[ovirt-users] Safe to upgrade HE hosts from GUI?
Roy Golan
rgolan at redhat.com
Mon Aug 1 05:28:35 EDT 2016
On 31 July 2016 at 18:26, Kenneth Bingham <w at qrk.us> wrote:
> Roy, would I do that in the Cluster tab, with New button, and then in host
> configurator select Hosted Engine sidebar? I noticed this option existed,
> but the RHEV docs and developer blogs I've been referencing specify the
> 'hosted-engine --deploy' method.
>
> on 4.0 this is the supported way of doing that. If fixes and prevents many
troubles and more than that, its simply doing that in 1 place.
The doc will be updated for that if not already. Also please refer to this
ovirt blog post [1]
[1]
http://www.ovirt.org/blog/2016/07/Manage-Your-Hosted-Engine-Hosts-Deployment/
> On Sun, Jul 31, 2016 at 3:04 AM Roy Golan <rgolan at redhat.com> wrote:
>
>> On 30 July 2016 at 02:48, Kenneth Bingham <w at qrk.us> wrote:
>>
>>> Aw crap. I did exactly the same thing and this could explain a lot of
>>> the issues I've been pulling out my beard over. Every time I did
>>> 'hosted-engine --deploy' on the RHEV-M|NODE host I entered the FQDN of
>>> *that* host, not the first host, as the origin of the Gluster FS volume
>>> because at the time I didn't realize that
>>> a. the manager would key deduplication on the URI of the volume
>>> b. that the volume would be mounted on FUSE, not NFS, and therefore no
>>> single point of entry is created by using the FQDN of the first host
>>> because the GFS client will persist connections with all peers
>>>
>>>
>> If you ever want to add an hosted engine host to your setup please do
>> that from UI and not from CLI. That will prevent all this confusion.
>>
>>
>>
>>> On Fri, Jul 29, 2016 at 6:08 AM Simone Tiraboschi <stirabos at redhat.com>
>>> wrote:
>>>
>>>> On Fri, Jul 29, 2016 at 11:35 AM, Wee Sritippho <wee.s at forest.go.th>
>>>> wrote:
>>>> > On 29/7/2559 15:50, Simone Tiraboschi wrote:
>>>> >>
>>>> >> On Fri, Jul 29, 2016 at 6:31 AM, Wee Sritippho <wee.s at forest.go.th>
>>>> wrote:
>>>> >>>
>>>> >>> On 28/7/2559 15:54, Simone Tiraboschi wrote:
>>>> >>>
>>>> >>> On Thu, Jul 28, 2016 at 10:41 AM, Wee Sritippho <wee.s at forest.go.th
>>>> >
>>>> >>> wrote:
>>>> >>>>
>>>> >>>> On 21/7/2559 16:53, Simone Tiraboschi wrote:
>>>> >>>>
>>>> >>>> On Thu, Jul 21, 2016 at 11:43 AM, Wee Sritippho <
>>>> wee.s at forest.go.th>
>>>> >>>> wrote:
>>>> >>>>
>>>> >>>>> Can I just follow
>>>> >>>>>
>>>> >>>>>
>>>> http://www.ovirt.org/documentation/how-to/hosted-engine/#upgrade-hosted-engine
>>>> >>>>> until step 3 and do everything else via GUI?
>>>> >>>>
>>>> >>>> Yes, absolutely.
>>>> >>>>
>>>> >>>>
>>>> >>>> Hi, I upgrade a host (host02) via GUI and now its score is 0.
>>>> Restarted
>>>> >>>> the services but the result is still the same. Kinda lost now. What
>>>> >>>> should I
>>>> >>>> do next?
>>>> >>>>
>>>> >>> Can you please attach ovirt-ha-agent logs?
>>>> >>>
>>>> >>>
>>>> >>> Yes, here are the logs:
>>>> >>> https://app.box.com/s/b4urjty8dsuj98n3ywygpk3oh5o7pbsh
>>>> >>
>>>> >> Thanks Wee,
>>>> >> your issue is here:
>>>> >> MainThread::ERROR::2016-07-17
>>>> >>
>>>> >>
>>>> 14:32:45,586::storage_server::143::ovirt_hosted_engine_ha.lib.storage_server.StorageServer::(_validate_pre_connected_path)
>>>> >> The hosted-engine storage domain is already mounted on
>>>> >>
>>>> >> '/rhev/data-center/mnt/glusterSD/host02.ovirt.forest.go.th:
>>>> _hosted__engine/639e689c-8493-479b-a6eb-cc92b6fc4cf4'
>>>> >> with a path that is not supported anymore: the right path should be
>>>> >>
>>>> >> '/rhev/data-center/mnt/glusterSD/host01.ovirt.forest.go.th:
>>>> _hosted__engine/639e689c-8493-479b-a6eb-cc92b6fc4cf4'.
>>>> >>
>>>> >> Did you manually tried to avoid the issue of a single entry point for
>>>> >> the gluster FS volume using host01.ovirt.forest.go.th:
>>>> _hosted__engine
>>>> >> and host02.ovirt.forest.go.th:_hosted__engine there?
>>>> >> This could cause a lot of confusion since the code could not detect
>>>> >> that the storage domain is the same and you can end with it mounted
>>>> >> twice into different locations and a lot of issues.
>>>> >> The correct solution of that issue was this one:
>>>> >> https://bugzilla.redhat.com/show_bug.cgi?id=1298693#c20
>>>> >>
>>>> >> Now, to have it fixed on your env you have to hack a bit.
>>>> >> First step, you have to edit
>>>> >> /etc/ovirt-hosted-engine/hosted-engine.conf on all your hosted-engine
>>>> >> hosts to ensure that the storage field always point to the same entry
>>>> >> point (host01 for instance)
>>>> >> Then on each host you can add something like:
>>>> >>
>>>> >> mnt_options=backupvolfile-server=host02.ovirt.forest.go.th:h
>>>> ost03.ovirt.forest.go.th
>>>> ,fetch-attempts=2,log-level=WARNING,log-file=/var/log/engine_domain.log
>>>> >>
>>>> >> Then check the representation of your storage connection in the table
>>>> >> storage_server_connections of the engine DB and make sure that
>>>> >> connection refers to the entry point you used in hosted-engine.conf
>>>> on
>>>> >> all your hosts, you have lastly to set the value of mount_options
>>>> also
>>>> >> here.
>>>> >
>>>> > Weird. The configuration in all hosts are already referring to host01.
>>>>
>>>> but for sure you have a connection pointing to host02 somewhere, did
>>>> you try to manually deploy from CLI connecting the gluster volume on
>>>> host02?
>>>>
>>>> > Also, in the storage_server_connections table:
>>>> >
>>>> > engine=> SELECT * FROM storage_server_connections;
>>>> > id | connection |
>>>> > user_name | password | iqn | port | portal | storage_type |
>>>> mount_options |
>>>> > vfs_type
>>>> > | nfs_version | nfs_timeo | nfs_retrans
>>>> >
>>>> --------------------------------------+------------------------------------------+-----------+----------+-----+------+--------+--------------+---------------+----------
>>>> > -+-------------+-----------+-------------
>>>> > bd78d299-c8ff-4251-8aab-432ce6443ae8 |
>>>> > host01.ovirt.forest.go.th:/hosted_engine | | | |
>>>> | 1
>>>> > | 7 | | glusterfs
>>>> > | | |
>>>> > (1 row)
>>>> >
>>>> >
>>>> >>
>>>> >> Please tune also the value of network.ping-timeout for your glusterFS
>>>> >> volume to avoid this:
>>>> >> https://bugzilla.redhat.com/show_bug.cgi?id=1319657#c17
>>>> >
>>>> >
>>>> > --
>>>> > Wee
>>>> >
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>
>>>
>>> _______________________________________________
>>> Users mailing list
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>>>
>>>
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