxy Host KOM-AD01-VM32 and Fence Agent
>> ilo:KOM-AD01-ILO31.holding.com.
>> >>>>>>>> Sep 15, 2016 12:05:19 PM Executing power management
>> start on Host KOM-AD01-VM31 using Proxy Host KOM-AD01-VM32 and Fence Agent
>> ilo:KOM-AD01-ILO31.holding.com.
>> >>>>>>>> Sep 15, 2016 12:05:19 PM Power management start of Host
>> KOM-AD01-VM31 initiated.
>> >>>>>>>> Sep 15, 2016 12:05:19 PM Auto fence for host
>> KOM-AD01-VM31 was started.
>> >>>>>>>> Sep 15, 2016 12:05:11 PM Executing power management
>> status on Host KOM-AD01-VM31 using Proxy Host KOM-AD01-VM32 and Fence Agent
>> ilo:KOM-AD01-ILO31.holding.com.
>> >>>>>>>> Sep 15, 2016 12:05:04 PM Executing power management
>> status on Host KOM-AD01-VM31 using Proxy Host KOM-AD01-VM32 and Fence Agent
>> ilo:KOM-AD01-ILO31.holding.com.
>> >>>>>>>> Sep 15, 2016 12:05:04 PM Host KOM-AD01-VM31 is non
>> responsive.
>> >>>>>>>> Sep 15, 2016 12:02:32 PM Host KOM-AD01-VM31 is not
>> responding. It will stay in Connecting state for a grace period of 60
>> seconds and after that an attempt to fence the host will be issued.
>> >>>>>>>> Sep 15, 2016 12:02:32 PM VDSM KOM-AD01-VM31 command
>> failed: Heartbeat exeeded
>> >>>>>>>> Sep 15, 2016 12:02:04 PM VM KOM-AD01-PBX02 is down. Exit
>> message: User shut down from within the guest
>> >>>>>>>>
>> >>>>>>>> What am I doing wrong? Why HA VM not start on a second host?
>> >>>>>>>> _______________________________________________
>> >>>>>>>> Users mailing list
>> >>>>>>>> Users at ovirt.org
>> >>>>>>>> http://lists.ovirt.org/mailman/listinfo/users
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