- Users - oVirt List Archives

Re: [Users] simple networking?
by Ted Miller 02 Dec '13

02 Dec '13

On 11/28/2013 3:54 AM, noc wrote: > On 27-11-2013 18:18, Ted Miller wrote: >> I am trying to set up a testing network using o-virt, but the networking >> is refusing to cooperate. I am testing for possible use in two different >> production setups. >> >> My previous experience has been with VMWare. I have always set up a >> single bridged network on each host. All my hosts, VMs, and non-VM >> computers were peers on the LAN. They could all talk to each other, and >> things worked very well. There was a firewall/gateway that provided >> access to the Internet, and hosts, VMs, and could all communicate with the >> Internet as needed. >> >> o-virt seems to be compartmentalizing things beyond all reason. > That is a way to use oVirt, but the following simple setup should work and > give you a way to check against your setup. > > I have two setups, one at home and one at work. The one at home is a setup > of 2 hosts and one of those is a hacked up host/engine. > engine/host1: standard fedora19 kde install, static ip (192.168.1.11) > configured with my NAS (192.168.1.16) as dhcp/dns server and my internet > router (192.168.1.254) as gateway > Just make sure that NetworkManager is off and that your interfaces are not > NM managed, network on. > This was a allinone setup but I got a NAS with NFS so I turned my aio setup > into a engine/host system. It has problems with that but nothing network > related. > > Host2: same as above but without the engine install, ip:192.168.1.22, gw > 192.168.1.254 DNS:192.168.1.16. > > How does it all come together? > Well in your case, and mine if I were to start over, start with a static > network which is NOT managed by NetworkManager. Use either Fedora or Centos > which ever you more comfortable with and it also depends on whether you > want to test/use all the features in oVirt. Currently, there are a few > features not available in Centos because the versions of > libvirt/kvm/qemu/gluster are too old in Centos. > Install ovirt-engine on your first 'server', probably choose NFS as your > storage domain, either on your engine server or from somewhere else on your > network. Make sure its nfs-v3 and not v4!, local default is v4! > Make sure that ip addresses on you network are resolvable, either through > /etc/hosts or through DNS! Engine-setup will complain if this doesn't work, > using localhost will not work either! > On the engine server there will be no bridge and nothing will change the > network config. > > Next the first host. > Prepare the host in a similar way you did the engine server. You can choose > a minimal install of either Centos or Fedora or install a full desktop but > make sure that ips are static and NOT managed by NetworkManager, hostname > resolvable, ovirt repo available. > > From the webui add your prepared host and if everything went OK you'll see > that on that host you will now have a bridge, ovirtmgmt, which acts as the > primary interface. > Create a VMs and choose ovirtmgmt as a network for its nics, can't choose > anything else. Either give the VMs a static address or use a dhcp server > but the VMs should be able to talk to each other, to the host(s), the > engine and to the internet. > > Every host that you add after the first will also has its network turned > into a bridge, ovirtmgmt, and communication/migration/display/etc will take > place over this network. One caveat, storage domain mapping is from the > host to the storage, the engine, if it is NOT the NFS server, doesn't have > to have access to the storage. > > If you have servers with more that 1 nic then you can create additional > networks using the webui of oVirt and assign these to clusters and to VMs. > > If you need vlans to coexist with ovirtmgmt on the same physical nic, I > think that is possible but haven't tried it myself. In theory you need to > setup the network first outside of oVirt, including you vlan structure and > then install ovirt. > > Some concepts: > oVirt engine: is just the manager, does 'nothing' related to running VMs > itself. You can turn it off and all hosts with their VMs will keep running. > You just can't start new ones, in short manage them. > oVirt host: is the real workhorse and is managed using oVirt-engine. Runs > VDSM which communicates with engine and starts/manages the VMs on the host > on behalf of engine. > oVirt node: is a special slimmed down Fedora distro that includes VDSM and > a small setup so that it can be used as a oVirt host > > People tend to mix and match ovirt-host and ovirt-node which makes for nice > communication problems :-) > > If you haven't done so, there is an irc channel, ovirt, on irc.oftc.net > with helpful people, if they are awake. > > Joop > -- > #irc jvandewege > When I get another project out of the way (hopefully this week), I will be able to get back to my test setup and try again. Between your info, something I stumbled onto on a blog, and the info from Mike, I hope to have enough to make some progress when I take another stab at it. Ted Miller

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Re: [Users] simple networking?
by Juan Pablo Lorier 02 Dec '13

02 Dec '13

Hi Ted, I've lost the beggining of the thread so excuse me if I'm wrong about the topic. Do you want to get all the vms and host in the same subnet as the rest of your lan or the hole collision domain? When you create the logical networks (LN) in ovirt you can check if they are required or not. If you decide that all your hosts must give access to some subnet for vm use, you can create a LN, mark it as required in your data center (DC) and configure it in every host you have in the dc. Then you have two choices, if you just want the vms to access that subnet, add it to the host without configuring the ip on the host and you'll just get a bridge for vm use. If you want the host to use the bridge also, configure the ip and you'll get both, vms and host to be in the subnet. If what you need is to get every vm access to the hole collision domain, then I don't think you can do it in ovirt as you get a bridge for every logical network and if you have both, tagged and untagged vlan traffic, you won't be able use the same nic (or bond) to place mixed LNs (a limitation I've rised but yet haven't been resolved). Hope this helps. Regards,

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Re: [Users] backups
by Martijn Grendelman 02 Dec '13

02 Dec '13

Blaster schreef op 30-11-2013 21:40: > Contrary to my other post, which was more educational than practical, > yes, you generally would not back up app data via a hypervisor > snapshot. Generally you would only backup the OS disk and perhaps the > application binaries. This would be for quick restore of the OS and > app, so you don't have to spend hours reconfiguring your OS. > (especially Windows based OSes....) > > I also do an IN OS backup as well, for individual file restores in the > instances you accidentally destroy something in /etc for example. If your backups are 1) recent and 2) consistent (to a level that suits you), what does it matter how you make them? Cheers, Martijn.

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[Users] oVirt 3.4 SLA & Scheduling features overview: Minutes
by Gilad Chaplik 02 Dec '13

02 Dec '13

<ovirtbot> Minutes: http://ovirt.org/meetings/ovirt/2013/ovirt.2013-12-02-15.02.html <ovirtbot> Minutes (text): http://ovirt.org/meetings/ovirt/2013/ovirt.2013-12-02-15.02.txt <ovirtbot> Log: http://ovirt.org/meetings/ovirt/2013/ovirt.2013-12-02-15.02.log.html ============== #ovirt Meeting ============== Meeting started by gchaplik_ at 15:02:00 UTC. The full logs are available at http://ovirt.org/meetings/ovirt/2013/ovirt.2013-12-02-15.02.log.html . Meeting summary --------------- * oVirt 3.4 SLA & Scheduling features (gchaplik_, 15:02:08) * brief description of oVirt 3.4 SLA & Scheduling features (gchaplik_, 15:02:27) * agenda (gchaplik_, 15:03:23) * time based policy (SLA during the day, power saving at night) (Kobi) (gchaplik_, 15:03:59) * application level HA (monitor the service inside the VM) (Jiri) (gchaplik_, 15:04:08) * power saving policy moving hosts to sleep (Martin) (gchaplik_, 15:04:15) * positive/negative affinity between group of VMs (Gilad) (gchaplik_, 15:04:26) * others (Doron) (gchaplik_, 15:04:33) * time based policy (SLA during the day, power saving at night) (gchaplik_, 15:04:53) * application level HA (monitor the service inside the VM) (gchaplik_, 15:14:55) * power saving policy moving hosts to sleep (gchaplik_, 15:35:27) * LINK: http://www.ovirt.org/Features/HostPowerManagementPolicy (msivak, 15:36:36) * LINK: https://bugzilla.redhat.com/show_bug.cgi?id=1035238 (msivak, 15:36:36) * AGREED: assume all hosts in same L2 (gchaplik_, 15:46:46) * AGREED: used existing fence devices (gchaplik_, 15:47:21) * positive/negative affinity between group of VMs (gchaplik_, 15:47:45) * additional RFEs (gchaplik_, 15:59:37) * AGREED: Even Distribution Policy by number of VMs policy name should clarify the distinction from standard even distribution (gchaplik_, 16:04:58) Meeting ended at 16:39:00 UTC. Action Items ------------ Action Items, by person ----------------------- * **UNASSIGNED** * (none) People Present (lines said) --------------------------- * doron (131) * msivak (75) * gchaplik_ (58) * itamar (40) * kobi (32) * jmoskovc (19) * sherold (14) * srevivo (10) * ecohen (7) * alitke (3) * ovirtbot (2) * mrao (1) Generated by `MeetBot`_ 0.1.4 .. _`MeetBot`: http://wiki.debian.org/MeetBot Thanks, Gilad.

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[Users] Public glance image repository for oVirt
by Oved Ourfalli 02 Dec '13

02 Dec '13

Hi Everyone I thought of adding a new public Glance image repository on oVirt.org, to be used in different oVirt environments. The nice thing about glance compared to current export domain is that it can be attached to multiple oVirt environments / data centers, so it can be a public image repository everyone can use. Would you see such a repository as useful? Would you use it? What type of images/virtual appliances would you find beneficial to have there? If you're interested let me know. If we see enough traction for it then I'll set it up. Thank you, Oved

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Re: [Users] simple networking?
by Ted Miller 02 Dec '13

02 Dec '13

On 11/27/2013 4:35 PM, Thomas Suckow wrote: > On 11/27/2013 01:00 PM, Ted Miller wrote: >> I am not using an all-in-one. >> >> Do you have more than one host? If not, that is a very different story, >> because it only has to "talk to itself". I have the engine on a VM (at the >> moment on a KVM host not managed by ovirt). I was trying to bring up one >> host, but couldn't get past that point. Will then have to add another host, >> and migrate the engine to running on one of those two hosts. >> Ted Miller > I don't currently, I had dabbled with adding another host but found out the > other server had a different processor and removed it. That said, my vms > can talk to eachother and the host can talk to vms and vice versa. That still doesn't offer what I need: VMs and host all talking on LAN to all other LAN residents. > It works better than when I just used virt-manager. > > After setting up the bridge on the host does it lose all network connectivity? No, it could still talk to ovirt-engine. It seemed to work the way o-virt wanted it to, just not the way I need it to. > If so it may be the same issue I was having where I had to manually > manipulate the network configuration to fix the bridge. Thanks for the answer, Ted Miller

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Re: [Users] Public glance image repository for oVirt
by Juan Pablo Lorier 02 Dec '13

02 Dec '13

Hi, I think is a great idea. There can be images of different OS with services already configured to be used as "templates" and can save lots of time in that matter. I share the concern of somehow guaranty the source of the VM. Regards,

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Re: [Users] oVirt Node 3.0.3-1 for oVirt 3.3 release
by Paul Jansen 02 Dec '13

02 Dec '13

--708812334-286253895-1385728051=:8034 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Fabian,=0AI've downloaded the =0Aovirt-node-iso-3.0.3-1.1.vdsm.fc19.iso ima= ge and have tried installing it on two separate machines.=0AWhether I do a = regular install (default boot screen option) or choose 'reinstall' from the= troubleshooting menu I get tripped up at the same spot.=0AWhen it comes ti= me to select a keyboard layout (I think this is correct) US English is the = default.=A0 I press enter at that point and after a short delay there is a = very uninformative error message that appears.=A0 I can't remember what it = is off the top of my head and the systems are at work (I'm at home now).=0A= After this point I can continue but the install fails immediately after I g= et past the install target selection screen.=0AHas anyone successfully inst= alled a node using this iso image?=0AI even tried removing partitions from = the drive beforehand, to the point of dd'ing the first 512 bytes to make su= re there was no partition table.=0AThis didn't help - I still ran into the = install error described above.=0A=0AI particularly wanted to try an FC19 ba= sed node to try out live storage migration on NFS, as I was having problems= with the EL6.4 node with this.=0AIs there a chance that that issue might b= e resolved for EL6 based nodes by an upcoming=A0 new EL6.5 based node spin?= =0A=0ASorry I cannot provide the exact error details for the install issue = now, but I can get the error detail in the next couple of days if required.= =0A=0AThanks,=0APaul=0A --708812334-286253895-1385728051=:8034 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"color:#000; background-color:#fff; font-family:ti= mes new roman, new york, times, serif;font-size:12pt"><div><span>Fabian,</s= pan></div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: = times new roman,new york,times,serif; background-color: transparent; font-s= tyle: normal;"><span>I've downloaded the </span><br><a href=3D"http://resou= rces.ovirt.org/releases/3.3/iso/ovirt-node-iso-3.0.3-1.1.vdsm.fc19.iso">ovi= rt-node-iso-3.0.3-1.1.vdsm.fc19.iso</a> image and have tried installing it = on two separate machines.</div><div style=3D"color: rgb(0, 0, 0); font-size= : 16px; font-family: times new roman,new york,times,serif; background-color= : transparent; font-style: normal;">Whether I do a regular install (default= boot screen option) or choose 'reinstall' from the troubleshooting menu I = get tripped up at the same spot.</div><div style=3D"color: rgb(0, 0, 0); fo= nt-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">When it comes time to = select a keyboard layout (I think this is correct) US English is the defaul= t.  I press enter at that point and after a short delay there is a ver= y uninformative error message that appears.  I can't remember what it = is off the top of my head and the systems are at work (I'm at home now).</d= iv><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times n= ew roman,new york,times,serif; background-color: transparent; font-style: n= ormal;">After this point I can continue but the install fails immediately a= fter I get past the install target selection screen.</div><div style=3D"col= or: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,ti= mes,serif; background-color: transparent; font-style: normal;">Has anyone s= uccessfully installed a node using this iso image?</div><div style=3D"color= : rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">I ev= en tried removing partitions from the drive beforehand, to the point of dd'= ing the first 512 bytes to make sure there was no partition table.</div><di= v style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times new rom= an,new york,times,serif; background-color: transparent; font-style: normal;= ">This didn't help - I still ran into the install error described above.</d= iv><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times n= ew roman,new york,times,serif; background-color: transparent; font-style: n= ormal;"><br></div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-= family: times new roman,new york,times,serif; background-color: transparent= ; font-style: normal;">I particularly wanted to try an FC19 based node to t= ry out live storage migration on NFS, as I was having problems with the EL6= .4 node with this.</div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: trans= parent; font-style: normal;">Is there a chance that that issue might be res= olved for EL6 based nodes by an upcoming  new EL6.5 based node spin?</= div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times = new roman,new york,times,serif; background-color: transparent; font-style: = normal;"><br></div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font= -family: times new roman,new york,times,serif; background-color: transparen= t; font-style: normal;">Sorry I cannot provide the exact error details for = the install issue now, but I can get the error detail in the next couple of= days if required.</div><div style=3D"color: rgb(0, 0, 0); font-size: 16px;= font-family: times new roman,new york,times,serif; background-color: trans= parent; font-style: normal;"><br></div><div style=3D"color: rgb(0, 0, 0); f= ont-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">Thanks,</div><div styl= e=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new= york,times,serif; background-color: transparent; font-style: normal;">Paul= </div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-family: time= s new roman,new york,times,serif; background-color: transparent; font-style= : normal;"><br></div></div></body></html> --708812334-286253895-1385728051=:8034--

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Re: [Users] backups
by Juan Pablo Lorier 02 Dec '13

02 Dec '13

Hi, Just curious, is it really the porpoise of the snapshot to backup both the vm and the application data? I think snapshot is appropriate to backup the vm and the you should have your regular backup for the app, as a database backup that can be done online. In this scenario you take a backup of the vm when something changes (updates, new software, configs, etc) and not all the time and do regular backups of the db as it's the information that changes all the time. I said this because I'm curious about the benefits of doing backups the way it's been posted. Regards,

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[Users] VM wont start
by Maurice James 02 Dec '13

02 Dec '13

------=_NextPart_000_000E_01CEEED3.64AF6710 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I get the following error when trying to start a new VM VM CentOS is down. Exit message: internal error iframe "vnet9" not in keymap I do not have a vnet0 configured anywhere, Why is it looking for it? Im at a loss. My VMs wont start because eof this error ------=_NextPart_000_000E_01CEEED3.64AF6710 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" = xmlns:o=3D"urn:schemas-microsoft-com:office:office" = xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" = xmlns=3D"http://www.w3.org/TR/REC-html40"><head><META = HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Dus-ascii"><meta name=3DGenerator content=3D"Microsoft Word 15 = (filtered medium)"><style></style></head><body lang=3DEN-US = link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p = class=3DMsoNormal>I get the following error when trying to start a new = VM<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal>VM CentOS is down. Exit message: internal error iframe = “vnet9” not in keymap<o:p></o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p = class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>I do not = have a vnet0 configured anywhere, Why is it looking for it? Im at a = loss. My VMs wont start because eof this = error<o:p></o:p></p></div></body></html> ------=_NextPart_000_000E_01CEEED3.64AF6710--

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