[ovirt-users] Master Doamin - Ovirt 3.6 - hoted engine

[Dariusz Kryszak]

OK. I've made it!!!!

procedure:
1. backup hosted engine config 
engine-backup --mode=backup --file=engine_`date +%Y%m%d_%H%M%S`.bck -
-log=engine_`date +%Y%m%d_%H%M%S`.log


2. on the hypervisor 
hosted-engine --set-maintenance --mode=global



3. on the management host 
systemctl stop ovirt-engine.service

4. on the management host 

su - postgres
psql
\c engine

--- tu have to find maualy valuses but master always has
storage_domain_type=0




UPDATE storage_domain_static SET storage_domain_type=(select
storage_domain_type from storage_domain_static where
storage_name='hosted_storage') WHERE storage_name='DS_MAIN'
UPDATE storage_domain_static SET _update_date=(select _update_date from
storage_domain_static where storage_name='hosted_storage') WHERE
storage_name='DS_MAIN'

UPDATE storage_domain_static SET storage_domain_type=1 WHERE
storage_name='hosted_storage';
UPDATE storage_domain_static SET _update_date=null WHERE
storage_name='hosted_storage';

5. on the management host 
systemctl start ovirt-engine.service

6. on the hypervisor 
hosted-engine --set-maintenance --mode=none

end.

enjoy :-)

On Fri, 2016-02-26 at 09:17 +0100, Simone Tiraboschi wrote:
> 
> 
> On Thu, Feb 25, 2016 at 10:03 PM, Dariusz Kryszak <
> dariusz.kryszak at gmail.com> wrote:
> > 
> > 
> > 
> > 
> > On Tue, 2016-02-23 at 17:13 +0100, Simone Tiraboschi wrote:
> > >
> > >
> > > On Tue, Feb 23, 2016 at 4:19 PM, Dariusz Kryszak <
> > > dariusz.kryszak at gmail.com> wrote:
> > > > Hi folks,
> > > > I have a question about master domain when I'm using hosted
> > engine
> > > > deployment.
> > > > At the beginning I've made deployment on NUC (small home
> > > > installation) with hosted engine on the nfs share from NUC
> > host.
> > > > I've configured FS gluster on the same machine and used it for
> > > > master domain and iso domain. Lets say All-in-ONE.
> > > > After reboot happened something strange. Log says that master
> > > > domain is not available and has to become on the
> > hosted_storage.
> > > > This is not ok in my opinion. I know that behavior because
> > master
> > > > doamin is not available, has been migrated to other shareable
> > (in
> > > > this case hosted_domain is nfs ).
> > > > Do you thing, that should be locked in this particular case
> > means
> > > > when available is only hosted_storage? Right now it is not
> > possible
> > > > to change this situation because hosted engine resides on the
> > > > hosted_storage. I Can't migrate it.
> > > >
> > > >
> > > It could happen only after the hosted-engine storage domain got
> > > imported by the engine but to do that you need an additional
> > storage
> > > domain which will become the master storage domain.
> > > In the past we had a bug that let you remove the last regular
> > storage
> > > domain and it the case the hosted-engine would become the master
> > > storage domain and as you pointed out that was an issue.
> > > https://bugzilla.redhat.com/show_bug.cgi?id=1298697
> > >
> > > Now it should be fixed. If it just happened again just because
> > you
> > > gluster regular storage domain wasn't available is not really
> > fixed.
> > > Adding Roy here.
> > > Dariusz, which release are you using?
> > 
> > Regarding to the ovirt version.
> > 1. ovirt manager
> > ovirt-engine-setup - oVirt Engine Version: 3.6.2.6-1.el7.centos
> The patch that should address that issue is here:
> https://gerrit.ovirt.org/#/c/53208/
> 
> But you'll find it only in 3.6.3; it wasn't available at 3.6.2.6
> time.
> 
> Recovering from the condition you reached is possible but it requires
> a few manual actions.
> If your instance was almost empty redeploying is also an (probably
> easier) option.
> 
>  
> >  # uname -a
> > Linux ovirtm.stylenet 3.10.0-327.10.1.el7.x86_64 #1 SMP Tue Feb 16
> > 17:03:50 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
> > cat /etc/redhat-release
> > CentOS Linux release 7.2.1511 (Core)
> > 
> > 
> > 
> > 2. hypervisor
> > 
> > uname -a
> > Linux ovirth1.stylenet 3.10.0-327.10.1.el7.x86_64 #1 SMP Tue Feb 16
> > 17:03:50 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
> > cat /etc/redhat-release
> > CentOS Linux release 7.2.1511 (Core)
> > 
> > rpm -qa|grep 'hosted\|vdsm'
> > vdsm-cli-4.17.18-1.el7.noarch
> > ovirt-hosted-engine-ha-1.3.3.7-1.el7.centos.noarch
> > vdsm-xmlrpc-4.17.18-1.el7.noarch
> > vdsm-jsonrpc-4.17.18-1.el7.noarch
> > vdsm-4.17.18-1.el7.noarch
> > vdsm-python-4.17.18-1.el7.noarch
> > vdsm-yajsonrpc-4.17.18-1.el7.noarch
> > vdsm-hook-vmfex-dev-4.17.18-1.el7.noarch
> > ovirt-hosted-engine-setup-1.3.2.3-1.el7.centos.noarch
> > vdsm-infra-4.17.18-1.el7.noarch
> >