Re: [ovirt-users] [Users] Post-Install Engine VM Changes Feasible?

On Mon, Mar 17, 2014 at 8:01 PM, Sandro Bonazzola <sbonazzo(a)redhat.com&gt; wrote: > Il 15/03/2014 12:44, Giuseppe Ragusa ha scritto: >> Hi Joshua, >> >> ------------------------------------------------------------------------------------------------------------------------------------------------------ >> Date: Sat, 15 Mar 2014 02:32:59 -0400 >> From: josh(a)wrale.com >> To: users(a)ovirt.org >> Subject: [Users] Post-Install Engine VM Changes Feasible? >> >> Hi, >> >> I'm in the process of installing 3.4 RC(2?) on Fedora 19. I'm using hosted engine, introspective GlusterFS+keepalived+NFS ala [1], across six nodes. >> >> I have a layered networking topology ((V)LANs for public, internal, storage, compute and ipmi). I am comfortable doing the bridging for each >> interface myself via /etc/sysconfig/network-scripts/ifcfg-*. >> >> Here's my desired topology: http://www.asciiflow.com/#Draw6325992559863447154 >> >> Here's my keepalived setup: https://gist.github.com/josh-at-knoesis/98618a16418101225726 >> >> I'm writing a lot of documentation of the many steps I'm taking. I hope to eventually release a distributed introspective all-in-one (including >> distributed storage) guide. >> >> Looking at vm.conf.in <http://vm.conf.in>;, it looks like I'd by default end up with one interface on my engine, probably on my internal VLAN, as >> that's where I'd like the control traffic to flow. I definitely could do NAT, but I'd be most happy to see the engine have a presence on all of the >> LANs, if for no other reason than because I want to send backups directly over the storage VLAN. >> >> I'll cut to it: I believe I could successfully alter the vdsm template (vm.conf.in <http://vm.conf.in>) to give me the extra interfaces I require. >> It hit me, however, that I could just take the defaults for the initial install. Later, I think I'll be able to come back with virsh and make my >> changes to the gracefully disabled VM. Is this true? >> >> [1] http://www.andrewklau.com/ovirt-hosted-engine-with-3-4-0-nightly/ >> >> Thanks, >> Joshua >> >> >> I started from the same reference[1] and ended up "statically" modifying vm.conf.in before launching setup, like this: >> >> cp -a /usr/share/ovirt-hosted-engine-setup/templates/vm.conf.in /usr/share/ovirt-hosted-engine-setup/templates/vm.conf.in.orig >> cat << EOM > /usr/share/ovirt-hosted-engine-setup/templates/vm.conf.in >> vmId=@VM_UUID@ >> memSize=@MEM_SIZE@ >> display=@CONSOLE_TYPE@ >> devices={index:2,iface:ide,address:{ controller:0, target:0,unit:0, bus:1, >> type:drive},specParams:{},readonly:true,deviceId:@CDROM_UUID@,path:@CDROM@,device:cdrom,shared:false,type:disk@BOOT_CDROM@} >> devices={index:0,iface:virtio,format:raw,poolID:@SP_UUID@,volumeID:@VOL_UUID@,imageID:@IMG_UUID@,specParams:{},readonly:false,domainID:@SD_UUID@,optional:false,deviceId:@IMG_UUID@,address:{bus:0x00, >> slot:0x06, domain:0x0000, type:pci, function:0x0},device:disk,shared:exclusive,propagateErrors:off,type:disk@BOOT_DISK@} >> devices={device:scsi,model:virtio-scsi,type:controller} >> devices={index:4,nicModel:pv,macAddr:@MAC_ADDR@,linkActive:true,network:@BRIDGE@,filter:vdsm-no-mac-spoofing,specParams:{},deviceId:@NIC_UUID@,address:{bus:0x00, >> slot:0x03, domain:0x0000, type:pci, function:0x0},device:bridge,type:interface@BOOT_PXE@} >> devices={index:8,nicModel:pv,macAddr:02:16:3e:4f:c4:b0,linkActive:true,network:lan,filter:vdsm-no-mac-spoofing,specParams:{},address:{bus:0x00, >> slot:0x09, domain:0x0000, type:pci, function:0x0},device:bridge,type:interface@BOOT_PXE@} >> devices={device:console,specParams:{},type:console,deviceId:@CONSOLE_UUID@,alias:console0} >> vmName=@NAME@ >> spiceSecureChannels=smain,sdisplay,sinputs,scursor,splayback,srecord,ssmartcard,susbredir >> smp=@VCPUS@ >> cpuType=@CPU_TYPE@ >> emulatedMachine=@EMULATED_MACHINE@ >> EOM > > > Note that you should also be able to edit /etc/ovirt-hosted-engine/vm.conf after setup: > - put the system in global maintenance > - edit the vm.conf file on all the hosts running the hosted engine > - shutdown the vm: hosted-engine --vm-shutdown > - start again the vm: hosted-engine --vm-start > - exit global maintenance > > Giuseppe, Joshua: can you share your changes in a guide for Hosted engine users on ovirt.org wiki? > > So would you simply just add a new line under the original devices line? ie. devices={nicModel:pv,macAddr:00:16:3e:6d:34:78,linkActive:true,network:ovirtmgmt,filter:vdsm-no-mac-spoofing,specParams:{},deviceId:0c8a1710-casd-407a-94e8-5b09e55fa141,address:{bus:0x00, slot:0x03, domain:0x0000, type:pci, function:0x0},device:bridge,type:interface} Are there any good practices for getting the mac addr so it won't be possible to clash with ones vdsm would generate? I assume the same applies for deviceid? Did you also change the slot?

> >> >> I simply added a second nic (with a fixed MAC address from the locally-administered pool, since I didn't know how to auto-generate one) and added an >> index for nics too (mimicking the the storage devices setup already present). >> >> My network setup is much simpler than yours: ovirtmgmt bridge is on an isolated oVirt-management-only network without gateway, my actual LAN with >> gateway and Internet access (for package updates/installation) is connected to lan bridge and the SAN/migration LAN is a further (not bridged) 10 >> Gib/s isolated network for which I do not expect to need Engine/VMs reachability (so no third interface for Engine) since all actions should be >> performed from Engine but only through vdsm hosts (I use a "split-DNS" setup by means of carefully crafted hosts files on Engine and vdsm hosts) >> >> I can confirm that the engine vm gets created as expected and that network connectivity works. >> >> Unfortunately I cannot validate the whole design yet, since I'm still debugging HA-agent problems that prevent a reliable Engine/SD startup. >> >> Hope it helps. >> >> Greetings, >> Giuseppe >> >> >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> > > > -- > Sandro Bonazzola > Better technology. Faster innovation. Powered by community collaboration. > See how it works at redhat.com > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users