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6:01 a.m.
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Hi,=0A Yes, clear informations about this are not available and I had=
to try a little bit before getting a result. The thing is you can cre=
ate an internal network but it has to be linked to some device, otherwis=
e the network will be considered as "non functional" and your domain, se=
rver or datacenter (depending at which level you decide to set ip), will=
return errors. At the datacenter level, I wasn't even able to have a us=
able infrastructure before correcting this. The solution is very close=
to your idea, so what about connecting these VMs to a "ghost" network i=
nterface, which is just existing virtually and behaving like a real one=
but without bothering you ? This thing is called the "dummy" module,=
and can be configured at OS level. * Configure and use the "dummy" mo=
dule and create an active interface - /etc/modprobe.d/dummy.conf=0A in=
stall dummy /sbin/modprobe --ignore-install dummy; ip link add dummy_1 t=
ype dummy=0A - /etc/modules-load.d/dummy.conf =0A # Dummy net driver for=
internal network=0A dummy * Configure this device "dummy_1" as linked=
to a dedicated bridge "smb_testing". - /etc/sysconfig/network-scripts/i=
fcfg-dummy_1 =0A # Generated by VDSM version 4.20.23-1.el7.centos=0A DEV=
ICE=3Ddummy_1=0A BRIDGE=3Dsmb_testing=0A ONBOOT=3Dyes=0A MTU=3D1500=0A D=
EFROUTE=3Dno=0A NM_CONTROLLED=3Dno=0A IPV6INIT=3Dno=0A * Classic bridg=
e definition.=0A - /etc/sysconfig/network-scripts/ifcfg-smb_testing =0A=
# Generated by VDSM version 4.20.23-1.el7.centos=0A DEVICE=3Dsmb_testin=
g=0A TYPE=3DBridge=0A DELAY=3D0=0A STP=3Doff=0A ONBOOT=3Dyes=0A MTU=3D15=
00=0A DEFROUTE=3Dno=0A NM_CONTROLLED=3Dno=0A IPV6INIT=3Dyes=0A IPV6_AUTO=
CONF=3Dyes You can now attach this network to your machines, and they=
will be able to communicate through it. =0A=0AMy main concern now is :=
will this configuration survive if I modify things and network scripts=
are regenerated by the engine ? =0A=0ARegards=0A=0A Le 09-Apr-2018 08:3=
7:23 +0200, a_shilov(a)inbox.ru a crit: =0A=0AHi List! =0A=0ARecently I'=
ve started using ovirt 4.2 and faced that I cannot find any guide how to=
do it in ovirt.org documentation. =0A=0ANeed help with configure isolat=
ed/host-only (not connect to real NIC) network that allowed to communica=
te two or more VMs into private network. May be exist a solution? I did=
it such: linked logical networt to real NIC without connect anywhere (l=
ink - DOWN), but this solution is a little bit odd. How to exclude read=
NIC? =0A=0A---------------------------------------------------------=
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<div><span style=3D"font-family: arial, helvetica,sans-serif; font-size:=
10pt; color: #000000;">Hi,<br
/></span></div>=0A<div> </div>=0A<di=
v><span style=3D"font-family: arial, helvetica,sans-serif; font-size: 10=
pt; color: #000000;">Yes, clear informations about this are not availabl=
e and I had to try a little bit before getting a result.</span></div>=0A=
<div> </div>=0A<div><span style=3D"font-family: arial,
helvetica,sa=
ns-serif; font-size: 10pt; color: #000000;">The thing is you can create=
an internal network but it has to be linked to some device, otherwise t=
he network will be considered as "non functional" and your domain, serve=
r or datacenter (depending at which level you decide to set ip), will re=
turn errors. At the datacenter level, I wasn't even able to have a usabl=
e infrastructure before correcting
this.</span></div>=0A<div> </div=
=0A<div><span style=3D"font-family: arial,
helvetica,sans-serif; font-s=
ize: 10pt; color: #000000;">The solution is
very close to your idea, so=
what about connecting these VMs to a "ghost" network interface, which i=
s just existing virtually and behaving like a real one but without bothe=
ring you
?</span></div>=0A<div> </div>=0A<div><span
style=3D"font-f=
amily: arial, helvetica,sans-serif; font-size: 10pt; color: #000000;"> T=
his thing is called the "dummy" module, and can be configured at OS leve=
l.</span></div>=0A<div> </div>=0A<div><span
style=3D"font-family: a=
rial, helvetica,sans-serif; font-size: 10pt; color: #000000;">* Configur=
e and use the "dummy" module and create an active interface
</span></div=
=0A<div><span style=3D"font-family: arial,
helvetica,sans-serif; font-s=
ize: 10pt; color:
#000000;">
-=
/etc/modprobe.d/dummy.conf<br
/> &nb=
sp; install dummy /sbin/modprobe --ignore-instal=
l dummy; ip link add dummy_1 type dummy<br
/> &nb=
sp; - /etc/modules-load.d/dummy.conf <br
/>  =
; # Dummy
net driver for=
internal network<br
/> &=
nbsp;
dummy</span></div>=0A<div> </div>=0A<div><span
st=
yle=3D"font-family: arial, helvetica,sans-serif; font-size: 10pt; color:=
#000000;">* Configure this device "dummy_1" as linked to a dedicated
br=
idge "smb_testing".</span></div>=0A<div><span
style=3D"font-family: aria=
l, helvetica,sans-serif; font-size: 10pt; color: #000000;">- /etc/syscon=
fig/network-scripts/ifcfg-dummy_1 <br
/> &n=
bsp; # Generated by VDSM version
4.20.23-1=
.el7.centos<br
/> &=
nbsp; DEVICE=3Ddummy_1<br
/> &n=
bsp; BRIDGE=3Dsmb_testing<br
/>  =
;
ONBOOT=3Dyes<br />&nbs=
p;
MTU=3D150=
0<br
/>  =
; DEFROUTE=3Dno<br
/> &nb=
sp; NM_CONTROLLED=3Dno<br
/> &n=
bsp; IPV6INIT=3Dno<br
/></span></div>=0A<d=
iv> </div>=0A<div><span style=3D"font-family: arial,
helvetica,sans=
-serif; font-size: 10pt; color: #000000;">* Classic bridge definition.<b=
r /> -
/etc/sysconfig/network-=
scripts/ifcfg-smb_testing <br
/> &nbs=
p; # Generated by VDSM version
4.20.23-1.e=
l7.centos<br
/> &nb=
sp; DEVICE=3Dsmb_testing<br
/> =
TYPE=3DBridge<br
/> &nbs=
p; DELAY=3D0<br
/> =
STP=3Doff<br />&n=
bsp;
ONBOOT=
=3Dyes<br
/> =
MTU=3D1500<br
/> &=
nbsp; DEFROUTE=3Dno<br
/>  =
; NM_CONTROLLED=3Dno<br
/> &nbs=
p;
IPV6INIT=3Dyes<br />&=
nbsp;
IPV6_A=
UTOCONF=3Dyes</span></div>=0A<div> </div>=0A<div><span
style=3D"fon=
t-family: arial, helvetica,sans-serif; font-size: 10pt; color: #000000;"=
You can now attach this network to your machines, and they will be
able=
to communicate through it.</span></div>=0A<p>My main
concern now is : w=
ill this configuration survive if I modify things and network scripts ar=
e regenerated by the engine ?</p>=0A<p>Regards<br /><br /> Le
09-Apr-201=
8 08:37:23 +0200, a_shilov(a)inbox.ru a
écrit:</p>=0A<div> </d=
iv>=0A<blockquote style=3D"margin-left: 0; padding-left: 5px; border-lef=
t: 2px solid navy;"><br /><br />=0A<p style=3D"font-family:
Arial, Tahom=
a, Verdana, sans-serif;">Hi List!</p>=0A<p style=3D"font-family:
Arial,=
Tahoma, Verdana, sans-serif;">Recently I've started using ovirt 4.2 and=
faced that I cannot find any guide how to do it in ovirt.org documentat=
ion.</p>=0A<p style=3D"font-family: Arial, Tahoma, Verdana,
sans-serif;"=
Need help with configure isolated/host-only (not connect to real NIC)
n=
etwork that allowed to communicate two or more VMs into private network.=
May be exist a solution? I did it such: linked logical networt to real=
NIC without connect anywhere (link - DOWN), but this solution is a litt=
le bit odd. How to exclude read
NIC?</p>=0A<div> </div>=0A</blockqu=
ote>=0A <br/><hr>FreeMail powered by <a
href=3D"https=
://mail.fr" target=3D"_blank">mail.fr</a>=0A
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2230
days inactive
2232
days old
1 comments
2 participants
participants (2)
-
Anton Shilov -
spfma.tech＠e.mail.fr