11:10 p.m.
Hi all
After screwing my infra with the update to 4.2 (probably a bad
manipulation), i am planning a rebuild of the entire infra. First i want to
replace my NFS storage with a glusterfs storage. All documentation tell me
that i need 3 hosts.. but for the moment i only have 2 but planning to had
more later.
So does it make sense to start with 2 hosts and use glusterfs as the
storage domain(lets says with a replicate of two with all its limitations).
If it make sense,
1- what is the best way to do it.
2- how hard will it be to had the 3rd host when available and make it
replica 2+arbiter.
Also in a setup where i have 3 hosts (replica 2+arbiter) does all the 3
hosts can run users vm?
Thanks for your inputs.
Carl
11:15 p.m.
If I’m not wrong GlusterFS in oVirt requires 3 hosts.
Here’s the RHHI guide, it’s pretty much the same for oVirt:
https://access.redhat.com/documentation/en-us/red_hat_hyperconverged_infr...
On 8 Jan 2018, at 18:10, carl langlois <crl.langlois(a)gmail.com>
wrote:
Hi all
After screwing my infra with the update to 4.2 (probably a bad manipulation), i am
planning a rebuild of the entire infra. First i want to replace my NFS storage with a
glusterfs storage. All documentation tell me that i need 3 hosts.. but for the moment i
only have 2 but planning to had more later.
So does it make sense to start with 2 hosts and use glusterfs as the storage domain(lets
says with a replicate of two with all its limitations).
If it make sense,
1- what is the best way to do it.
2- how hard will it be to had the 3rd host when available and make it replica
2+arbiter.
Also in a setup where i have 3 hosts (replica 2+arbiter) does all the 3 hosts can run
users vm?
Thanks for your inputs.
Carl
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
11:32 p.m.
I should have say replica 3+arbiter when adding the 3rd host.
Yes i know that the documentation specified 3 hosts. But if i understand
this is to make sure the system is always reliable and that make sense. But
my questions is mainly is it possible to start with 2 nodes and had a 3rd
one later..when i had the budget. If i am not mistaking Gluster can work
with 2 nodes.
On Mon, Jan 8, 2018 at 3:15 PM, Vinícius Ferrão <ferrao(a)if.ufrj.br> wrote:
If I’m not wrong GlusterFS in oVirt requires 3 hosts.
Here’s the RHHI guide, it’s pretty much the same for oVirt:
https://access.redhat.com/documentation/en-us/red_hat_
hyperconverged_infrastructure/1.1/html/deploying_red_hat_
hyperconverged_infrastructure/
> On 8 Jan 2018, at 18:10, carl langlois <crl.langlois(a)gmail.com> wrote:
>
> Hi all
>
> After screwing my infra with the update to 4.2 (probably a bad
manipulation), i am planning a rebuild of the entire infra. First i want to
replace my NFS storage with a glusterfs storage. All documentation tell me
that i need 3 hosts.. but for the moment i only have 2 but planning to had
more later.
>
> So does it make sense to start with 2 hosts and use glusterfs as the
storage domain(lets says with a replicate of two with all its limitations).
> If it make sense,
> 1- what is the best way to do it.
> 2- how hard will it be to had the 3rd host when available and make it
replica 2+arbiter.
>
> Also in a setup where i have 3 hosts (replica 2+arbiter) does all the 3
hosts can run users vm?
>
> Thanks for your inputs.
>
> Carl
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
11:38 p.m.
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You can't start the hosted engine storage bin anything less than replica =
3=20
without changing the installer scripts manually.
For the third it can be pretty much anything capable of running as an arb=
iter.
/Johan
On January 8, 2018 21:33:25 carl langlois <crl.langlois(a)gmail.com> wrote:
I should have say replica 3+arbiter when adding the 3rd host.
Yes i know that the documentation specified 3 hosts. But if i understan=
d
this is to make sure the system is always reliable and that make
sense.=
But
my questions is mainly is it possible to start with 2 nodes and had a
3=
rd
one later..when i had the budget. If i am not mistaking Gluster can
wor=
k
with 2 nodes.
On Mon, Jan 8, 2018 at 3:15 PM, Vin=C3=ADcius Ferr=C3=A3o <ferrao(a)if.uf=
rj.br> wrote:
> If I=E2=80=99m not wrong GlusterFS in oVirt requires 3 hosts.
>
> Here=E2=80=99s the RHHI guide, it=E2=80=99s pretty much the same for o=
Virt:
> https://access.redhat.com/documentation/en-us/red_hat_
> hyperconverged_infrastructure/1.1/html/deploying_red_hat_
> hyperconverged_infrastructure/
>
> > On 8 Jan 2018, at 18:10, carl langlois <crl.langlois(a)gmail.com> wrot=
e:
> >
> > Hi all
> >
> > After screwing my infra with the update to 4.2 (probably a bad
> manipulation), i am planning a rebuild of the entire infra. First i wa=
nt to
> replace my NFS storage with a glusterfs storage. All
documentation tel=
l me
> that i need 3 hosts.. but for the moment i only have 2 but
planning to=
had
> more later.
> >
> > So does it make sense to start with 2 hosts and use glusterfs as the
> storage domain(lets says with a replicate of two with all its limitati=
ons).
> > If it make sense,
> > 1- what is the best way to do it.
> > 2- how hard will it be to had the 3rd host when available and make i=
t
> replica 2+arbiter.
> >
> > Also in a setup where i have 3 hosts (replica 2+arbiter) does all th=
e 3
> hosts can run users vm?
> >
> > Thanks for your inputs.
> >
> > Carl
> >
> > _______________________________________________
> > Users mailing list
> > Users(a)ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
>
>
----------
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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<head>
</head>
<body>
<div style=3D"color: black;">
<div style=3D"color: black;">
<p style=3D"margin: 0 0 1em 0; color: black;">You can't start the
hosted en=
gine storage bin anything less than replica 3 without changing the installe=
r scripts manually.</p>
<p style=3D"margin: 0 0 1em 0; color: black;">For the third it can be
prett=
y much anything capable of running as an arbiter.</p>
<p style=3D"margin: 0 0 1em 0; color: black;">/Johan</p>
</div>
<div style=3D"color: black;">
<p style=3D"color: black; font-size: 10pt; font-family: Arial, sans-serif; =
margin: 10pt 0;">On January 8, 2018 21:33:25 carl langlois <crl.langlois=
@gmail.com> wrote:</p>
<blockquote type=3D"cite" class=3D"gmail_quote"
style=3D"margin: 0 0 0 0.75=
ex; border-left: 1px solid #808080; padding-left: 0.75ex;">
<div dir=3D"ltr"><div>I should have say replica 3+arbiter when
adding the 3=
rd host.</div><div><br></div>Yes i know that the documentation
specified 3 =
hosts. But if i understand this is to make sure the system is always reliab=
le and that make sense. But my questions is mainly is it possible to start =
with 2 nodes and had a 3rd one later..when i had the budget. If i am not mi=
staking Gluster can work with 2
nodes.<div><div><br></div><div><br></div></=
div></div><div class=3D"gmail_extra"><br><div
class=3D"gmail_quote">On Mon,=
Jan 8, 2018 at 3:15 PM, Vin=C3=ADcius Ferr=C3=A3o <span
dir=3D"ltr"><<a=
href=3D"mailto:ferrao@if.ufrj.br"
target=3D"_blank">ferrao(a)if.ufrj.br</a>&=
gt;</span> wrote:<br><blockquote class=3D"gmail_quote"
style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex">If I=E2=80=99m not wron=
g GlusterFS in oVirt requires 3 hosts.<br>
<br>
Here=E2=80=99s the RHHI guide, it=E2=80=99s pretty much the same for oVirt:=
<a href=3D"https://access.redhat.com/documentation/en-us/red_hat_hyperc...
erged_infrastructure/1.1/html/deploying_red_hat_hyperconverged_infrastructu=
re/" rel=3D"noreferrer"
target=3D"_blank">https://access.redhat.com/<wbr>do=
cumentation/en-us/red_hat_<wbr>hyperconverged_infrastructure/<wbr>1.1/html/=
deploying_red_hat_<wbr>hyperconverged_infrastructure/</a><br>
<div><div class=3D"h5"><br>
> On 8 Jan 2018, at 18:10, carl langlois <<a
href=3D"mailto:crl.langl=
ois@gmail.com">crl.langlois(a)gmail.com</a>&gt; wrote:<br>
><br>
> Hi all<br>
><br>
> After screwing my infra with the update to 4.2 (probably a bad manipul=
ation), i am planning a rebuild of the entire infra. First i want to replac=
e my NFS storage with a glusterfs storage. All documentation tell me that i=
need 3 hosts.. but for the moment i only have 2 but planning to had more l=
ater.<br>
><br>
> So does it make sense to start with 2 hosts and use glusterfs as the s=
torage domain(lets says with a replicate of two with all its limitations).<=
br>
> If it make sense,<br>
> 1- what is the best way to do it.<br>
> 2- how hard will it be to had the 3rd host when available and make it=
=C2=A0 replica 2+arbiter.<br>
><br>
> Also in a setup where i have 3 hosts (replica 2+arbiter) does all the =
3 hosts can run users vm?<br>
><br>
> Thanks for your inputs.<br>
><br>
> Carl<br>
><br>
</div></div>>
______________________________<wbr>_________________<br>
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> <a
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br>
> <a href=3D"http://lists.ovirt.org/mailman/listinfo/users"
rel=3D"noref=
errer"
target=3D"_blank">http://lists.ovirt.org/<wbr>mailman/...
</a><br>
<br>
</blockquote></div><br></div>
_______________________________________________<br>
Users mailing list<br>
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href=3D"mailto:Users%40ovirt.org">Us=
ers(a)ovirt.org</a><br>
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href=3D"http://lists.ovirt.org/mailm=
an/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users&...
<br>
</blockquote>
</div>
</div>
</body>
</html>
------------160d77f42c13f912780526b09d--
1:05 a.m.
On 1/8/2018 12:38 PM, Johan Bernhardsson wrote:
You can't start the hosted engine storage bin anything less than
replica 3 without changing the installer scripts manually.
For the third it can be pretty much anything capable of running as an
arbiter.
+1 the arb box can be an old SFP core2duo with a 40-60 GB SSD for most
cases. The formula is something like 4k of arbiter space for every
"file". For 10-80 VM disk images that would be really minimal.
-wk
2325
days inactive
2325
days old
4 comments
4 participants
participants (4)
-
carl langlois -
Johan Bernhardsson -
Vinícius Ferrão -
WK