2:46 p.m.
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I just recently had the hardware that acts as the engine crash. I have a blinking amber
light on the server. I have servers on the remaining hosts. How do I, or can I use vdsm to
interact with the VMs that are still present on those hosts without the engine?
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<html><body><div style="font-family: times new roman, new york, times,
serif; font-size: 12pt; color: #000000"><div>I just recently had the
hardware that acts as the engine crash. I have a blinking amber light on the server. I
have servers on the remaining hosts. How do I, or can I use vdsm to interact with the VMs
that are still present on those hosts without the
engine?<br></div></div></body></html>
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4:23 p.m.
if those vms are still running on your Hosts, you can use the engine to
----- Original Message -----
From: "Yair Zaslavsky" <yzaslavs(a)redhat.com>
To: "Maurice James" <mjames(a)media-node.com>
Cc: "users" <users(a)ovirt.org>, "Maor Lipchuk"
<mlipchuk(a)redhat.com>, "Allon Mureinik" <amureini(a)redhat.com>
Sent: Wednesday, September 10, 2014 4:34:41 PM
Subject: Re: [ovirt-users] Engine Hardware Crash
Just to make sure, this means that when it comes to file system , etc.. you also have your
storage resources available, right?
You lost the engine with the db, am I correct ?
I'm CCing someone that might have the exact answer for that.
----- Original Message -----
5:46 p.m.
The db and engine are offline. Storage is unaffected. The server had hardware failure.
Only 2 hosts remain with VMs running
----- Original Message -----
From: "Maor Lipchuk" <mlipchuk(a)redhat.com>
To: mjames(a)media-node.com
Cc: "users" <users(a)ovirt.org>, "Allon Mureinik"
<amureini(a)redhat.com>, "Yair Zaslavsky" <yzaslavs(a)redhat.com>
Sent: Wednesday, September 10, 2014 10:26:35 AM
Subject: Re: [ovirt-users] Engine Hardware Crash
If those vms are still running on your Hosts,
you can use the engine to add those hosts to the engine,
and IINM those running VMs should appear on the engine as external VMs
Regards,
Maor
----- Original Message -----
5:45 p.m.
Yes the db and engine are offline
----- Original Message -----
From: "Yair Zaslavsky" <yzaslavs(a)redhat.com>
To: "Maurice James" <mjames(a)media-node.com>
Cc: "users" <users(a)ovirt.org>, "Maor Lipchuk"
<mlipchuk(a)redhat.com>, "Allon Mureinik" <amureini(a)redhat.com>
Sent: Wednesday, September 10, 2014 9:34:41 AM
Subject: Re: [ovirt-users] Engine Hardware Crash
Just to make sure, this means that when it comes to file system , etc.. you also have your
storage resources available, right?
You lost the engine with the db, am I correct ?
I'm CCing someone that might have the exact answer for that.
----- Original Message -----
2:50 p.m.
No back up, just the hard drive. The data is fine its the server board that is fried. I
will eventually get a replacement server that I can use. So this brings me back to my
original question below:
How do I, or can I use vdsm to interact with the VMs that are still present
on those hosts without the engine?
----- Original Message -----
From: "Itamar Heim" <iheim(a)redhat.com>
To: "Maurice James" <mjames(a)media-node.com>, "Yair Zaslavsky"
<yzaslavs(a)redhat.com>
Cc: "users" <users(a)ovirt.org>
Sent: Wednesday, September 10, 2014 5:20:47 PM
Subject: Re: [ovirt-users] Engine Hardware Crash
On 09/10/2014 06:45 PM, Maurice James wrote:
Yes the db and engine are offline
do you have a backup of the db to restore the engine?
6:26 a.m.
On 09/11/2014 08:50 AM, Maurice James wrote:
Hi Maurice,
What's the oVirt environment that you were running? 3.3, 3.4, 3.5?
When you say interact, is it about to start the VM that are you asking?
Could you please clarify? Have you tried the Maor's suggestion?
For now, I would say to start with:
http://wiki.ovirt.org/VdsClient
Thanks
Douglas
--
Cheers
Douglas
9:18 p.m.
I am running 3.4.2 in that environment. I was wondering if there is a way to start, stop,
reboot the VMs that are present on the hosts that are still running? I did not see any
emails from Maor. Thanks
----- Original Message -----
From: "Douglas Schilling Landgraf" <dougsland(a)redhat.com>
To: "Maurice James" <mjames(a)media-node.com>, "Itamar Heim"
<iheim(a)redhat.com>
Cc: "users" <users(a)ovirt.org>
Sent: Friday, September 12, 2014 12:26:11 AM
Subject: Re: [ovirt-users] Engine Hardware Crash
On 09/11/2014 08:50 AM, Maurice James wrote:
Hi Maurice,
What's the oVirt environment that you were running? 3.3, 3.4, 3.5?
When you say interact, is it about to start the VM that are you asking?
Could you please clarify? Have you tried the Maor's suggestion?
For now, I would say to start with:
http://wiki.ovirt.org/VdsClient
Thanks
Douglas
--
Cheers
Douglas
10:28 a.m.
Hi Maurice,
In the mail I sent, I proposed to add those Hosts to a new engine.
Those VMs should be registered as external VMs in your engine, and then you can manage
them and start, stop or reboot them.
before doing that, please also set InstallVds parameter in the Data Base at vdc_options
table to false, to prevent the Host to be re-deployed when it is being registered to the
new engine (see [1]).
p.s. After stabilizing your environment,
you might be interested to upgrade to 3.5.
In oVirt 3.5, there is a new DR feature which should help recovering the engine from those
scenarios which you just encountered (see [2]).
[1] update vdc_options set option_value = false where option_name = 'InstallVds'
[2] http://www.ovirt.org/Features/ImportStorageDomain#Disaster_Recovery_flows
Regards,
Maor
----- Original Message -----
12:12 p.m.
----- Original Message -----
In the original mail I explained it could help
interacting with those VMs though I raised my doubts about it,
Using external VMs will still provide the engine th ability to interact with those running
VMs, though you will only be able to see and stop them.
I guess, if you don't want to use the engine, a better alternative is to use the
vdsClient as Douglas proposed.
3:45 p.m.
Thanks all for the responses
----- Original Message -----
From: "Maor Lipchuk" <mlipchuk(a)redhat.com>
To: mjames(a)media-node.com
Cc: iheim(a)redhat.com, "users" <users(a)ovirt.org>
Sent: Monday, September 15, 2014 6:12:38 AM
Subject: Re: [ovirt-users] Engine Hardware Crash
----- Original Message -----
In the original mail I explained it could help
interacting with those VMs though I raised my doubts about it,
Using external VMs will still provide the engine th ability to interact with those running
VMs, though you will only be able to see and stop them.
I guess, if you don't want to use the engine, a better alternative is to use the
vdsClient as Douglas proposed.
9:20 p.m.
That vdsclient reference is exactly what I was looking for. I will have to use that until
I can figure out what Im going to do about getting the hard drive with the engine data
into a new server. Thanks
----- Original Message -----
From: "Douglas Schilling Landgraf" <dougsland(a)redhat.com>
To: "Maurice James" <mjames(a)media-node.com>, "Itamar Heim"
<iheim(a)redhat.com>
Cc: "users" <users(a)ovirt.org>
Sent: Friday, September 12, 2014 12:26:11 AM
Subject: Re: [ovirt-users] Engine Hardware Crash
On 09/11/2014 08:50 AM, Maurice James wrote:
Hi Maurice,
What's the oVirt environment that you were running? 3.3, 3.4, 3.5?
When you say interact, is it about to start the VM that are you asking?
Could you please clarify? Have you tried the Maor's suggestion?
For now, I would say to start with:
http://wiki.ovirt.org/VdsClient
Thanks
Douglas
--
Cheers
Douglas
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14 comments
5 participants
participants (5)
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Douglas Schilling Landgraf -
Itamar Heim -
Maor Lipchuk -
Maurice James -
Yair Zaslavsky