[one-users] How to fix hosts with deleted /var/tmp/one files

[Jaime Melis]

By the way, I'm considering the option of marking the 'tmpwatch' package as
a conflict with opennebula-node-kvm. Do you think this is a good idea?

On Mon, Nov 17, 2014 at 11:14 AM, Jaime Melis <jmelis at opennebula.org> wrote:

> Hi Steven,
>
> In several occasions in the past I have forgotten to
>> tell my tmpwatch utility not to delete files out of /var/tmp/one
>> and thus I have seen most of the remotes get deleted off of
>> my cloud hosts, but opennebula 4.8 doesn't report any problems.
>
>
> You are right, when we decided to set /var/tmp/one as the default remotes
> directory we weren't aware of the tmpwatch utility.
>
> However, in our case, when we remove /var/tmp/one the driver resends the
> probes automatically:
>
> Mon Nov 17 11:07:04 2014 [Z0][InM][D]: Monitoring host localhost (0)
> Mon Nov 17 11:07:05 2014 [Z0][InM][I]: Command execution fail: 'if [ -x
> "/var/tmp/one/im/run_probes" ]; then /var/tmp/one/im/run_probes kvm
> /var/lib/one//datastores 4124 20 0 localhost; else
>      exit 42; fi'
> Mon Nov 17 11:07:05 2014 [Z0][InM][I]: ExitCode: 42
> Mon Nov 17 11:07:05 2014 [Z0][InM][I]: Remote worker node files not found
> Mon Nov 17 11:07:05 2014 [Z0][InM][I]: Updating remotes
> Mon Nov 17 11:07:10 2014 [Z0][InM][D]: Host localhost (0) successfully
> monitored.
>
> Can you find something similar to that in your log file? If you are not
> seeing something like that there might be a bug somewhere or a
> configuration problem. It would be great to narrow it down.
>
>
>>
> I try to fix the remotes by doing "onehost sync" and nothing happens.
>> I try to disable/enable the host and nothing happens there either.
>> The only thing that seems to revive it is if I actually
>> onehost delete/ onehost create.
>>
>
> Right, you should do "onehost sync --force"
>
> Take a look at this section:
>
> http://docs.opennebula.org/4.10/administration/hosts_and_clusters/host_guide.html#sync
>
> In a nutshell you can version the probes and update specific
> nodes/cluster. If there is no version change onehost sync will not do
> anything unless --force is used.
>
> IS it possible for the remotes to add an integrity check?
>> They should not be reporting the host is "on" if the datastores
>> directory of remotes has been totally deleted.
>>
>
> The automatic redeployment of probes is our way to deal with this. Let's
> see if we can see why it's no working for you.
>
>
>> Also is it possible to configure the directory other than the
>> default /var/tmp/one?
>
>
> Yes:
>
> /etc/one/oned.conf:71:SCRIPTS_REMOTE_DIR=/var/tmp/one
>
>
>> Finally is it possible to
>> redistribute the remotes short of a onehost delete / onehost create?
>>
>
> With the --force flag.
>
> Cheers,
> Jaime
>
>
> --
> Jaime Melis
> Project Engineer
> OpenNebula - Flexible Enterprise Cloud Made Simple
> www.OpenNebula.org | jmelis at opennebula.org
>



-- 
Jaime Melis
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | jmelis at opennebula.org
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