Hey Guy's, If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here? I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user. From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case? Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself. -- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun.
Hi, It's not entirely clear what you want to do. Ovirt is an interface that will control hardware nodes that runs virtual servers. It's similar to vmwares vsphere. The engine need to be replicated so that if one goes down the other have the exact same information. /Johan On April 3, 2018 14:16:14 TomK <tomkcpr@mdevsys.com> wrote: Hey Guy's, If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here? I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself. -- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y. [1] https://clusterlabs.org/quickstart-redhat.html
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail-8EEA9417-92E9-48C9-891E-62232D2A400E Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com> wrote: =20 =20 =20
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com> wrote: Hey Guy's, =20 If I'm looking to setup the oVirt engine in an HA configuration off the p= hysical servers hosting my VM's (non self hosted), what are my options here?=
=20 I want to setup two to four active oVirt engine instances elsewhere and h= andle the HA via something like haproxy / keepalived to keep the entire expe= rience seamless to the user. =20 You will need to set up the oVirt engine service as well as the PG databas= e (and ovirt-engine-dwhd service and any other service we run next to the en= gine) as highly available module. In pacemaker[1], for example.=20 You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
=20 [1] https://clusterlabs.org/quickstart-redhat.html
=20 =46rom what I've seen in oVirt, that seems to be possible without the two= oVirt engines even knowing each other's existence but is it something anyon= e has ever done? Any recommendations in this case? =20 Having settings replicated would be a bonus but I would be comfortable if=
So already have one ovirt engine setup separately on a vm that manages two r= emote physical hosts. So familiar with the single host approach which I wou= ld simply replicate. At least that=E2=80=99s the idea anyway. Could you pl= ease expand a bit on the highly available module and syncing the config bet= ween hosts? Cheers, Tom they weren't and I handle that myself.
=20 --=20 Cheers, Tom K. -------------------------------------------------------------------------=
=20 Living on earth is expensive, but it includes a free trip around the sun.=
=20 _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users =20
--Apple-Mail-8EEA9417-92E9-48C9-891E-62232D2A400E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D= utf-8"></head><body dir=3D"auto"><br><br><div id=3D"AppleMailSignature">Sent= from my iPhone</div><div><br>On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <<a h= ref=3D"mailto:ykaul@redhat.com">ykaul@redhat.com</a>> wrote:<br><br></div=
<blockquote type=3D"cite"><div><div dir=3D"ltr"><br><div class=3D"gmail_ext= ra"><br><div class=3D"gmail_quote">On Tue, Apr 3, 2018 at 3:12 PM, TomK <spa= n dir=3D"ltr"><<a href=3D"mailto:tomkcpr@mdevsys.com" target=3D"_blank">t= omkcpr@mdevsys.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote= " style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p= adding-left:1ex">Hey Guy's,<br> <br> If I'm looking to setup the oVirt engine in an HA configuration off the phys= ical servers hosting my VM's (non self hosted), what are my options here?<br=
<br> I want to setup two to four active oVirt engine instances elsewhere and hand= le the HA via something like haproxy / keepalived to keep the entire experie= nce seamless to the user.<br></blockquote><div><br></div><div>You will need t= o set up the oVirt engine service as well as the PG database (and ovirt-engi= ne-dwhd service and any other service we run next to the engine) as highly a= vailable module.</div><div>In pacemaker[1], for example. </div><div>You= 'll need to ensure configuration is also sync'ed between nodes, etc.</div><d= iv>Y.</div></div></div></div></div></blockquote><div><br></div><div>So alrea= dy have one ovirt engine setup separately on a vm that manages two remote ph= ysical hosts. So familiar with the single host approach which I would s= imply replicate. At least that=E2=80=99s the idea anyway. Could y= ou please expand a bit on the highly available module and syncing the c= onfig between hosts?</div><div><br></div><div>Cheers,</div><div>Tom</div><br=
<blockquote type=3D"cite"><div><div dir=3D"ltr"><div class=3D"gmail_extra">= <div class=3D"gmail_quote"><div><br></div><div>[1] <a href=3D"https://c= lusterlabs.org/quickstart-redhat.html">https://clusterlabs.org/quickstart-re= dhat.html</a></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px= 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br> =46rom what I've seen in oVirt, that seems to be possible without the two oV= irt engines even knowing each other's existence but is it something anyone h= as ever done? Any recommendations in this case?<br> <br> Having settings replicated would be a bonus but I would be comfortable if th= ey weren't and I handle that myself.<span class=3D"gmail-HOEnZb"><font color= =3D"#888888"><br> <br> -- <br> Cheers,<br> Tom K.<br> ------------------------------<wbr>------------------------------<wbr>------= -------------------<br> <br> Living on earth is expensive, but it includes a free trip around the sun.<br=
<br> ______________________________<wbr>_________________<br> Users mailing list<br> <a href=3D"mailto:Users@ovirt.org" target=3D"_blank">Users@ovirt.org</a><br>= <a href=3D"http://lists.ovirt.org/mailman/listinfo/users" rel=3D"noreferrer"= target=3D"_blank">http://lists.ovirt.org/mailman<wbr>/listinfo/users</a><br=
</font></span></blockquote></div><br></div></div> </div></blockquote></body></html>= --Apple-Mail-8EEA9417-92E9-48C9-891E-62232D2A400E--
On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com> wrote:
Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com> wrote:
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts?
That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config. Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.... . But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup. Y.
Cheers, Tom
[1] https://clusterlabs.org/quickstart-redhat.html
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto:tk@mdevsys.com>> wrote:
Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com>> wrote:
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com>> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts?
That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config.
I think there's a postgres component too and if oVirt engine keeps all it's date on the postgres tables, then synchronizing this piece might be all I need? I'm not sure how the separate oVirt engines sitting on various separate physical hosts keep their settings in sync about the rest of the physicals in an oVirt environment. (Assume we may have 100 oVirt physicals for example.)
Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.... .
But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup.
I'm comparing both options. I really don't want to ask too many specific until I have the chance to read into the details of both.
Y.
Cheers, Tom
Cheers, Tom
[1] https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html>
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K. -------------------------------------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>
-- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun.
The norm is to have a cluster with shared storage. So you have 3 to 5 hardware noed that shares storage for the hosted engine. That shared storage is in sync. So you don't have one engine per physical node. If one hardware node goes down the engine is restarted on another node with the help of hosted-engine service. /Johan On April 5, 2018 08:11:50 TomK <tomkcpr@mdevsys.com> wrote: On 4/4/2018 3:11 AM, Yaniv Kaul wrote: On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto:tk@mdevsys.com>> wrote: Sent from my iPhone On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com>> wrote: On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com>> wrote: Hey Guy's, If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here? I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user. You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y. So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts? That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config. I think there's a postgres component too and if oVirt engine keeps all it's date on the postgres tables, then synchronizing this piece might be all I need? I'm not sure how the separate oVirt engines sitting on various separate physical hosts keep their settings in sync about the rest of the physicals in an oVirt environment. (Assume we may have 100 oVirt physicals for example.) Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.... . But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup. I'm comparing both options. I really don't want to ask too many specific until I have the chance to read into the details of both. Y. Cheers, Tom Cheers, Tom [1] https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html>
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself. -- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun. _______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users> -- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Thu, Apr 5, 2018 at 9:08 AM, TomK <tomkcpr@mdevsys.com> wrote:
On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto: tk@mdevsys.com>> wrote:
Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com>> wrote:
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com>> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts?
That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config.
I think there's a postgres component too and if oVirt engine keeps all it's date on the postgres tables, then synchronizing this piece might be all I need? I'm not sure how the separate oVirt engines sitting on various separate physical hosts keep their settings in sync about the rest of the physicals in an oVirt environment. (Assume we may have 100 oVirt physicals for example.)
There's more than just the database, although it contains 99% of what you need. See the content of the result of 'engine-backup' command. I think you might be somewhat confusing between the number of oVirt hypervisors (we support hundreds) and the Engine - the management, which is single - and with hosted-engine, it's a single, but highly available virtual machine - that can run on one of several (I suggest 3-8) of those hypervisors. Y.
Perhaps something like https://www.unixarena.com/2015
/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html .
But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup.
I'm comparing both options. I really don't want to ask too many specific until I have the chance to read into the details of both.
Y.
Cheers, Tom
Cheers, Tom
[1] https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html>
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
--Apple-Mail-4B0B2051-EB24-44AE-A545-BDB6E488A3E7 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Sent from my iPhone > On Apr 5, 2018, at 5:29 AM, Yaniv Kaul <ykaul@redhat.com> wrote: >=20 >=20 >=20 >> On Thu, Apr 5, 2018 at 9:08 AM, TomK <tomkcpr@mdevsys.com> wrote: >>> On 4/4/2018 3:11 AM, Yaniv Kaul wrote: >>>=20 >>>=20 >>> On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto:tk@mdevsys.= com>> wrote: >>>=20 >>>=20 >>>=20 >>> Sent from my iPhone >>>=20 >>> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com >>> <mailto:ykaul@redhat.com>> wrote: >>>=20 >>>>=20 >>>>=20 >>>> On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com >>>> <mailto:tomkcpr@mdevsys.com>> wrote: >>>>=20 >>>> Hey Guy's, >>>>=20 >>>> If I'm looking to setup the oVirt engine in an HA >>>> configuration off the physical servers hosting my VM's (non >>>> self hosted), what are my options here? >>>>=20 >>>> I want to setup two to four active oVirt engine instances >>>> elsewhere and handle the HA via something like haproxy / >>>> keepalived to keep the entire experience seamless to the user. >>>>=20 >>>>=20 >>>> You will need to set up the oVirt engine service as well as the PG >>>> database (and ovirt-engine-dwhd service and any other service we >>>> run next to the engine) as highly available module. >>>> In pacemaker[1], for example. >>>> You'll need to ensure configuration is also sync'ed between nodes, >>>> etc. >>>> Y. >>>=20 >>> So already have one ovirt engine setup separately on a vm that >>> manages two remote physical hosts. So familiar with the single host= >>> approach which I would simply replicate. At least that=E2=80=99s th= e idea >>> anyway. Could you please expand a bit on the highly available >>> module and syncing the config between hosts? >>>=20 >>>=20 >>> That's a different strategy, which is also legit - you treat this VM as a= highly available resource. Now you do not need to sync the config - just th= e VM disk and config. >>=20 >> I think there's a postgres component too and if oVirt engine keeps all it= 's date on the postgres tables, then synchronizing this piece might be all I= need? I'm not sure how the separate oVirt engines sitting on various separ= ate physical hosts keep their settings in sync about the rest of the physica= ls in an oVirt environment. (Assume we may have 100 oVirt physicals for exam= ple.) >=20 > There's more than just the database, although it contains 99% of what you n= eed. See the content of the result of 'engine-backup' command. > I think you might be somewhat confusing between the number of oVirt hyperv= isors (we support hundreds) and the Engine - the management, which is single= - and with hosted-engine, it's a single, but highly available virtual machi= ne - that can run on one of several (I suggest 3-8) of those hypervisors. > Y. Yah, still very new to much of this. Thank you again. I=E2=80=99ll take that away and do some reading. =20 Cheers, Tom > =20 >>=20 >>=20 >>> Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemake= r-configuring-ha-kvm-guest.html . >>>=20 >>> But if you are already doing that, I'm not sure why you'd prefer this ov= er hosted-engine setup. >>=20 >> I'm comparing both options. I really don't want to ask too many specific= until I have the chance to read into the details of both. >>=20 >>> Y. >>=20 >> Cheers, >> Tom >>=20 >>>=20 >>>=20 >>> Cheers, >>> Tom >>>=20 >>>>=20 >>>> [1] https://clusterlabs.org/quickstart-redhat.html >>>> <https://clusterlabs.org/quickstart-redhat.html> >>>>=20 >>>>=20 >>>> =46rom what I've seen in oVirt, that seems to be possible >>>> without the two oVirt engines even knowing each other's >>>> existence but is it something anyone has ever done? Any >>>> recommendations in this case? >>>>=20 >>>> Having settings replicated would be a bonus but I would be >>>> comfortable if they weren't and I handle that myself. >>>>=20 >>>> -- Cheers, >>>> Tom K. >>>> ---------------------------------------------------------------= ---------------------- >>>>=20 >>>> Living on earth is expensive, but it includes a free trip >>>> around the sun. >>>>=20 >>>> _______________________________________________ >>>> Users mailing list >>>> Users@ovirt.org <mailto:Users@ovirt.org> >>>> http://lists.ovirt.org/mailman/listinfo/users >>>> <http://lists.ovirt.org/mailman/listinfo/users> >>>>=20 >>>>=20 >>>=20 >>=20 >>=20 >> --=20 >> Cheers, >> Tom K. >> -------------------------------------------------------------------------= ------------ >>=20 >> Living on earth is expensive, but it includes a free trip around the sun.= >>=20 >=20 --Apple-Mail-4B0B2051-EB24-44AE-A545-BDB6E488A3E7 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D= utf-8"></head><body dir=3D"auto"><br><br><div id=3D"AppleMailSignature">Sent= from my iPhone</div><div><br>On Apr 5, 2018, at 5:29 AM, Yaniv Kaul <<a h= ref=3D"mailto:ykaul@redhat.com">ykaul@redhat.com</a>> wrote:<br><br></div= ><blockquote type=3D"cite"><div><div dir=3D"ltr"><br><div class=3D"gmail_ext= ra"><br><div class=3D"gmail_quote">On Thu, Apr 5, 2018 at 9:08 AM, TomK <spa= n dir=3D"ltr"><<a href=3D"mailto:tomkcpr@mdevsys.com" target=3D"_blank">t= omkcpr@mdevsys.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote= " style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On= 4/4/2018 3:11 AM, Yaniv Kaul wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"><span class=3D""> <br> <br> On Wed, Apr 4, 2018 at 12:39 AM, Tom <<a href=3D"mailto:tk@mdevsys.com" t= arget=3D"_blank">tk@mdevsys.com</a> <mailto:<a href=3D"mailto:tk@mdevsys.= com" target=3D"_blank">tk@mdevsys.com</a>>> wrote:<br> <br> <br> <br> Sent from my iPhone<br> <br> On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <<a href=3D"mailto:y= kaul@redhat.com" target=3D"_blank">ykaul@redhat.com</a><br></span> <mailto:<a href=3D"mailto:ykaul@redhat.com" target=3D"_blan= k">ykaul@redhat.com</a>>> wrote:<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"><span class=3D""> <br> <br> On Tue, Apr 3, 2018 at 3:12 PM, TomK <<a href=3D"mailto:tom= kcpr@mdevsys.com" target=3D"_blank">tomkcpr@mdevsys.com</a><br></span><span c= lass=3D""> <mailto:<a href=3D"mailto:tomkcpr@mdevsys.com" target=3D"_b= lank">tomkcpr@mdevsys.com</a>>> wrote:<br> <br> Hey Guy's,<br> <br> If I'm looking to setup the oVirt engine in an H= A<br> configuration off the physical servers hosting m= y VM's (non<br> self hosted), what are my options here?<br> <br> I want to setup two to four active oVirt engine i= nstances<br> elsewhere and handle the HA via something like h= aproxy /<br> keepalived to keep the entire experience seamles= s to the user.<br> <br> <br> You will need to set up the oVirt engine service as well as th= e PG<br> database (and ovirt-engine-dwhd service and any other service w= e<br> run next to the engine) as highly available module.<br> In pacemaker[1], for example.<br> You'll need to ensure configuration is also sync'ed between no= des,<br> etc.<br> Y.<br> </span></blockquote><span class=3D""> <br> So already have one ovirt engine setup separately on a vm that= <br> manages two remote physical hosts. So familiar with the s= ingle host<br> approach which I would simply replicate. At least that=E2= =80=99s the idea<br> anyway. Could you please expand a bit on the highly avai= lable<br> module and syncing the config between hosts?<br> <br> <br> That's a different strategy, which is also legit - you treat this VM as a hi= ghly available resource. Now you do not need to sync the config - just the V= M disk and config.<br> </span></blockquote> <br> I think there's a postgres component too and if oVirt engine keeps all it's d= ate on the postgres tables, then synchronizing this piece might be all I nee= d? I'm not sure how the separate oVirt engines sitting on various sepa= rate physical hosts keep their settings in sync about the rest of the physic= als in an oVirt environment. (Assume we may have 100 oVirt physicals for exa= mple.)</blockquote><div><br></div><div>There's more than just the database, a= lthough it contains 99% of what you need. See the content of the result of '= engine-backup' command.</div><div>I think you might be somewhat confusing be= tween the number of oVirt hypervisors (we support hundreds) and the Engine -= the management, which is single - and with hosted-engine, it's a single, bu= t highly available virtual machine - that can run on one of several (I sugge= st 3-8) of those hypervisors.</div><div>Y.</div></div></div></div></div></bl= ockquote><div><br></div><div>Yah, still very new to much of this. Than= k you again.</div><div><br></div><div>I=E2=80=99ll take that away and do som= e reading. </div><div><br></div><div>Cheers,</div><div>Tom</div><br><b= lockquote type=3D"cite"><div><div dir=3D"ltr"><div class=3D"gmail_extra"><di= v class=3D"gmail_quote"><div> </div><blockquote class=3D"gmail_quote" s= tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span= class=3D""><br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"> Perhaps something like <a href=3D"https://www.unixarena.com/2015/12/rhel-7-p= acemaker-configuring-ha-kvm-guest.html" rel=3D"noreferrer" target=3D"_blank"= >https://www.unixarena.com/2015<wbr>/12/rhel-7-pacemaker-configuri<wbr>ng-ha= -kvm-guest.html</a> .<br> <br> But if you are already doing that, I'm not sure why you'd prefer this over h= osted-engine setup.<br> </blockquote> <br></span> I'm comparing both options. I really don't want to ask too many specif= ic until I have the chance to read into the details of both.<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"> Y.<br> </blockquote> <br> Cheers,<br> Tom<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"> <br> <br> Cheers,<br> Tom<br> <br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex"><span class=3D""> <br> [1] <a href=3D"https://clusterlabs.org/quickstart-redhat.html"= rel=3D"noreferrer" target=3D"_blank">https://clusterlabs.org/quicks<wbr>tar= t-redhat.html</a><br> <<a href=3D"https://clusterlabs.org/quickstart-redhat.html"= rel=3D"noreferrer" target=3D"_blank">https://clusterlabs.org/quick<wbr>star= t-redhat.html</a>><br> <br> <br> =46rom what I've seen in oVirt, that seems to be= possible<br> without the two oVirt engines even knowing each o= ther's<br> existence but is it something anyone has ever do= ne? Any<br> recommendations in this case?<br> <br> Having settings replicated would be a bonus but I= would be<br> comfortable if they weren't and I handle that my= self.<br> <br> -- Cheers,<br> Tom K.<br> ------------------------------<wbr>-------------= -----------------<wbr>-------------------------<br> <br> Living on earth is expensive, but it includes a f= ree trip<br> around the sun.<br> <br> ______________________________<wbr>_____________= ____<br> Users mailing list<br></span> <a href=3D"mailto:Users@ovirt.org" target=3D"_bl= ank">Users@ovirt.org</a> <mailto:<a href=3D"mailto:Users@ovirt.org" targe= t=3D"_blank">Users@ovirt.org</a>><br> <a href=3D"http://lists.ovirt.org/mailman/listin= fo/users" rel=3D"noreferrer" target=3D"_blank">http://lists.ovirt.org/mailma= n<wbr>/listinfo/users</a><br> <<a href=3D"http://lists.ovirt.org/mailman/li= stinfo/users" rel=3D"noreferrer" target=3D"_blank">http://lists.ovirt.org/ma= ilma<wbr>n/listinfo/users</a>><br> <br> <br> </blockquote> <br> </blockquote><div class=3D"HOEnZb"><div class=3D"h5"> <br> <br> -- <br> Cheers,<br> Tom K.<br> ------------------------------<wbr>------------------------------<wbr>------= -------------------<br> <br> Living on earth is expensive, but it includes a free trip around the sun.<br= > <br> </div></div></blockquote></div><br></div></div> </div></blockquote></body></html>= --Apple-Mail-4B0B2051-EB24-44AE-A545-BDB6E488A3E7--
On 4/5/2018 8:59 AM, Tom wrote:
Sent from my iPhone
On Apr 5, 2018, at 5:29 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com>> wrote:
On Thu, Apr 5, 2018 at 9:08 AM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com>> wrote:
On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto:tk@mdevsys.com> <mailto:tk@mdevsys.com <mailto:tk@mdevsys.com>>> wrote:
Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com> <mailto:ykaul@redhat.com <mailto:ykaul@redhat.com>>> wrote:
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com> <mailto:tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com>>> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts?
That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config.
I think there's a postgres component too and if oVirt engine keeps all it's date on the postgres tables, then synchronizing this piece might be all I need? I'm not sure how the separate oVirt engines sitting on various separate physical hosts keep their settings in sync about the rest of the physicals in an oVirt environment. (Assume we may have 100 oVirt physicals for example.)
There's more than just the database, although it contains 99% of what you need. See the content of the result of 'engine-backup' command. I think you might be somewhat confusing between the number of oVirt hypervisors (we support hundreds) and the Engine - the management, which is single - and with hosted-engine, it's a single, but highly available virtual machine - that can run on one of several (I suggest 3-8) of those hypervisors. Y.
Yah, still very new to much of this. Thank you again.
I’ll take that away and do some reading.
Cheers, Tom
"that can run on one of several (I suggest 3-8) of those hypervisors." To clarify. So if I have 3-8 copies of the oVirt Engine in a self-hosted config, only one can run at any one time? Is this correct? Cheers, Tom
Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.... <https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuring-ha-kvm-guest.html> .
But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup.
I'm comparing both options. I really don't want to ask too many specific until I have the chance to read into the details of both.
Y.
Cheers, Tom
Cheers, Tom
[1] https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html> <https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html>>
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K.
-------------------------------------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> <mailto:Users@ovirt.org <mailto:Users@ovirt.org>> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users> <http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>>
-- Cheers, Tom K. -------------------------------------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
-- Cheers, Tom K. ------------------------------------------------------------------------------------- Living on earth is expensive, but it includes a free trip around the sun.
On Sun, Apr 15, 2018 at 4:26 AM, TomK <tomkcpr@mdevsys.com> wrote:
On 4/5/2018 8:59 AM, Tom wrote:
Sent from my iPhone
On Apr 5, 2018, at 5:29 AM, Yaniv Kaul <ykaul@redhat.com <mailto: ykaul@redhat.com>> wrote:
On Thu, Apr 5, 2018 at 9:08 AM, TomK <tomkcpr@mdevsys.com <mailto: tomkcpr@mdevsys.com>> wrote:
On 4/4/2018 3:11 AM, Yaniv Kaul wrote:
On Wed, Apr 4, 2018 at 12:39 AM, Tom <tk@mdevsys.com <mailto:tk@mdevsys.com> <mailto:tk@mdevsys.com <mailto:tk@mdevsys.com>>> wrote:
Sent from my iPhone
On Apr 3, 2018, at 9:32 AM, Yaniv Kaul <ykaul@redhat.com <mailto:ykaul@redhat.com> <mailto:ykaul@redhat.com <mailto:ykaul@redhat.com>>> wrote:
On Tue, Apr 3, 2018 at 3:12 PM, TomK <tomkcpr@mdevsys.com <mailto:tomkcpr@mdevsys.com> <mailto:tomkcpr@mdevsys.com
<mailto:tomkcpr@mdevsys.com>>> wrote:
Hey Guy's,
If I'm looking to setup the oVirt engine in an HA configuration off the physical servers hosting my VM's (non self hosted), what are my options here?
I want to setup two to four active oVirt engine instances elsewhere and handle the HA via something like haproxy / keepalived to keep the entire experience seamless to the user.
You will need to set up the oVirt engine service as well as the PG database (and ovirt-engine-dwhd service and any other service we run next to the engine) as highly available module. In pacemaker[1], for example. You'll need to ensure configuration is also sync'ed between nodes, etc. Y.
So already have one ovirt engine setup separately on a vm that manages two remote physical hosts. So familiar with the single host approach which I would simply replicate. At least that’s the idea anyway. Could you please expand a bit on the highly available module and syncing the config between hosts?
That's a different strategy, which is also legit - you treat this VM as a highly available resource. Now you do not need to sync the config - just the VM disk and config.
I think there's a postgres component too and if oVirt engine keeps all it's date on the postgres tables, then synchronizing this piece might be all I need? I'm not sure how the separate oVirt engines sitting on various separate physical hosts keep their settings in sync about the rest of the physicals in an oVirt environment. (Assume we may have 100 oVirt physicals for example.)
There's more than just the database, although it contains 99% of what you need. See the content of the result of 'engine-backup' command. I think you might be somewhat confusing between the number of oVirt hypervisors (we support hundreds) and the Engine - the management, which is single - and with hosted-engine, it's a single, but highly available virtual machine - that can run on one of several (I suggest 3-8) of those hypervisors. Y.
Yah, still very new to much of this. Thank you again.
I’ll take that away and do some reading.
Cheers, Tom
"that can run on one of several (I suggest 3-8) of those hypervisors." To clarify. So if I have 3-8 copies of the oVirt Engine in a self-hosted config, only one can run at any one time? Is this correct?
'One Engine to rule them all.' Y.
Cheers, Tom
Perhaps something like https://www.unixarena.com/2015/12/rhel-7-pacemaker-configuri ng-ha-kvm-guest.html <https://www.unixarena.com/2015/12/rhel-7-pacemaker-configur ing-ha-kvm-guest.html> .
But if you are already doing that, I'm not sure why you'd prefer this over hosted-engine setup.
I'm comparing both options. I really don't want to ask too many specific until I have the chance to read into the details of both.
Y.
Cheers, Tom
Cheers, Tom
[1] https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html> <https://clusterlabs.org/quickstart-redhat.html <https://clusterlabs.org/quickstart-redhat.html>>
From what I've seen in oVirt, that seems to be possible without the two oVirt engines even knowing each other's existence but is it something anyone has ever done? Any recommendations in this case?
Having settings replicated would be a bonus but I would be comfortable if they weren't and I handle that myself.
-- Cheers, Tom K. ----------------------------- --------------------------------------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> <mailto:Users@ovirt.org <mailto:Users@ovirt.org>> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users> <http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>>
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
-- Cheers, Tom K. ------------------------------------------------------------ -------------------------
Living on earth is expensive, but it includes a free trip around the sun.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
participants (4)
-
Johan Bernhardsson -
Tom -
TomK -
Yaniv Kaul