Hosted engine : rebuild without backups ?
--=_62f810b8f4d72b7d533cbfaf8d5506c2 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi,=0A In case of a total failure of the hosted engine VM, it is recom= mended to recreate a new one and restore a backup. I hope it works, I wi= ll probably have to do this very soon. But is there some kind of "plug= and play" features, able to rebuild configuration by browsing storage d= omains, if the restore process doesn't work ? Something like identifyi= ng VMs and their snapshots in the subdirectories, and the guess what is= linked to what, ... ? I have a few machines but if I have to rebuild= all the engine setup and content, I would like to be able to identify r= esources easily. A few times ago, I was doing some experiments with Xe= nServer and destroyed/recreated some setup items : I ended with a lot of= oprhan resources, and it was a mess to reattach snapshots to their resp= ective VMs. So if oVirt is more helpful in that way ... Regards =0A=0A= ------------------------------------------------------------------------= -------------------------=0AFreeMail powered by mail.fr --=_62f810b8f4d72b7d533cbfaf8d5506c2 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <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;">In case of a total failure of the hosted engine VM,= it is recommended to recreate a new one and restore a backup. I hope it= works, I will probably have to do this very soon.</span></div>=0A<div>&= nbsp;</div>=0A<div><span style=3D"font-family: arial, helvetica,sans-ser= if; font-size: 10pt; color: #000000;">But is there some kind of "plug an= d play" features, able to rebuild configuration by browsing storage doma= ins, if the restore process doesn't work ?</span></div>=0A<div> </d= iv>=0A<div><span style=3D"font-family: arial, helvetica,sans-serif; font= -size: 10pt; color: #000000;">Something like identifying VMs and their s= napshots in the subdirectories, and the guess what is linked to what, ..= . ? </span></div>=0A<div> </div>=0A<div><span style=3D"font-family:= arial, helvetica,sans-serif; font-size: 10pt; color: #000000;">I have a= few machines but if I have to rebuild all the engine setup and content,= I would like to be able to identify resources easily.</span></div>=0A<d= iv> </div>=0A<div><span style=3D"font-family: arial, helvetica,sans= -serif; font-size: 10pt; color: #000000;">A few times ago, I was doing s= ome experiments with XenServer and destroyed/recreated some setup items= : I ended with a lot of oprhan resources, and it was a mess to reattach= snapshots to their respective VMs. So if oVirt is more helpful in that= way ...</span></div>=0A<div><span style=3D"font-family: arial, helvetic= a,sans-serif; font-size: 10pt; color: #000000;"> </span></div>=0A<d= iv><span style=3D"font-family: arial, helvetica,sans-serif; font-size: 1= 0pt; color: #000000;">Regards</span></div>=0A <br/><h= r>FreeMail powered by <a href=3D"https://mail.fr" target=3D"_blank">mail= .fr</a>=0A --=_62f810b8f4d72b7d533cbfaf8d5506c2--
On Fri, Mar 16, 2018 at 2:48 PM, <spfma.tech@e.mail.fr> wrote:
Hi,
In case of a total failure of the hosted engine VM, it is recommended to recreate a new one and restore a backup. I hope it works, I will probably have to do this very soon.
But is there some kind of "plug and play" features, able to rebuild configuration by browsing storage domains, if the restore process doesn't work ?
It's called "Import Storage Domain" in oVirt.
Something like identifying VMs and their snapshots in the subdirectories, and the guess what is linked to what, ... ?
I have a few machines but if I have to rebuild all the engine setup and content, I would like to be able to identify resources easily.
A few times ago, I was doing some experiments with XenServer and destroyed/recreated some setup items : I ended with a lot of oprhan resources, and it was a mess to reattach snapshots to their respective VMs. So if oVirt is more helpful in that way ...
If you try this: 1. Try first on a test setup, as always 2. Make sure to _not_ import the hosted-storage domain, the one used to host the hosted-engine VM. 3. So: setup a new hosted-engine system, then import your _other_ storage domains. Ideally make sure the old hosted storage is not accessible to the new system, so that the new engine does not try to import it accidentally. 4. If you do try to import, for testing, the old hosted-storage, would be interesting if you share the results... Best regards, -- Didi
--=_fa059df46b7d56aa686c59ced36bcf2e Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi,=0A I gave up trying to restore a backup of my former hosted engine= , I never managed to get engine and nodes communicate again and I need t= o go on. So I installed a new engine (let's try a dedicated one this t= ime) and imported the storage domains successfully. After attaching and= activating them, it seems to be ok and the first VMs I imported are now= running fine. So I just have to redefine logical networks and configu= re them on the hosts, and it is ok ? Maybe final step will be turning= dedicated engine to hosted, I don't know yet. Regards =0A=0A Le 18-= Mar-2018 08:28:15 +0100, didi@redhat.com a crit: =0AOn Fri, Mar 16, 20= 18 at 2:48 PM, wrote:=0A > Hi,=0A >=0A > In case of a total failure of= the hosted engine VM, it is recommended to=0A > recreate a new one and= restore a backup. I hope it works, I will probably=0A > have to do this= very soon.=0A >=0A > But is there some kind of "plug and play" features= , able to rebuild=0A > configuration by browsing storage domains, if the= restore process doesn't=0A > work ?=0A=0A It's called "Import Storage D= omain" in oVirt.=0A=0A >=0A > Something like identifying VMs and their s= napshots in the subdirectories,=0A > and the guess what is linked to wha= t, ... ?=0A >=0A > I have a few machines but if I have to rebuild all th= e engine setup and=0A > content, I would like to be able to identify res= ources easily.=0A >=0A > A few times ago, I was doing some experiments w= ith XenServer and=0A > destroyed/recreated some setup items : I ended wi= th a lot of oprhan=0A > resources, and it was a mess to reattach snapsho= ts to their respective VMs.=0A > So if oVirt is more helpful in that way= ...=0A=0A If you try this:=0A=0A 1. Try first on a test setup, as alway= s=0A 2. Make sure to _not_ import the hosted-storage domain, the one use= d to=0A host the hosted-engine VM.=0A 3. So: setup a new hosted-engine s= ystem, then import your _other_ storage=0A domains. Ideally make sure th= e old hosted storage is not accessible to=0A the new system, so that the= new engine does not try to import it accidentally.=0A 4. If you do try= to import, for testing, the old hosted-storage, would be=0A interesting= if you share the results...=0A=0A Best regards,=0A -- =0A Didi =0A=0A--= ------------------------------------------------------------------------= -----------------------=0AFreeMail powered by mail.fr --=_fa059df46b7d56aa686c59ced36bcf2e Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <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;">I gave up trying to restore a backup of my former h= osted engine, I never managed to get engine and nodes communicate again= and I need to go on.</span></div>=0A<div> </div>=0A<div><span styl= e=3D"font-family: arial, helvetica,sans-serif; font-size: 10pt; color: #= 000000;">So I installed a new engine (let's try a dedicated one this tim= e) and imported the storage domains successfully.</span></div>=0A<div>Af= ter attaching and activating them, it seems to be ok and the first VMs I= imported are now running fine.</div>=0A<div> </div>=0A<div><span s= tyle=3D"font-family: arial, helvetica,sans-serif; font-size: 10pt; color= : #000000;">So I just have to redefine logical networks and configure th= em on the hosts, and it is ok ?</span></div>=0A<div> </div>=0A<div>= <span style=3D"font-family: arial, helvetica,sans-serif; font-size: 10pt= ; color: #000000;">Maybe final step will be turning dedicated engine to= hosted, I don't know yet.</span></div>=0A<div> </div>=0A<div><span= style=3D"font-family: arial, helvetica,sans-serif; font-size: 10pt; col= or: #000000;">Regards</span></div>=0A<div> </div>=0A<p><br /><br />= Le 18-Mar-2018 08:28:15 +0100, didi@redhat.com a écrit:</p>=0A<d= iv> </div>=0A<blockquote style=3D"margin-left: 0; padding-left: 5px= ; border-left: 2px solid navy;">On Fri, Mar 16, 2018 at 2:48 PM, <spf= ma.tech@e.mail.fr> wrote:<br /> > Hi,<br /> ><br /> > In cas= e of a total failure of the hosted engine VM, it is recommended to<br />= > recreate a new one and restore a backup. I hope it works, I will p= robably<br /> > have to do this very soon.<br /> ><br /> > But= is there some kind of "plug and play" features, able to rebuild<br /> &= gt; configuration by browsing storage domains, if the restore process do= esn't<br /> > work ?<br /><br /> It's called "Import Storage Domain"= in oVirt.<br /><br /> ><br /> > Something like identifying VMs an= d their snapshots in the subdirectories,<br /> > and the guess what i= s linked to what, ... ?<br /> ><br /> > I have a few machines but= if I have to rebuild all the engine setup and<br /> > content, I wou= ld like to be able to identify resources easily.<br /> ><br /> > A= few times ago, I was doing some experiments with XenServer and<br /> &g= t; destroyed/recreated some setup items : I ended with a lot of oprhan<b= r /> > resources, and it was a mess to reattach snapshots to their re= spective VMs.<br /> > So if oVirt is more helpful in that way ...<br= /><br /> If you try this:<br /><br /> 1. Try first on a test setup, as= always<br /> 2. Make sure to _not_ import the hosted-storage domain, th= e one used to<br /> host the hosted-engine VM.<br /> 3. So: setup a new= hosted-engine system, then import your _other_ storage<br /> domains. I= deally make sure the old hosted storage is not accessible to<br /> the n= ew system, so that the new engine does not try to import it accidentally= .<br /> 4. If you do try to import, for testing, the old hosted-storage,= would be<br /> interesting if you share the results...<br /><br /> Best= regards,<br /> -- <br /> Didi</blockquote>=0A <br/><= hr>FreeMail powered by <a href=3D"https://mail.fr" target=3D"_blank">mai= l.fr</a>=0A --=_fa059df46b7d56aa686c59ced36bcf2e--
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spfma.tech＠e.mail.fr -
Yedidyah Bar David