Re: [ovirt-users] Hosting an oVirt test cluster on single machine running Fedora 25 with nested virtualization enabled.

May I suggest you look at Lago[1] and ovirt-system-tests[2] to set up everything you need? I use it on a daily basis on F25. HTH, Y. [1] http://lago.readthedocs.io/en/latest/README.html [2] http://ovirt-system-tests.readthedocs.io/en/latest/ On Mon, Feb 27, 2017 at 10:43 AM john <vorpal(a)internode.on.net&gt; wrote: > Hi everybody, > > I'm having a nightmarish time trying to test oVirt and RHEV on my > main machine which i just upgraded to Fedora 25 (before realising > oVirt is still on F24). Nevertheless, it seems to me I shouldn't > have a problem if i just use F24/RHEV/oVirt nodes running under my > F25 machine. > > The F25 physical host is a pretty powerful machine, 8 (HT) cores, > SSD storage, 16 GB ram (bit light on RAM but this should be just > sufficient to run the engine & host, and say one test host) > > Main problem is that i just cannot seem to add a new host to this > cluster. > > I am using the F25 physical host to export NFS4 storage (on SSD), > for the oVirt cluster. > > So currently, I have, all on one physical machine: > > 1) ovirt-engine-host vm - this is the F24 host which i ran > hosted-engine --deploy in. So, if the physical host is layer 0 > (L0), this is L1. > > VM has been given 3 CPUs, 6GB of RAM > > 2) ovirt-engine vm- this is the vm inside ovirt-engine-host, and > this vm is the main ovirt admin engine/appliance. The image for > this appliance was obtained from: > ovirt-engine-appliance-4.1-20170201.1.fc24.noarch.rpm So this vm is > at L2. > > According to the ovirt Manager web admin page, this is running: > oVirt Engine Version:4.1.0.3-1.el7.centos > > When i ran the hosted-engine --deploy, I specified 2 CPUs, 4GB of > RAM, however, when i look at this host in the management webpqage, > it reports 3 CPU, and 6GB of RAM, so the hosted engine deploy > script seems to have ignored my wishes and given this vm the full > resources of its host vm, which is a little annoying but shouldnt > be causing a problem at this stage. > > Basically, this seems to be working. I can login to the oVirt > Manager webpage and see my whole datacenter, storage, cluster, etc. > > I've been able to add a data domain, and an iso storage domain, and > when i did this, the new data storage domain became the Master, and > the hosted_storage domain (holding my ovirt-engine host) appeared > out of nowhere in the UI. So i now have 3 storage domains - the > hosted_engine, the master, and iso storage. > > > So anyway, this is where the problems start. No matter what I try, I > can't seem to add a host to this cluster, which seems to be working > fine otherwise. > > On all my F24 hosts Ive installed python2-dnf which is required by > oVirt on F24, installed nfs-utils so it can mount nfs shares, > enabled ovirt repository, setup static IP address, > tweaked /etc/hosts so all my hosts can see each other without > relying on the physical KVM host's DNS. > > I have tried: > > 1) create a new F24 VM under my physical host, so, at L1. I called > this ovirt-host-01. I have enabled CPU host-passthrough in KVM so > this VM can also run nested VMs, which is of course, the main > objective. I've given this VM 3 CPUs, and 6GB of RAM. Go to > Management webpage and try to add this as a new host. > > It ALMOST succeeds, but at the end it fails to mount my > hosted_storage domain. It correctly mounts the main master data > domain, and the iso domain, but fails to mount the hosted_storage > domain. I can mount this domain manually, and I just can't work out > why this fails, it's incredibly frustrating. > > 2) create a new host using the latest oVirt node iso: > ovirt-node-ng-installer-ovirt-4.0-2017011712.iso > > node has 25 GB disk,3 CPUs, 6GB of RAM. Cockpit admin webpage > reports it is an "oVirt Node 4.0.6.1" > > The node seems to be running fine, but i can't seem to add it to my > main cluster. The VDSM service is failing because it's not a member > of any domain. The main "System" tab in CockPit lists all the > details, but for Domain, it says: "Join Domain". Nowhere in this > CockPit admin webpage does there appear to be any way to actually > specify the domain to join. > > So, I go to my main engine Admin page, and try to add this node as a > new host. It attempts to do so, but fails, after trying to trying to > install the package collectd, which is in epel. So i enable epel, > even though I'm sure something must be drastically wrong here, > because this oVirt node should have everything it needs already > installed on it. Trying to reinstall again, it fails with the exact > same error in the deployment log, saying collectd cannot be found > even though it is available from epel & epel repo is enabled. > > > Summary: > > This is incredibly frustrating. Why is it so hard to add a host to > an oVirt cluster. This should be child's play. What is going on? > > I have seen another email to this list saying you have to run hosted > engine deploy on bare metal (L0), so the engine vm is at L1, or > the HA features of vdsm are pointless, but I'm not clear why that > is, I was hoping i should be able to get some sort of power > management setup eventually, KVM & virsh should be able to provide > full power management of the hosts even if i had to kludge together > a few scripts myself. > > Plus that still shouldn't prevent me from setting up this test > cluster surely. I know i haven't configured power management > properly on the hosts i'm adding, but, so what, they should at > least work for testing purposes. > > If we set aside the power management issues for now, I can't see why > there should be issues setting up this whole cluster under KVM on a > single physical host. The nested virtualisation is working > perfectly. > > Apologies for the long email, but i thought it best to get most of > the details out there, so ppl won't have to go back & forth asking > questions just to see what i am trying to do. Any questions re > details i've left out though, pls feel free to ask. > > If anyone can offer any halp or advice it'd be greatly appreciated, > ta and cheers! > > J > > > > > > > > > > > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users >