Open Stack

Hi guys,

Just for feedback and if somebody else has compute nodes on CentOS 7.0,
IceHouse and uses Ceph.



----------------------------------------------------------
What I did that worked for me:
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#Remove all QEMU and Livirt related RPMs. I had recompiled QEMU for RBD and
Libvirt that I had was not compatible with the patched QEMU.
#This removes openstack-nova-compute and so on, be careful...
yum remove -y `rpm -qa | grep qemu`
yum remove -y `rpm -qa | grep libvirt`

#I updated base and update centos repositories to gether from most up to
date versions. I have local repositories, so the commands should be
adapted...
sed -i "s|/centos7|/centos7.1|g" CentOS-Base7.repo
sed -i "s|/centos7update|/centos7.1update|g" CentOS-Base7.repo

#I had to do an update...
yum clean all
yum -y update #check problem only with ceph... I had some dependencies
problems with the ceph packages. But just Ceph

yum -y update --skip-broken #but ignoring them worked just fine

cd /etc/yum.repos.d/
#The update added all these repos on my yum.repos.d so I deleted (because I
use local repositories)
rm -f CentOS-Base.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo
CentOS-Sources.repo CentOS-Vault.repo

#Then I re-installed QEMU and Libvirt with CentOS7.1 repositories (base and
update)
yum -y install kvm qemu-kvm python-virtinst libvirt libvirt-python
virt-manager libguestfs-tools
service libvirtd start

#I use puppet to configure my host, so I just re-run it to re-install
nova-compute and re-configure
puppet agent -t #so replace this with your procedure for configure your
compute node

service openstack-nova-compute status #chek nova-compute is running...

#I had a console.log file in the instances directory that became owned by
root. So be sure to have everything owned by nova
chown -R nova:nova /var/lib/nova/

#Of course, at this moment all my instances were shutoff, so just restart
them...


source keystonerc* #credentials

vms=`nova list --all-tenants --minimal --host $host | grep -v ID | grep -v
"+-" | awk '{print $2}'` #guest vms ids on the host...

for vm in $vms ; do nova start $vm; done  #start vms...




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Hope this might be useful for someone...

Regards,
Cynthia Lopes do Sacramento

2015-06-03 2:35 GMT+02:00 Steve Gordon <sgordon at redhat.com>:

> ----- Original Message -----
> > From: "Erik McCormick" <emccormick at cirrusseven.com>
> > To: "Tim Bell" <Tim.Bell at cern.ch>
> >
> > On Tue, Jun 2, 2015 at 5:34 AM, Tim Bell <Tim.Bell at cern.ch> wrote:
> >
> > >  I had understood that CentOS 7.1 qemu-kvm has RBD support built-in. It
> > > was not there on 7.0 but http://tracker.ceph.com/issues/10480 implies
> it
> > > is in 7.1.
> > >
> > >
> > >
> > > You could check on the centos mailing lists to be sure.
> > >
> > >
> > >
> > > Tim
> > >
> > >
> > It's about time! Thanks for the pointer Tim.
> >
> > Cynthia, If for some reason it's not in the Centos ones yet, I've been
> > using the RHEV SRPMs and building the packages. You don't have to mess
> with
> > the spec or anything. Just run them through rpmbuild and push them out.
> >
> > http://ftp.redhat.com/pub/redhat/linux/enterprise/7Server/en/RHEV/SRPMS/
> >
> > -Erik
>
> FWIW equivalents builds for use with oVirt, RDO, etc. are being created
> under the auspices of the CentOS Virt SIG:
>
>
> http://cbs.centos.org/repos/virt7-kvm-common-testing/x86_64/os/Packages/
>
> Thanks,
>
> Steve
>
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>
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