6:26 p.m.
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From: ~Stack~ <i.am.stack(a)gmail.com>
To: users <users(a)ovirt.org>
Message-ID: <816729cd-1ec6-f2e6-6986-2a18e83ab650(a)gmail.com>
Subject: I broke my ovirt real good....
--xECPZYKnQRjXfho4Fx0Q1QroKLPENPCQr
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Greetings,
So I did a over-confident-admin-makes-rookie-mistake. I changed a bunch
of things all back-to-back and thus don't actually know what broke. :-D
The only two real "big" changes were:
* Upgrade from 4.2.1 to 4.2.2
* change my ovirtmgmt network
The update I followed the upgrade procedures and I thought it all went
pretty well. Because I am moving it from a testing into what I hope will
be a more heavily used environment, I changed my ovirtmgmt network from
192.168.100.0/24 to 192.168.101.0/24 via the web-gui.
That was a touch tricker than just a change as I had to poke the
management engine host to be reachable on both network for a while, then
it just seemed OK.
What's happening is:
* I can no longer migrate a vm from one host to the other.
* If I try to do a "reinstall" it dies.
* There is some serious network lag between my hosts on a 10Gb network.
* I've got all kinds of python2.4 failures in my vdsm and mom logs.
Those are least the biggies.
So while I was planning on moving this to a more active use case, right
now - it is all still my play ground. I would REALLY hate to lose the
VM's but everything else can go and be rebuilt.
Given that I've somehow really broke this system pretty good, would it
be more advisable to blow away and rebuild it ALL or can I simply delete
the hypervisor hosts and rebuild them?
Thoughts?
Thanks!
~Stack~
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4:02 a.m.
Hi Stack,
Do you use FQDN? Did you perhaps hit this one
https://www.ovirt.org/blog/2016/05/modify-ifcfg-files/ ? The discussion in this bug report
may be of assistance in that case: https://bugzilla.redhat.com/show_bug.cgi?id=1252534
If you've stored the VM disks and templates and whatnot on a network share like NFS,
you should be able to start all over and import your old (current) storage domains and
start using your templates etc.
Best wishes
// Mike
-----Original Message-----
From: users-bounces(a)ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of ~Stack~
Sent: 13. april 2018 00:26
To: users <users(a)ovirt.org>
Subject: [ovirt-users] I broke my ovirt real good....
Greetings,
So I did a over-confident-admin-makes-rookie-mistake. I changed a bunch of things all
back-to-back and thus don't actually know what broke. :-D
The only two real "big" changes were:
* Upgrade from 4.2.1 to 4.2.2
* change my ovirtmgmt network
The update I followed the upgrade procedures and I thought it all went pretty well.
Because I am moving it from a testing into what I hope will be a more heavily used
environment, I changed my ovirtmgmt network from
192.168.100.0/24 to 192.168.101.0/24 via the web-gui.
That was a touch tricker than just a change as I had to poke the management engine host to
be reachable on both network for a while, then it just seemed OK.
What's happening is:
* I can no longer migrate a vm from one host to the other.
* If I try to do a "reinstall" it dies.
* There is some serious network lag between my hosts on a 10Gb network.
* I've got all kinds of python2.4 failures in my vdsm and mom logs.
Those are least the biggies.
So while I was planning on moving this to a more active use case, right now - it is all
still my play ground. I would REALLY hate to lose the VM's but everything else can go
and be rebuilt.
Given that I've somehow really broke this system pretty good, would it be more
advisable to blow away and rebuild it ALL or can I simply delete the hypervisor hosts and
rebuild them?
Thoughts?
Thanks!
~Stack~
6:58 a.m.
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From: ~Stack~ <i.am.stack(a)gmail.com>
To: users <users(a)ovirt.org>
Message-ID: <dada8a96-a7b7-af2d-1e31-86c88baeb76d(a)gmail.com>
Subject: Re: [ovirt-users] I broke my ovirt real good....
References: <816729cd-1ec6-f2e6-6986-2a18e83ab650(a)gmail.com>
<48ea2d3977b34cbf92602811be1f01cc(a)KBNMXEXC01.Demant.com>
In-Reply-To: <48ea2d3977b34cbf92602811be1f01cc(a)KBNMXEXC01.Demant.com>
--V8AnLSxbk5dQoPXpEqjsmJ3HofOKOTeEA
Content-Type: text/plain; charset=utf-8
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On 04/13/2018 03:02 AM, Michael Mortensen (MCMR) wrote:
Hi Stack,
=20
Do you use FQDN? Did you perhaps hit this one https://www.ovirt.org/blo=
g/2016/05/modify-ifcfg-files/ ? The discussion in this bug report may be =
of assistance in that case: https://bugzilla.redhat.com/show_bug.cgi?id=3D=
1252534
That looks very interesting! I will investigate that.
If you've stored the VM disks and templates and whatnot on a
network sh=
are like NFS, you should be able to start all over and import your old
(c=
urrent) storage domains and start using your templates etc.
I am currently using NFS. I will see how this networking issue you
pointed me to works out, then maybe rebuild.
Thank you for the assistance!
~Stack~
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8:16 a.m.
On Thursday, April 12, 2018 6:26:07 PM EDT ~Stack~ wrote:
Greetings,
So I did a over-confident-admin-makes-rookie-mistake. I changed a bunch
of things all back-to-back and thus don't actually know what broke. :-D
The only two real "big" changes were:
* Upgrade from 4.2.1 to 4.2.2
* change my ovirtmgmt network
The update I followed the upgrade procedures and I thought it all went
pretty well. Because I am moving it from a testing into what I hope will
be a more heavily used environment, I changed my ovirtmgmt network from
192.168.100.0/24 to 192.168.101.0/24 via the web-gui.
That was a touch tricker than just a change as I had to poke the
management engine host to be reachable on both network for a while, then
it just seemed OK.
What's happening is:
* I can no longer migrate a vm from one host to the other.
* If I try to do a "reinstall" it dies.
* There is some serious network lag between my hosts on a 10Gb network.
* I've got all kinds of python2.4 failures in my vdsm and mom logs.
Those are least the biggies.
So while I was planning on moving this to a more active use case, right
now - it is all still my play ground. I would REALLY hate to lose the
VM's but everything else can go and be rebuilt.
Given that I've somehow really broke this system pretty good, would it
be more advisable to blow away and rebuild it ALL or can I simply delete
the hypervisor hosts and rebuild them?
Thoughts?
Thanks!
~Stack~
As long as you don't destroy the data on your data domain you can rebuild the
engine and hosts and then import the existing data domain without too many
issues. I have destroyed my engine database many times, and I am still using
the same VMs from the same data domain.
Here is what I do when I mess up my database to the point I have to make a new
one:
1. Recreate the engine and database, so that I have basically have an empty
engine with no hosts and VMs.
1.1 (Optional) make a new DC that is not default. and add a cluster.
2. Add my hosts (I only have 2 so that is quick and easy).
3. Add a throw away data domain (This is needed to get the DC up so I can
import the existing data domain).
4. Import (NOT new, import) the existing data domain.
5. Do to Storage->Storage Domains->VM import and import the VMs I want.
6. Same for templates and disks if needed.
7. After you have imported the VMs/Templates/Disks you can detach and remove
the throw away data domain and the one you imported becomes the master domain.
Note if you want to move VMs between your play ground and more serious system
you can simply detach your data domain from the play ground, then attach it to
the serious engine (so you have 2 engines, one play ground and one serious)
and import which VMs you want. That way you won't run into issues with
configuring networks and stuff like you experienced.
6:48 p.m.
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Content-Type: multipart/mixed; boundary="kTkpiHIB81lTMdBrSQDkZk7ByBvTldWHY";
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From: ~Stack~ <i.am.stack(a)gmail.com>
To: users(a)ovirt.org
Message-ID: <afd965b8-7a09-9fa2-ebed-a267f5487760(a)gmail.com>
Subject: Re: [ovirt-users] I broke my ovirt real good....
References: <816729cd-1ec6-f2e6-6986-2a18e83ab650(a)gmail.com>
<2691691.Lu8XbsuI1x@awels>
In-Reply-To: <2691691.Lu8XbsuI1x@awels>
--kTkpiHIB81lTMdBrSQDkZk7ByBvTldWHY
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On 04/13/2018 07:16 AM, Alexander Wels wrote:
On Thursday, April 12, 2018 6:26:07 PM EDT ~Stack~ wrote:
> Greetings,
>
> So I did a over-confident-admin-makes-rookie-mistake. I changed a bunc=
h
> of things all back-to-back and thus don't actually know what
broke. :-=
D
>
> The only two real "big" changes were:
> * Upgrade from 4.2.1 to 4.2.2
> * change my ovirtmgmt network
>
> The update I followed the upgrade procedures and I thought it all went=
> pretty well. Because I am moving it from a testing into what I
hope wi=
ll
> be a more heavily used environment, I changed my ovirtmgmt
network fro=
m
> 192.168.100.0/24 to 192.168.101.0/24 via the web-gui.
>
> That was a touch tricker than just a change as I had to poke the
> management engine host to be reachable on both network for a while, th=
en
> it just seemed OK.
>
> What's happening is:
> * I can no longer migrate a vm from one host to the other.
> * If I try to do a "reinstall" it dies.
> * There is some serious network lag between my hosts on a 10Gb network=
=2E
> * I've got all kinds of python2.4 failures in my vdsm and mom
logs.
>
> Those are least the biggies.
>
> So while I was planning on moving this to a more active use case, righ=
t
> now - it is all still my play ground. I would REALLY hate to lose
the
> VM's but everything else can go and be rebuilt.
>
> Given that I've somehow really broke this system pretty good, would it=
> be more advisable to blow away and rebuild it ALL or can I simply
dele=
te
> the hypervisor hosts and rebuild them?
>
> Thoughts?
>
> Thanks!
> ~Stack~
=20
As long as you don't destroy the data on your data domain you can rebui=
ld
the=20
engine and hosts and then import the existing data domain without too
m=
any=20
issues. I have destroyed my engine database many times, and I am
still =
using=20
the same VMs from the same data domain.
=20
Here is what I do when I mess up my database to the point I have to mak=
e a
new=20
one:
=20
1. Recreate the engine and database, so that I have basically have an e=
mpty=20
engine with no hosts and VMs.
1.1 (Optional) make a new DC that is not default. and add a cluster.
2. Add my hosts (I only have 2 so that is quick and easy).
3. Add a throw away data domain (This is needed to get the DC up so I c=
an=20
import the existing data domain).
4. Import (NOT new, import) the existing data domain.
5. Do to Storage->Storage Domains->VM import and import the VMs I want.=
6. Same for templates and disks if needed.
7. After you have imported the VMs/Templates/Disks you can detach and r=
emove=20
the throw away data domain and the one you imported becomes the
master =
domain.
=20
Note if you want to move VMs between your play ground and more serious =
system=20
you can simply detach your data domain from the play ground, then
attac=
h it to=20
the serious engine (so you have 2 engines, one play ground and one
seri=
ous)=20
and import which VMs you want. That way you won't run into issues
with =
configuring networks and stuff like you experienced.
=20
Thanks for that help. I did that and everything looks fantastic...except
I can't migrate VM's. :-/
It just sits there and in the log files there is the below messages
repeating. It's like it doesn't care for the fact that this was an
imported domain or something.
Thoughts?
Thanks!
~Stack~
2018-04-13 16:58:59,920-0500 ERROR (monitor/232975a) [storage.Monitor]
Setting up monitor for 232975ad-1771-4b6b-afda-958f7b745867 failed
(monitor:329)
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
326, in _setupLoop
self._setupMonitor()
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
348, in _setupMonitor
self._produceDomain()
File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 158, in
wrapper
value =3D meth(self, *a, **kw)
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
366, in _produceDomain
self.domain =3D sdCache.produce(self.sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 110,
in produce
domain.getRealDomain()
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 51,
in getRealDomain
return self._cache._realProduce(self._sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 134,
in _realProduce
domain =3D self._findDomain(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 151,
in _findDomain
return findMethod(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 176,
in _findUnfetchedDomain
raise se.StorageDomainDoesNotExist(sdUUID)
StorageDomainDoesNotExist: Storage domain does not exist:
(u'232975ad-1771-4b6b-afda-958f7b745867',)
2018-04-13 16:58:59,923-0500 ERROR (monitor/bc975a4) [storage.Monitor]
Setting up monitor for bc975a4c-6c38-4248-b3f7-a26945f23693 failed
(monitor:329)
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
326, in _setupLoop
self._setupMonitor()
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
348, in _setupMonitor
self._produceDomain()
File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 158, in
wrapper
value =3D meth(self, *a, **kw)
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
366, in _produceDomain
self.domain =3D sdCache.produce(self.sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 110,
in produce
domain.getRealDomain()
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 51,
in getRealDomain
return self._cache._realProduce(self._sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 134,
in _realProduce
domain =3D self._findDomain(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 151,
in _findDomain
return findMethod(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 176,
in _findUnfetchedDomain
raise se.StorageDomainDoesNotExist(sdUUID)
StorageDomainDoesNotExist: Storage domain does not exist:
(u'bc975a4c-6c38-4248-b3f7-a26945f23693',)
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11:02 a.m.
On Friday, April 13, 2018 6:48:31 PM EDT ~Stack~ wrote:
On 04/13/2018 07:16 AM, Alexander Wels wrote:
> On Thursday, April 12, 2018 6:26:07 PM EDT ~Stack~ wrote:
>> Greetings,
>>
>> So I did a over-confident-admin-makes-rookie-mistake. I changed a bunch
>> of things all back-to-back and thus don't actually know what broke. :-D
>>
>> The only two real "big" changes were:
>> * Upgrade from 4.2.1 to 4.2.2
>> * change my ovirtmgmt network
>>
>> The update I followed the upgrade procedures and I thought it all went
>> pretty well. Because I am moving it from a testing into what I hope will
>> be a more heavily used environment, I changed my ovirtmgmt network from
>> 192.168.100.0/24 to 192.168.101.0/24 via the web-gui.
>>
>> That was a touch tricker than just a change as I had to poke the
>> management engine host to be reachable on both network for a while, then
>> it just seemed OK.
>>
>> What's happening is:
>> * I can no longer migrate a vm from one host to the other.
>> * If I try to do a "reinstall" it dies.
>> * There is some serious network lag between my hosts on a 10Gb network.
>> * I've got all kinds of python2.4 failures in my vdsm and mom logs.
>>
>> Those are least the biggies.
>>
>> So while I was planning on moving this to a more active use case, right
>> now - it is all still my play ground. I would REALLY hate to lose the
>> VM's but everything else can go and be rebuilt.
>>
>> Given that I've somehow really broke this system pretty good, would it
>> be more advisable to blow away and rebuild it ALL or can I simply delete
>> the hypervisor hosts and rebuild them?
>>
>> Thoughts?
>>
>> Thanks!
>> ~Stack~
>
> As long as you don't destroy the data on your data domain you can rebuild
> the engine and hosts and then import the existing data domain without too
> many issues. I have destroyed my engine database many times, and I am
> still using the same VMs from the same data domain.
>
> Here is what I do when I mess up my database to the point I have to make a
> new one:
>
> 1. Recreate the engine and database, so that I have basically have an
> empty
> engine with no hosts and VMs.
> 1.1 (Optional) make a new DC that is not default. and add a cluster.
> 2. Add my hosts (I only have 2 so that is quick and easy).
> 3. Add a throw away data domain (This is needed to get the DC up so I can
> import the existing data domain).
> 4. Import (NOT new, import) the existing data domain.
> 5. Do to Storage->Storage Domains->VM import and import the VMs I want.
> 6. Same for templates and disks if needed.
> 7. After you have imported the VMs/Templates/Disks you can detach and
> remove the throw away data domain and the one you imported becomes the
> master domain.
>
> Note if you want to move VMs between your play ground and more serious
> system you can simply detach your data domain from the play ground, then
> attach it to the serious engine (so you have 2 engines, one play ground
> and one serious) and import which VMs you want. That way you won't run
> into issues with configuring networks and stuff like you experienced.
Thanks for that help. I did that and everything looks fantastic...except
I can't migrate VM's. :-/
It just sits there and in the log files there is the below messages
repeating. It's like it doesn't care for the fact that this was an
imported domain or something.
Thoughts?
Thanks!
~Stack~
Don't know too much about the VDSM side of things. But obviously its looking
for a storage domain it can't find anymore. You can try restarting VDSM (won't
affect running VMs) and see if rescans the available storage domains and won't
try to access it during the migration of the VMs. Other than that I don't
know.
2018-04-13 16:58:59,920-0500 ERROR (monitor/232975a) [storage.Monitor]
Setting up monitor for 232975ad-1771-4b6b-afda-958f7b745867 failed
(monitor:329)
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
326, in _setupLoop
self._setupMonitor()
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
348, in _setupMonitor
self._produceDomain()
File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 158, in
wrapper
value = meth(self, *a, **kw)
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
366, in _produceDomain
self.domain = sdCache.produce(self.sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 110,
in produce
domain.getRealDomain()
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 51,
in getRealDomain
return self._cache._realProduce(self._sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 134,
in _realProduce
domain = self._findDomain(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 151,
in _findDomain
return findMethod(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 176,
in _findUnfetchedDomain
raise se.StorageDomainDoesNotExist(sdUUID)
StorageDomainDoesNotExist: Storage domain does not exist:
(u'232975ad-1771-4b6b-afda-958f7b745867',)
2018-04-13 16:58:59,923-0500 ERROR (monitor/bc975a4) [storage.Monitor]
Setting up monitor for bc975a4c-6c38-4248-b3f7-a26945f23693 failed
(monitor:329)
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
326, in _setupLoop
self._setupMonitor()
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
348, in _setupMonitor
self._produceDomain()
File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 158, in
wrapper
value = meth(self, *a, **kw)
File "/usr/lib/python2.7/site-packages/vdsm/storage/monitor.py", line
366, in _produceDomain
self.domain = sdCache.produce(self.sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 110,
in produce
domain.getRealDomain()
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 51,
in getRealDomain
return self._cache._realProduce(self._sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 134,
in _realProduce
domain = self._findDomain(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 151,
in _findDomain
return findMethod(sdUUID)
File "/usr/lib/python2.7/site-packages/vdsm/storage/sdc.py", line 176,
in _findUnfetchedDomain
raise se.StorageDomainDoesNotExist(sdUUID)
StorageDomainDoesNotExist: Storage domain does not exist:
(u'bc975a4c-6c38-4248-b3f7-a26945f23693',)
6:07 p.m.
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From: ~Stack~ <i.am.stack(a)gmail.com>
To: users(a)ovirt.org
Message-ID: <362d0961-23c4-dc36-e45a-726d4e065bfb(a)gmail.com>
Subject: Re: [ovirt-users] I broke my ovirt real good....
References: <816729cd-1ec6-f2e6-6986-2a18e83ab650(a)gmail.com>
<2691691.Lu8XbsuI1x@awels> <afd965b8-7a09-9fa2-ebed-a267f5487760(a)gmail.com>
<7662271.cb9bfaddkY@awels>
In-Reply-To: <7662271.cb9bfaddkY@awels>
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On 04/16/2018 10:02 AM, Alexander Wels wrote:
On Friday, April 13, 2018 6:48:31 PM EDT ~Stack~ wrote:
[sni]
> It just sits there and in the log files there is the below
messages
> repeating. It's like it doesn't care for the fact that this was an
> imported domain or something.
>
> Thoughts?
>
> Thanks!
> ~Stack~
>
=20
Don't know too much about the VDSM side of things. But obviously its lo=
oking=20
for a storage domain it can't find anymore. You can try
restarting VDSM=
(won't=20
affect running VMs) and see if rescans the available storage domains
an=
d won't=20
try to access it during the migration of the VMs. Other than that I
don=
't=20
know.
No worries. Thanks for responding. One of my hosts has gone berserk
anyway so I'm just going to do a complete fresh reinstall tomorrow.
The host says "Host has no default route" which is a load of bull.
There's nothing wrong with the default route or network connectivity.
However, oVirt puts it into non-opperational where it will sit for about
20 minutes. When it finally actually stops that process, it immediately
(milliseconds later) puts it into "activating" but then complain about
the default route and the whole process starts over again.
There's something wrong with this install so I'm just going to take the
nuke-it-from-orbit-and-start-over approach tomorrow morning.
~Stack~
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2446
days inactive
2450
days old
6 comments
3 participants
participants (3)
-
Alexander Wels -
Michael Mortensen (MCMR) -
~Stack~