Re: [Users] Is there a way to force remove a host?

From: "Itamar Heim" <iheim(a)redhat.com&gt; To: "Jason Brooks" <jbrooks(a)redhat.com&gt; Cc: users(a)ovirt.org, "Dominic Kaiser" <dominic(a)bostonvineyard.org&gt;, "Shireesh Anjal" <sanjal(a)redhat.com&gt; Sent: Monday, September 24, 2012 3:07:24 PM Subject: Re: [Users] Is there a way to force remove a host? On 09/25/2012 12:03 AM, Jason Brooks wrote: > On Mon 24 Sep 2012 02:55:54 PM PDT, Itamar Heim wrote: >> On 09/24/2012 11:53 PM, Jason Brooks wrote: >>> On Mon 24 Sep 2012 01:24:44 PM PDT, Itamar Heim wrote: >>>> On 09/24/2012 08:49 PM, Dominic Kaiser wrote: >>>>> This conversation is fine but if I want to force remove no >>>>> matter >>>>> what I >>>>> should be able to from the GUI. The nodes are no longer >>>>> available I >>>>> want to get rid of them ovirt does not let me. I can delete >>>>> from >>>>> database but why not from the GUI? I am sure others may run >>>>> into this >>>>> problem as well. >>>> >>>> what happens to the status of the host when you right click on >>>> the >>>> host and specify you confirm it was shutdown? >>> >>> I'm having this same issue. Confirming the host is shut down >>> doesn't >>> make a difference. >>> >>> I'm seeing lots of "Failed to GlusterHostRemoveVDS, error = >>> Unexpected >>> exception" errors in my engine log that seem to correspond w/ the >>> failed >>> remove host attempts. >> >> is cluster defined as gluster as well? > > Yes, it is. that's a very important piece of information... is there a more detailed exception in the log on the error? can you uncheck gluster and try to remove it again?

Dominic - are you also using a cluster with gluster service enabled? > >> what is the status of the host after you confirm shutdown? >> any error on log on this specific command? > > I have two hosts I want to remove -- one, a failed add that never > completed, and the other, an F17 machine that I subsequently > updated to > F18. So neither of those hosts are actually connected to my engine. > Their status is either non-responsive or maintenance, if I > activate, > it's the former, if I set it to maintenance, it's the latter. I can > only > attempt to remove in maintenance mode, so that's where I have them. > > There don't appear to be any errors confirming manual reboot. > >> >> shireesh - not sure if relevant to this flow, but need to make >> sure >> removing a host from the engine isn't blocked on gluster needing >> to >> remove it from the gluster cluster if the host is not available >> any >> more, or last host in gluster cluster? >> >>> >>> >>>> >>>>> >>>>> Dominic >>>>> >>>>> On Sep 22, 2012 4:19 PM, "Eli Mesika" <emesika(a)redhat.com >>>>> <mailto:emesika@redhat.com>> wrote: >>>>> >>>>> >>>>> >>>>> ----- Original Message ----- >>>>> > From: "Douglas Landgraf" <dougsland(a)redhat.com >>>>> <mailto:dougsland@redhat.com>> >>>>> > To: "Dominic Kaiser" <dominic(a)bostonvineyard.org >>>>> <mailto:dominic@bostonvineyard.org>> >>>>> > Cc: "Eli Mesika" <emesika(a)redhat.com >>>>> <mailto:emesika@redhat.com>>, users(a)ovirt.org >>>>> <mailto:users@ovirt.org>, "Robert Middleswarth" >>>>> <robert(a)middleswarth.net <mailto:robert@middleswarth.net>> >>>>> > Sent: Friday, September 21, 2012 8:12:27 PM >>>>> > Subject: Re: [Users] Is there a way to force remove a >>>>> > host? >>>>> > >>>>> > Hi Dominic, >>>>> > >>>>> > On 09/20/2012 12:11 PM, Dominic Kaiser wrote: >>>>> > > Sorry I did not explain. >>>>> > > >>>>> > > I had tried to remove the host and had not luck >>>>> troubleshooting it. >>>>> > > I >>>>> > > then had removed it and used it for a storage unit >>>>> reinstalling >>>>> > > fedora >>>>> > > 17. I foolishly thought that I could just remove the >>>>> > > host >>>>> > > manually. >>>>> > > It physically is not there. (My fault I know) Is >>>>> > > there a >>>>> way that >>>>> > > you know of to remove a host brute force. >>>>> > > >>>>> > > dk >>>>> > >>>>> > Fell free to try the below script (not part of official >>>>> project) for >>>>> > brute force: >>>>> > >>>>> > (from the engine side) >>>>> > # yum install python-psycopg2 -y >>>>> > # wget >>>>> > >>>>> >>>>> https://raw.github.com/dougsland/misc-rhev/master/engine_force_remove_Hos... >>>>> >>>>> >>>>> >>>>> >>>>> > # (edit the file and change the db password) >>>>> > # python ./engine_force_remove_Host.py >>>>> >>>>> Hi , had looked in the Python script you had provided: >>>>> First, I must say that handling the database directly may >>>>> leave DB >>>>> in inconsistent state, therefore, if there is no other >>>>> option, the >>>>> database should be backed up prior to this operation. >>>>> In addition, I do not like the execution of the SQL >>>>> statements in >>>>> the script. >>>>> There is a SP called DeleteVds(v_vds_id UUID) and you >>>>> should use >>>>> that since it encapsulates all details. >>>>> For example, your script does not handle permission >>>>> clean-up as >>>>> the >>>>> SP does and therefore leaves garbage in the database. >>>>> In addition, a failure in your script may leave database in >>>>> inconsistent state while the SP is executed in one >>>>> transaction and >>>>> will leave DB consistent. >>>>> So, in short I would prefer in this case that the relevant >>>>> SP will >>>>> do the clean-up since this is the one that is used by the >>>>> code and >>>>> that insures (at least I hope so) , that all related >>>>> entities are >>>>> removed as well. >>>>> >>>>> >>>>> > >>>>> > Thanks >>>>> > >>>>> > -- >>>>> > Cheers >>>>> > Douglas >>>>> > >>>>> > >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Users mailing list >>>>> Users(a)ovirt.org >>>>> http://lists.ovirt.org/mailman/listinfo/users >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Users mailing list >>>> Users(a)ovirt.org >>>> http://lists.ovirt.org/mailman/listinfo/users >>> >>> >>> >>> -- >>> >>> @jasonbrooks >> >> > > > > -- > > @jasonbrooks