9:03 a.m.
Hello,
is it correct that even if I use cloud-init I have to seal my candidate VM
before making it a template?
In that case what is the correct approach to pre-seal a CentOS 7 VM?
Also, for operating system like Fedora >=20 and/or RHEL/CentOS 7 should I
unconfigure NetworkManager before sealing them, using classic network
service, or what?
Thanks in advance,
Gianluca
9:42 a.m.
On 01.12.15 09:03, Gianluca Cecchi wrote:
Hello,
is it correct that even if I use cloud-init I have to seal my candidate VM
before making it a template?
Well it depend,
If you have a common initialization you can run cloud-init before sealing the
template, its more reasonable to create a template and run cloud-init on each
VM that created from this template.
In that case what is the correct approach to pre-seal a CentOS 7 VM?
Also, for operating system like Fedora >=20 and/or RHEL/CentOS 7 should I
unconfigure NetworkManager before sealing them, using classic network
service, or what?
Yes the NetworkManager can override cloud-init network settings.
Thanks in advance,
Gianluca
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
5:26 p.m.
On Tue, Dec 1, 2015 at 9:42 AM, Shahar Havivi <shaharh(a)redhat.com> wrote:
On 01.12.15 09:03, Gianluca Cecchi wrote:
> Hello,
> is it correct that even if I use cloud-init I have to seal my candidate
VM
> before making it a template?
Well it depend,
If you have a common initialization you can run cloud-init before sealing
the
template, its more reasonable to create a template and run cloud-init on
each
VM that created from this template.
> In that case what is the correct approach to pre-seal a CentOS 7 VM?
> Also, for operating system like Fedora >=20 and/or RHEL/CentOS 7 should I
> unconfigure NetworkManager before sealing them, using classic network
> service, or what?
Yes the NetworkManager can override cloud-init network settings.
>
OK, I'm trying using classic network instead of NetworkManager.
But right before running the "make template" action, do I have to run any
of "sys-unconfig" and/or "virt-sysprep" tools?
- sys-unconfig
I see in its man page:
"This utility should not be used for creating cloud or virtual machine
images. For that use please see virt-sysprep"
Does this note apply also in my scenario where I want to seal a VM in oVirt
before making a template from it?
- virt-sysprep
It should be run "out of band" against a disk of a powered off VM if I
understood correctly.
Is it applicable in my case with oVirt and a disk that actually is on a
storage domain?
It seems more applicable in a plain Qemu?KVM environment...
It remains open the question about how to properly seal a RHEL 7 / CentOS 7
VM/OS.
Thanks,
Gianluca
8:18 a.m.
On 01.12.15 17:26, Gianluca Cecchi wrote:
On Tue, Dec 1, 2015 at 9:42 AM, Shahar Havivi
<shaharh(a)redhat.com> wrote:
> On 01.12.15 09:03, Gianluca Cecchi wrote:
> > Hello,
> > is it correct that even if I use cloud-init I have to seal my candidate
> VM
> > before making it a template?
> Well it depend,
> If you have a common initialization you can run cloud-init before sealing
> the
> template, its more reasonable to create a template and run cloud-init on
> each
> VM that created from this template.
> > In that case what is the correct approach to pre-seal a CentOS 7 VM?
> > Also, for operating system like Fedora >=20 and/or RHEL/CentOS 7 should I
> > unconfigure NetworkManager before sealing them, using classic network
> > service, or what?
> Yes the NetworkManager can override cloud-init network settings.
> >
>
>
OK, I'm trying using classic network instead of NetworkManager.
But right before running the "make template" action, do I have to run any
of "sys-unconfig" and/or "virt-sysprep" tools?
No you don't
need to run this tools.
- sys-unconfig
I see in its man page:
"This utility should not be used for creating cloud or virtual machine
images. For that use please see virt-sysprep"
Does this note apply also in my scenario where I want to seal a VM in oVirt
before making a template from it?
- virt-sysprep
It should be run "out of band" against a disk of a powered off VM if I
understood correctly.
Is it applicable in my case with oVirt and a disk that actually is on a
storage domain?
It seems more applicable in a plain Qemu?KVM environment...
It remains open the question about how to properly seal a RHEL 7 / CentOS 7
What do
you mean by sealing?
VM/OS.
Thanks,
Gianluca
8:43 a.m.
On Wed, Dec 2, 2015 at 8:18 AM, Shahar Havivi <shaharh(a)redhat.com> wrote:
On 01.12.15 17:26, Gianluca Cecchi wrote:
>
> OK, I'm trying using classic network instead of NetworkManager.
> But right before running the "make template" action, do I have to run any
> of "sys-unconfig" and/or "virt-sysprep" tools?
No you don't need to run this tools.
OK. Understood.
>
> It remains open the question about how to properly seal a RHEL 7 /
CentOS 7
What do you mean by sealing?
I mean what are the correct modifications t apply to the OS, before makeing
it a template and then create a VM from that template using cloud-init.
For example:
a NetworkManager enabled configuration for ifcfg-eth0 file is somethng like
that on RH EL 7:
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eth0
UUID=5a656c34-e4ba-44a1-8079-d2c797e6a8f4
DEVICE=eth0
ONBOOT=yes
IPADDR=10.4.4.29
PREFIX=24
GATEWAY=10.4.4.250
DNS1=10.4.1.11
DNS2=10.4.1.12
DOMAIN="mysearchdomain1.com mysearchdomain2.com"
While an old style (managed by classic "network" service) entry sholud be
something like:
DEVICE=eth0
TYPE=Ethernet
BOOTPROTO=static
ONBOOT=yes
IPADDR=10.4.4.29
PREFIX=24
GATEWAY=10.4.4.250
Do I have to make any modification in both case to ifcfg-eth0 just before
making template or should I leave the original VM values inside?
Does cloud-init provided by oVirt with the values I put inside the GUI
during VM creation replace files using something like "sed" command or does
it run any network-config operating system commands?
Gianluca
9:01 a.m.
On 02.12.15 08:43, Gianluca Cecchi wrote:
On Wed, Dec 2, 2015 at 8:18 AM, Shahar Havivi
<shaharh(a)redhat.com> wrote:
> On 01.12.15 17:26, Gianluca Cecchi wrote:
> >
> > OK, I'm trying using classic network instead of NetworkManager.
> > But right before running the "make template" action, do I have to run
any
> > of "sys-unconfig" and/or "virt-sysprep" tools?
> No you don't need to run this tools.
>
OK. Understood.
> >
> > It remains open the question about how to properly seal a RHEL 7 /
> CentOS 7
> What do you mean by sealing?
>
>
I mean what are the correct modifications t apply to the OS, before makeing
it a template and then create a VM from that template using cloud-init.
For example:
a NetworkManager enabled configuration for ifcfg-eth0 file is somethng like
that on RH EL 7:
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_FAILURE_FATAL=no
NAME=eth0
UUID=5a656c34-e4ba-44a1-8079-d2c797e6a8f4
DEVICE=eth0
ONBOOT=yes
IPADDR=10.4.4.29
PREFIX=24
GATEWAY=10.4.4.250
DNS1=10.4.1.11
DNS2=10.4.1.12
DOMAIN="mysearchdomain1.com mysearchdomain2.com"
While an old style (managed by classic "network" service) entry sholud be
something like:
DEVICE=eth0
TYPE=Ethernet
BOOTPROTO=static
ONBOOT=yes
IPADDR=10.4.4.29
PREFIX=24
GATEWAY=10.4.4.250
Do I have to make any modification in both case to ifcfg-eth0 just before
making template or should I leave the original VM values inside?
Does cloud-init provided by oVirt with the values I put inside the GUI
during VM creation replace files using something like "sed" command or does
it run any network-config operating system commands?
Gianluca
You are using a static IP which can be a problem on creating multiple
VMs.
In this case you will need to run cloud-init on each created VM with a new
static IP or DHCP.
6:35 p.m.
On Wed, Dec 2, 2015 at 9:01 AM, Shahar Havivi <shaharh(a)redhat.com> wrote:
You are using a static IP which can be a problem on creating multiple VMs.
In this case you will need to run cloud-init on each created VM with a new
static IP or DHCP.
yes, I understand your point.
But my contingent need is to temporary setup a bunch of "fat" (8Gb of ram
and 2 cores) clients that have to stress a RAC DB in several ways
(concurrent HammerDB, load balancing and failover tests, ecc...)
They have to stay on a test network not under my control and where there is
not a dhcp server and I'm not allowed to set up one.
So I have only a pool of Ip addresses on this network. I will start with
2-3 clients, but then it could be that I need to instantiate also tenths of
them.
I have not so many resources and time to setup a more engineered
provisioning system (Foreman, Puppet, ManageIQ, ecc...) at least at this
time.
Coming back to CentOS 7 template, I made some combinations and finally I
found that the best result is obtained with NetworkManager enabled on the
source template from which I create the VM with cloud-init.
It would be nice to have a sort of translation to a user-data (or
similar...) file when I compose my cloud-init settings for a new vm inside
the gui, so that I can duplicate further similar instantiations from oVirt
CLI or other scripted commands, bypassing the web gui.
I'm not so acquainted with cloud-init in general and with its
implementation in oVirt. If there is any useful link for this kind of task
or a suggestion to pass a file for VM creation is welcome.
Thanks again anyway,
Gianluca
9:56 p.m.
Hi,
You can always use REST-API to attach a cloud-init payload to the the
machines you create - see the API example in:
http://www.ovirt.org/Features/Cloud-Init_Integration
But the feature was somewhat broken in 3.5.5, recently fixed in 3.5.6:
https://bugzilla.redhat.com/show_bug.cgi?id=1269534
Please see that you should use the new <use_cloud_init>true</use_cloud_init>
tag for 3.5.6
I have no experience with it in previous versions tough...
For the template sealing, I only set hostname to localhost, remove the
infamous /etc/udev/rules.d/70-* files, delete HW lines form ifcfg-* files,
unregister the machine from satellite etc. and poweroff. I do not use
sys-unconfig (as it suggests), and did not need to run virt-sysprep - plain
old sealing with deleting the necessary info seemed enough for me...
Regards,
--
Ekin.
8:50 a.m.
--Apple-Mail=_2CEBF600-631A-47C8-98EF-F91B82FF9417
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=utf-8
On 02 Dec 2015, at 21:56, Ekin Mero=C4=9Flu =
<ekin.meroglu(a)linuxera.com> wrote:
=20
Hi,
=20
You can always use REST-API to attach a cloud-init payload to the the =
machines
you create - see the API example in:
<http://www.ovirt.org/Features/Cloud-Init_Integration>=20
=20
But the feature was somewhat broken in 3.5.5, recently fixed in 3.5.6:=20=
<https://bugzilla.redhat.com/show_bug.cgi?id=3D1269534>
=20
Please see that you should use the new =
<use_cloud_init>true</use_cloud_init> tag for 3.5.6
=20
I have no experience with it in previous versions tough...
=20
For the template sealing, I only set hostname to localhost, remove the =
infamous
/etc/udev/rules.d/70-* files, delete HW lines form ifcfg-* =
files, unregister the machine from satellite etc. and poweroff. I do not =
use sys-unconfig (as it suggests), and did not need to run virt-sysprep =
- plain old sealing with deleting the necessary info seemed enough for =
me=E2=80=A6
well, that=E2=80=99s what virt-sysprep does, there are quite a few =
details it can take care of to make the template really pristine
=20
Regards,
--
Ekin.
=20
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_2CEBF600-631A-47C8-98EF-F91B82FF9417
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=utf-8
<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote
type=3D"cite" class=3D""><div =
class=3D"">On 02 Dec 2015, at 21:56, Ekin Mero=C4=9Flu <<a =
href=3D"mailto:ekin.meroglu@linuxera.com" =
class=3D"">ekin.meroglu(a)linuxera.com</a>&gt;
wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div
dir=3D"ltr" =
class=3D""><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">Hi,</div><div
=
class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">You can always =
use REST-API to attach a cloud-init payload to the the machines you =
create - see the API example in:</div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><a =
href=3D"http://www.ovirt.org/Features/Cloud-Init_Integration" =
class=3D"">http://www.ovirt.org/Features/Cloud-Init_Integrat...
/div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">But the feature =
was somewhat broken in 3.5.5, recently fixed in 3.5.6: <br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><a =
href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D1269534" =
class=3D"">https://bugzilla.redhat.com/show_bug.cgi?id=3D126...
<div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default"><font
face=3D"tahoma, =
sans-serif" style=3D"font-size:small" class=3D"">Please see
that you =
should use the new </font><span style=3D"font-size: small; =
white-space: pre-wrap;" class=3D""><font face=3D"monospace,
monospace" =
class=3D""><use_cloud_init>true</use_cloud_init>
=
</font></span>tag for 3.5.6</div><div
class=3D"gmail_default"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">I have no =
experience with it in previous versions tough...</div><div =
class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">For the template =
sealing, I only set hostname to localhost, remove the infamous =
/etc/udev/rules.d/70-* files, delete HW lines form ifcfg-* files, =
unregister the machine from satellite etc. and poweroff. I do not use =
sys-unconfig (as it suggests), and did not need to run virt-sysprep - =
plain old sealing with deleting the necessary info seemed enough for =
me=E2=80=A6</div></div></div></blockquote><div><br
class=3D""></div>well, =
that=E2=80=99s what virt-sysprep does, there are quite a few details it =
can take care of to make the template really pristine</div><div><br =
class=3D""><blockquote type=3D"cite"
class=3D""><div class=3D""><div =
dir=3D"ltr" class=3D""><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div><div class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">Regards,</div><div=
class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">--</div><div
=
class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small">Ekin.</div><div
=
class=3D"gmail_default" =
style=3D"font-family:tahoma,sans-serif;font-size:small"><br =
class=3D""></div></div>
_______________________________________________<br class=3D"">Users =
mailing list<br class=3D""><a href=3D"mailto:Users@ovirt.org"
=
class=3D"">Users(a)ovirt.org</a><br =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br =
class=3D""></div></blockquote></div><br
class=3D""></body></html>=
--Apple-Mail=_2CEBF600-631A-47C8-98EF-F91B82FF9417--
8:59 a.m.
--Apple-Mail=_0E77573E-6EED-45DF-AF7A-CA9FCC70B472
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=utf-8
On 02 Dec 2015, at 08:43, Gianluca Cecchi
<gianluca.cecchi(a)gmail.com> =
wrote:
=20
On Wed, Dec 2, 2015 at 8:18 AM, Shahar Havivi <shaharh(a)redhat.com =
<mailto:shaharh@redhat.com>> wrote:
On 01.12.15 17 <tel:01.12.15%2017>:26, Gianluca Cecchi wrote:
>
> OK, I'm trying using classic network instead of NetworkManager.
> But right before running the "make template" action, do I have to =
run any
> of "sys-unconfig" and/or "virt-sysprep"
tools?
No you don't need to run this tools.
=20
OK. Understood.
you don=E2=80=99t have to, but you=E2=80=99ll get a better, cleaner, =
template if you=E2=80=99ve been using the original image before (added =
accounts, installed stuff=E2=80=A6things people usually do when =
preparing a template:)
we=E2=80=99re looking into integrating it into UI, as it is quite easy =
to omit a thing or two when sealing it manually
It may make sense to use it for initialization during deployment as well =
as a replacement of cloud-init not requiring you to initialize it by =
running it. You would have to do it yourself, making sure the image is =
not in use while the operation is ongoing.
I think it would also be nice to completely integrate it into =E2=80=9Ccre=
ate VM from Template=E2=80=9D flow. You would have a ready-to-go VMs =
customized at the time of creation already, instead of relying on =
runtime cloud-init
Thanks,
michal
=20
=20
>
> It remains open the question about how to properly seal a RHEL 7 / =
CentOS 7
What do you mean by sealing?
=20
=20
I mean what are the correct modifications t apply to the OS, before =
makeing it a
template and then create a VM from that template using =
cloud-init.
For example:
a NetworkManager enabled configuration for ifcfg-eth0 file is somethng =
like that
on RH EL 7:
=20
TYPE=3DEthernet
BOOTPROTO=3Dnone
DEFROUTE=3Dyes
IPV4_FAILURE_FATAL=3Dno
IPV6INIT=3Dno
IPV6_AUTOCONF=3Dyes
IPV6_DEFROUTE=3Dyes
IPV6_PEERDNS=3Dyes
IPV6_PEERROUTES=3Dyes
IPV6_FAILURE_FATAL=3Dno
NAME=3Deth0
UUID=3D5a656c34-e4ba-44a1-8079-d2c797e6a8f4
DEVICE=3Deth0
ONBOOT=3Dyes
IPADDR=3D10.4.4.29
PREFIX=3D24
GATEWAY=3D10.4.4.250
DNS1=3D10.4.1.11
DNS2=3D10.4.1.12
DOMAIN=3D"mysearchdomain1.com <http://mysearchdomain1.com/> =
mysearchdomain2.com <http://mysearchdomain2.com/>"
=20
While an old style (managed by classic "network" service) entry sholud =
be something like:
=20
DEVICE=3Deth0
TYPE=3DEthernet
BOOTPROTO=3Dstatic
ONBOOT=3Dyes
IPADDR=3D10.4.4.29
PREFIX=3D24
GATEWAY=3D10.4.4.250
=20
Do I have to make any modification in both case to ifcfg-eth0 just =
before making
template or should I leave the original VM values inside?
Does cloud-init provided by oVirt with the values I put inside the
GUI =
during VM creation replace files using something like "sed" command
or =
does it run any network-config operating system commands?
Gianluca
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_0E77573E-6EED-45DF-AF7A-CA9FCC70B472
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=utf-8
<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote
type=3D"cite" class=3D""><div =
class=3D"">On 02 Dec 2015, at 08:43, Gianluca Cecchi <<a =
href=3D"mailto:gianluca.cecchi@gmail.com" =
class=3D"">gianluca.cecchi(a)gmail.com</a>&gt;
wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div
dir=3D"ltr" =
class=3D""><div class=3D"gmail_extra"><div
class=3D"gmail_quote">On Wed, =
Dec 2, 2015 at 8:18 AM, Shahar Havivi <span dir=3D"ltr"
class=3D""><<a =
href=3D"mailto:shaharh@redhat.com" target=3D"_blank" =
class=3D"">shaharh(a)redhat.com</a>&gt;</span> wrote:<br =
class=3D""><blockquote class=3D"gmail_quote"
style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left=
-style:solid;padding-left:1ex"><span class=3D"">On <a =
href=3D"tel:01.12.15%2017" value=3D"+3901121517"
class=3D"">01.12.15 =
17</a>:26, Gianluca Cecchi wrote:<br class=3D"">
><br class=3D"">
> OK, I'm trying using classic network instead of NetworkManager.<br =
class=3D"">
> But right before running the "make template" action, do I have to =
run any<br class=3D"">
> of "sys-unconfig" and/or "virt-sysprep" tools?<br
class=3D"">
</span>No you don't need to run this tools.<br =
class=3D""></blockquote><div class=3D""><br
class=3D""></div><div =
class=3D""> OK. =
Understood.</div></div></div></div></div></blockquote><div><br
=
class=3D""></div>you don=E2=80=99t have to, but you=E2=80=99ll get a =
better, cleaner, template if you=E2=80=99ve been using the original =
image before (added accounts, installed stuff=E2=80=A6things people =
usually do when preparing a template:)</div><div>we=E2=80=99re looking =
into integrating it into UI, as it is quite easy to omit a thing or two =
when sealing it manually</div><div><br
class=3D""></div><div>It may make =
sense to use it for initialization during deployment as well as a =
replacement of cloud-init not requiring you to initialize it by running =
it. You would have to do it yourself, making sure the image is not in =
use while the operation is ongoing.</div><div>I think it would also be =
nice to completely integrate it into =E2=80=9Ccreate VM from Template=E2=80=
=9D flow. You would have a ready-to-go VMs customized at the time of =
creation already, instead of relying on runtime cloud-init</div><div><br =
class=3D""></div><div>Thanks,</div><div>michal</div><div><br
=
class=3D""><blockquote type=3D"cite"
class=3D""><div class=3D""><div =
dir=3D"ltr" class=3D""><div
class=3D"gmail_extra"><div =
class=3D"gmail_quote"><div class=3D""><br
class=3D""></div><div =
class=3D""> </div><blockquote
class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left=
-style:solid;padding-left:1ex"><span class=3D"">
><br class=3D"">
> It remains open the question about how to properly seal a RHEL 7 / =
CentOS 7<br class=3D"">
</span>What do you mean by sealing?<br class=3D""><br =
class=3D""></blockquote><div class=3D""><br
class=3D""></div><div =
class=3D"">I mean what are the correct modifications t apply to the OS, =
before makeing it a template and then create a VM from that template =
using cloud-init.</div><div class=3D"">For
example:</div><div class=3D"">a=
NetworkManager enabled configuration for ifcfg-eth0 file is somethng =
like that on RH EL 7:</div><div class=3D""><br
class=3D""></div><div =
class=3D"">TYPE=3DEthernet</div><div
class=3D"">BOOTPROTO=3Dnone</div><div=
class=3D"">DEFROUTE=3Dyes</div><div =
class=3D"">IPV4_FAILURE_FATAL=3Dno</div><div =
class=3D"">IPV6INIT=3Dno</div><div
class=3D"">IPV6_AUTOCONF=3Dyes</div><di=
v class=3D"">IPV6_DEFROUTE=3Dyes</div><div =
class=3D"">IPV6_PEERDNS=3Dyes</div><div =
class=3D"">IPV6_PEERROUTES=3Dyes</div><div =
class=3D"">IPV6_FAILURE_FATAL=3Dno</div><div =
class=3D"">NAME=3Deth0</div><div =
class=3D"">UUID=3D5a656c34-e4ba-44a1-8079-d2c797e6a8f4</div><div =
class=3D"">DEVICE=3Deth0</div><div
class=3D"">ONBOOT=3Dyes</div><div =
class=3D"">IPADDR=3D10.4.4.29</div><div
class=3D"">PREFIX=3D24</div><div =
class=3D"">GATEWAY=3D10.4.4.250</div><div =
class=3D"">DNS1=3D10.4.1.11</div><div
class=3D"">DNS2=3D10.4.1.12</div><di=
v class=3D"">DOMAIN=3D"<a
href=3D"http://mysearchdomain1.com/" =
class=3D"">mysearchdomain1.com</a> <a
href=3D"http://mysearchdomain2.com/"=
class=3D"">mysearchdomain2.com</a>"</div><div
class=3D""><br =
class=3D""></div><div class=3D"">While an old style
(managed by classic =
"network" service) entry sholud be something like:</div><div =
class=3D""><br class=3D""></div><div
class=3D"">DEVICE=3Deth0<br =
class=3D""></div></div><div
class=3D"">TYPE=3DEthernet</div><div =
class=3D"">BOOTPROTO=3Dstatic</div><div
class=3D"">ONBOOT=3Dyes<br =
class=3D""></div><div
class=3D"">IPADDR=3D10.4.4.29</div><div =
class=3D"">PREFIX=3D24</div><div
class=3D"">GATEWAY=3D10.4.4.250</div><div=
class=3D""><br class=3D""></div><div
class=3D"">Do I have to make any =
modification in both case to ifcfg-eth0 just before making template or =
should I leave the original VM values inside?</div><div
class=3D"">Does =
cloud-init provided by oVirt with the values I put inside the GUI during =
VM creation replace files using something like "sed" command or does it =
run any network-config operating system commands?</div><div =
class=3D"">Gianluca</div></div></div>
_______________________________________________<br class=3D"">Users =
mailing list<br class=3D""><a href=3D"mailto:Users@ovirt.org"
=
class=3D"">Users(a)ovirt.org</a><br =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br =
class=3D""></div></blockquote></div><br
class=3D""></body></html>=
--Apple-Mail=_0E77573E-6EED-45DF-AF7A-CA9FCC70B472--
9:31 a.m.
On Fri, Dec 4, 2015 at 8:59 AM, Michal Skrivanek <
michal.skrivanek(a)redhat.com> wrote:
On 02 Dec 2015, at 08:43, Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
wrote:
On Wed, Dec 2, 2015 at 8:18 AM, Shahar Havivi <shaharh(a)redhat.com> wrote:
> On 01.12.15 17:26, Gianluca Cecchi wrote:
> >
> > OK, I'm trying using classic network instead of NetworkManager.
> > But right before running the "make template" action, do I have to run
> any
> > of "sys-unconfig" and/or "virt-sysprep" tools?
> No you don't need to run this tools.
>
OK. Understood.
you don’t have to, but you’ll get a better, cleaner, template if you’ve
been using the original image before (added accounts, installed
stuff…things people usually do when preparing a template:)
we’re looking into integrating it into UI, as it is quite easy to omit a
thing or two when sealing it manually
It may make sense to use it for initialization during deployment as well
as a replacement of cloud-init not requiring you to initialize it by
running it. You would have to do it yourself, making sure the image is not
in use while the operation is ongoing.
I think it would also be nice to completely integrate it into “create VM
from Template” flow. You would have a ready-to-go VMs customized at the
time of creation already, instead of relying on runtime cloud-init
Thanks,
michal
Any improvement inside the gui is welcome.
Yes, in my template I already created personal users that are then able to
authenticate themself with public key in the deployed VM without any
problem and I have also Oracle client installed with a specific HammerDB
configuration file.
So the path is the one you suggested.
Thanks,
Gianluca
3069
days inactive
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10 comments
4 participants
participants (4)
-
Ekin Meroğlu -
Gianluca Cecchi -
Michal Skrivanek -
Shahar Havivi