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

[Ryan Harper]

* Ryan Harper <ryanh at us.ibm.com> [2012-01-18 11:27]:
> * 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';"
> 

forgot this one:

 # when using fake_kvm_support
 engine-config -s MaxVdsMemOverCommit=2000;

> 5) restart jboss
> 
> service restart jboss-as
> 
> > 
> > Also, are their vdsm rpms built for RHEL6.x available?
> > 
> > Thanks!
> > 
> > -- 
> > Ryan Harper
> > Software Engineer; Linux Technology Center
> > IBM Corp., Austin, Tx
> > ryanh at us.ibm.com
> 
> -- 
> Ryan Harper
> Software Engineer; Linux Technology Center
> IBM Corp., Austin, Tx
> ryanh at us.ibm.com

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