10:48 a.m.
Hallo,
I needed a quick confirmation on this subject.
Our environment is Ovirt 3.511 (yes, I’ll upgrade soon, I know) running on
a Centos 6.6 hosted engine VM on a cluster of Centos 6.6 physical servers.
Since Ovirt 3.6x will be compatible with Centos 7 hypervisor only, how I’m
supposed to upgrade hosted engine, VM and HOSTs?
i.e. readme tells us the well known procedure (put hosted eng in
maintenance, upgrade, etc) but I will eventually end in a scenario where my
hosted engine 3.6 will run on centos 7 VM running (on) a lot of centos 6.6
servers...
Please tell me I have not to create a totally different datacenter and
export -> import all VMs...
Thank you!
Andrea Ghelardi
6:32 a.m.
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On 8 Oct 2015, at 17:48, Andrea Ghelardi wrote:
Hallo,
I needed a quick confirmation on this subject.
=20
Our environment is Ovirt 3.511 (yes, I=92ll upgrade soon, I know) =
running on a
Centos 6.6 hosted engine VM on a cluster of Centos 6.6 =
physical servers.
=20
Since Ovirt 3.6x will be compatible with Centos 7 hypervisor only, how =
I=92m
supposed to upgrade hosted engine, VM and HOSTs?
=20
i.e. readme tells us the well known procedure (put hosted eng in =
maintenance,
upgrade, etc) but I will eventually end in a scenario where =
my hosted engine 3.6 will run on centos 7 VM running (on) a lot of =
centos 6.6 servers...
=20
Please tell me I have not to create a totally different datacenter and =
export
-> import all VMs=85
nono, the upgrade is live and all your VMs can keep humming. But there =
are manual steps involved:
Simone can probably update about Hosted Engine which would be somewhat =
special, but at least for regular VMs you can currently use:
1) create a new cluster with same settings as your existing cluster
2) remove one host from the old cluster (the one to be =
upgraded/reinstalled to EL7). While moving the host to maintenance your =
VMs will be migrated to other EL6 hosts in that cluster (make sure you =
have enough capacity to do that beforehand, of course:)
3) upgrade/reinstall the host with EL7. If youdon't have anything custom =
on the host reinstallation might be the best option
4) add it to the new cluster, installing/deploying it via UI, then it =
should come up - this is your EL7-based cluster now
5) manually migrate (Migrate To button) some of your VMs from the old =
cluster to the new one (there's an advanced section in the dialog, =
allowing you cross-cluster migrations
6) repeat until all your hosts and VMs are on EL7-based cluster, then =
you can decommission it, and perhaps rename the cluster back to its =
original name
Thanks,
michal
=20
Thank you!
Andrea Ghelardi
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_69A9F29B-AAEA-43AC-8514-18B293A07544
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Content-Type: text/html;
charset=windows-1252
<html><head><base href=3D"x-msg://7846/"></head><body
style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><br><div><div>On 8 Oct 2015, at 17:48,
Andrea =
Ghelardi wrote:</div><br
class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><span class=3D"Apple-style-span"
style=3D"border-collapse: =
separate; font-family: Helvetica; font-style: normal; font-variant: =
normal; font-weight: normal; letter-spacing: normal; line-height: =
normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; =
text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div =
lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"><div
=
class=3D"WordSection1" style=3D"page: WordSection1; "><div =
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; ">Hallo,</div><div style=3D"margin-top: 0in;
margin-right: =
0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; =
font-family: Calibri, sans-serif; ">I needed a quick confirmation on =
this subject.</div><p class=3D"MsoNormal" style=3D"margin-top:
0in; =
margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: =
11pt; font-family: Calibri, sans-serif; "> </p><div =
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; ">Our environment is Ovirt 3.511 (yes, I=92ll upgrade soon, =
I know) running on a Centos 6.6 hosted engine VM on a cluster of Centos =
6.6 physical servers.</div><p class=3D"MsoNormal"
style=3D"margin-top: =
0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; =
font-size: 11pt; font-family: Calibri, sans-serif; "> </p><div
=
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; ">Since Ovirt 3.6x will be compatible with Centos 7 =
hypervisor only, how I=92m supposed to upgrade hosted engine, VM and =
HOSTs?</div><p class=3D"MsoNormal" style=3D"margin-top: 0in; =
margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: =
11pt; font-family: Calibri, sans-serif; "> </p><div =
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; ">i.e. readme tells us the well known procedure (put hosted =
eng in maintenance, upgrade, etc) but I will eventually end in a =
scenario where my hosted engine 3.6 will run on centos 7 VM running (on) =
a lot of centos 6.6 servers...</div><p class=3D"MsoNormal" =
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; "> </p><div style=3D"margin-top: 0in;
margin-right: =
0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; =
font-family: Calibri, sans-serif; ">Please tell me I have not to create =
a totally different datacenter and export -> import all =
VMs=85</div></div></div></span></blockquote><div><br></div>nono,
the =
upgrade is live and all your VMs can keep humming. But there are manual =
steps involved:<br><div><br></div>Simone can probably update about
=
Hosted Engine which would be somewhat special, but at least for regular =
VMs you can currently use:</div><div>1) create a new cluster with same =
settings as your existing cluster</div><div>2) remove one host from the =
old cluster (the one to be upgraded/reinstalled to EL7). While moving =
the host to maintenance your VMs will be migrated to other EL6 hosts in =
that cluster (make sure you have enough capacity to do that beforehand, =
of course:)</div><div>3) upgrade/reinstall the host with EL7. If =
youdon't have anything custom on the host reinstallation might be the =
best option</div><div>4) add it to the new cluster, installing/deploying =
it via UI, then it should come up - this is your EL7-based cluster =
now</div><div>5) manually migrate (Migrate To button) some of your VMs =
from the old cluster to the new one (there's an advanced section in the =
dialog, allowing you cross-cluster migrations</div><div>6) repeat until =
all your hosts and VMs are on EL7-based cluster, then you can =
decommission it, and perhaps rename the cluster back to its original =
name</div><div><br></div><div>Thanks,</div><div>michal</div><div><br><bloc=
kquote type=3D"cite"><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; font-family: Helvetica; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: -webkit-auto; =
text-indent: 0px; text-transform: none; white-space: normal; widows: 2; =
word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div =
lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"><div
=
class=3D"WordSection1" style=3D"page: WordSection1; "><p =
class=3D"MsoNormal" style=3D"margin-top: 0in; margin-right: 0in; =
margin-left: 0in; margin-bottom: 0.0001pt; font-size: 11pt; font-family: =
Calibri, sans-serif; "> </p><div style=3D"margin-top: 0in;
=
margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: =
11pt; font-family: Calibri, sans-serif; ">Thank you!</div><div =
style=3D"margin-top: 0in; margin-right: 0in; margin-left: 0in; =
margin-bottom: 0.0001pt; font-size: 11pt; font-family: Calibri, =
sans-serif; ">Andrea =
Ghelardi</div></div>_______________________________________________<br>Use=
rs mailing list<br><a href=3D"mailto:Users@ovirt.org"
style=3D"color: =
rgb(5, 99, 193); text-decoration: underline;
">Users(a)ovirt.org</a><br><a =
href=3D"http://lists.ovirt.org/mailman/listinfo/users" style=3D"color: =
rgb(5, 99, 193); text-decoration: underline; =
">http://lists.ovirt.org/mailman/listinfo/users</a><br></div></span></bloc=
kquote></div><br></body></html>=
--Apple-Mail=_69A9F29B-AAEA-43AC-8514-18B293A07544--
9:54 a.m.
Thanks Michal,
Your reply somehow answer to my question, but I still have some bits of
fuzziness
Hosted engine VM upgrade itself is almost clear (maintenance, db backup,
reformat, reinstall, db import).
However:
1. Inter-cluster migration is somehow unsupported. Should we worried
about moving VM from EL6 cluster to EL7? You know... different vdsm etc....
is ovirt migration feature atomic and reversible (if something goes wrong
during the process)?
2. More important: the only Ovirt version that supports both EL6.6
and EL7.1 is 3.53. my real question is: what happen as soon as I finish
upgrade of my ovirt to version 3.54 (or 3.55) *while running HOSTS on EL6.6*
?
I mean, there will be a point in time when a version mismatch/overlap will
be unavoidable.
For example: how people should correctly jump from version 3.53 (EL6.6) to
3.54 (EL6.7)?
Ovirt team should support at least one or two previous version to support
overlaps...
Thanks
AG
*From:* Michal Skrivanek [mailto:michal.skrivanek@redhat.com]
*Sent:* Friday, October 09, 2015 1:33 PM
*To:* Andrea Ghelardi
*Cc:* users (users(a)ovirt.org); Simone Tiraboschi
*Subject:* Re: [ovirt-users] upgrade path from Ovirt 3.5x to 3.6x
nono, the upgrade is live and all your VMs can keep humming. But there are
manual steps involved:
Simone can probably update about Hosted Engine which would be somewhat
special, but at least for regular VMs you can currently use:
1) create a new cluster with same settings as your existing cluster
2) remove one host from the old cluster (the one to be upgraded/reinstalled
to EL7). While moving the host to maintenance your VMs will be migrated to
other EL6 hosts in that cluster (make sure you have enough capacity to do
that beforehand, of course:)
3) upgrade/reinstall the host with EL7. If youdon't have anything custom on
the host reinstallation might be the best option
4) add it to the new cluster, installing/deploying it via UI, then it
should come up - this is your EL7-based cluster now
5) manually migrate (Migrate To button) some of your VMs from the old
cluster to the new one (there's an advanced section in the dialog, allowing
you cross-cluster migrations
6) repeat until all your hosts and VMs are on EL7-based cluster, then you
can decommission it, and perhaps rename the cluster back to its original
name
Thanks,
michal
3406
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