[Gluster-users] Active-Active HA ganesha-nfs configuration

[Herb Burnswell]

Thank you for the reply.

It is a bit concerning that you mention Gluster 3.8 and 3.9 set up of
NFS-Ganesha is not stable.

Regarding SMB, I am using SMB with CTDB and it works great.  However, I
would also like the ability to export NFS mounts as well.  I have read
about using CTDB for HA NFS.  Is that a viable/better solution?

Thanks,

HB

On Tue, Aug 7, 2018 at 12:51 AM, David Spisla <spisla80 at gmail.com> wrote:

> Hello Herbs,
> this setup is not as easy as it sounds. Here you can find additional setup
> instructions (look for the chapter of NFS-Ganesha HA):
> https://access.redhat.com/documentation/en-us/red_hat_
> gluster_storage/3.2/pdf/administration_guide/Red_Hat_Gluster_Storage-3.2-
> Administration_Guide-en-US.pdf
>
> Maybe you should use Gluster3.10 because the setup for 3.9 and 3.8 is not
> stable. With Gluster 3.10 I had a stable HA-Cluster.
> Also you should be aware of the fact, that since Gluster 3.11 this setup
> may not work because the Developers switching to storhaug:
> https://github.com/linux-ha-storage/storhaug/blob/master/README.md
>
> At the moment there is confusing in the coummunity about that issue.
> Storhaug is not complete and still under development.
> I don't know if my informations are up-to-date. Because of that fact I was
> switching to Samba (SMB). You can also have a HA Cluster with Samba/CTDB.
>
> Regards
> David Spisla
>
>
> 2018-08-07 4:40 GMT+02:00 Herb Burnswell <herbert.burnswell at gmail.com>:
>
>> All,
>>
>> I would like to set up HA NFS (Active/Active) on our 2 node gluster
>> environment using NFS-Ganesha.
>>
>> Specs:
>>
>> - RHEL 7
>> - glusterfs 3.8.15 built on Aug 16 2017 14:48:01
>>
>> I am following this process in this documentation, however it is
>> confusing to me:
>>
>> https://docs.gluster.org/en/v3/Administrator%20Guide/NFS-Gan
>> esha%20GlusterFS%20Integration/
>>
>> I already had Pacemaker/Corosync up and running on the our 2 node gluster
>> environment with fence resources on each.
>>
>> After the package installs and confirming "Pre-requisites to run
>> NFS-Ganesha", here is what I've done:
>>
>> 1. # gluster volume set all cluster.enable-shared-storage enable
>>
>> 2. Create /etc/ganesha/ganesha-ha.conf file (scrubbed.  I'm also assuming
>> that HA_NAME should be equal to the already created pacemaker cluster name):
>>
>> #
>> # HA File
>>
>> HA_NAME="clustername"
>> HA_CLUSTER_NODES="server1,server2"
>>
>> VIP_server1="10.19.3.66"
>> VIP_server2="10.19.3.67"
>>
>> 3. # gluster nfs-ganesha enable
>> Enabling NFS-Ganesha requires Gluster-NFS to be disabled across the
>> trusted pool. Do you still want to continue?
>>  (y/n) y
>> This will take a few minutes to complete. Please wait ..
>> nfs-ganesha : success
>>
>>
>> 4. # gluster volume set vol1 ganesha.enable on
>> volume set: success
>>
>> At this point I can see the export available:
>>
>> # showmount -e
>> Export list for server1:
>> /vol1 (everyone)
>>
>> And I can successfully mount the export from another server.
>>
>> However, nothing appears to be done regarding HA.  nfs-ganesha is not
>> started on server2 and no additional resources are created in pacemaker.
>>
>> Can anyone provide guidance as to what I may be doing incorrectly?
>>
>> Thanks,
>>
>> HB
>>
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>>
>
>
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