[Users] test day: using VM has host for vdsm

[Ryan Harper]

* Itamar Heim <iheim at redhat.com> [2012-01-18 13:46]:
> On 01/18/2012 07:26 PM, Ryan Harper wrote:
> >* Ryan Harper<ryanh at us.ibm.com>  [2012-01-18 06:59]:
> >>I've created some f16 VMs that contain both ovirt-engine and a few
> >>to run vdsm as nodes.  When I add in the VM host into the engine and it
> >>attempts to install vdsm (even though I've already installed vdsm) the
> >>install fails because the vdsm install script is checking to see if the
> >>host has virt capabilities; since I'm not running nested KVM, this
> >>fails.  Is there a way to work around this can enable a VM to be a host
> >>in oVirt?  I had heard in the past there was a way to create fake VMs
> >>when attempting to do ovirt-engine stress testing, wondering if that
> >>might be of help here.
> >
> >Now that I have one VM as a host in the UP state in ovirt-engine, let me
> >capture what I needed to get that to work:
> >
> >
> >On my F16-node, since I was following the test day instructions which
> >asked to install vdsm/vdsm-cli and this is already done by ovirt-engine
> >bootstrap.
> >
> >1) uninstall vdsm and vdsm-cli
> >     - ovirt-engine will push down a vdsm package during the bootstrap
> >     process
> >
> >2) disable selinux
> >     - edit /etc/sysconfig/selinux and set SELINUX=disabled
> >     - reboot
> >
> >3) ensure ssl=false and fake_kvm_support=true in /etc/vdsm/vdsm.conf
> >
> >4) restart vdsmd
> >
> >
> >On the ovirt-engine instanes
> >
> ># we have a gateway in the way so we're using ssh tunneling to access
> ># the ovirt-engine VM instance
> >
> >1) re-install ovirt-engine and don't use localhost as the hostname since
> >this value is passed to the host you install vdsm on and it will fail to
> >push the bootstrap script down.  This means that after you setup your
> >tunnel, to get to the admin interface, you need to manually enter:
> >
> >     http://localhost:8080/webadmin
> >
> >2) edit 
> >/usr/share/ovirt-engine/engine.ear/components.war/vds/vds_bootstrap.py
> >and comment out lines 836->839, like this.
> >
> >#    if not oDeploy.virtExplorer(random_num):
> >#        logging.error('virtExplorer test failed')
> >#        return False
> >
> >3) some misc stuff (not sure if it is needed, but looks harmless enough)
> >
> >    mkdir  /var/lock/ovirt-engine/
> >    chown  jboss-as:jboss-as -R /var/lock/ovirt-engine
> >    restorecon -Fvv  /var/lock/ovirt-engine
> >
> >4) update jboss configuration to not use ssl
> >
> >psql -U postgres engine -c "update vdc_options set option_value='false' 
> >where
> >+option_name='UseSecureConnectionWithServers' and version='general';"
> >
> >5) restart jboss
> >
> >service restart jboss-as
> >
> >>
> >>Also, are their vdsm rpms built for RHEL6.x available?
> 
> you can set InstallVds to false in engine config, which will only add 

what does this command look like?  I plan to update the installing vdsm
wiki page.

> the host without doing any communication to it.
> together with disabling ssl/secure connections should be easy enough to use.
> you would need to install vdsm manually and configure the ovirtmgmt bridge.

That sounds good; it'd probably be good to mention that on the
installing VDSM page which walks folks through installing vdsm.



-- 
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
ryanh at us.ibm.com