[Gluster-users] Issues with Geo-replication (GlusterFS 6.3 on Ubuntu 18.04)
Alexander Iliev
ailiev+gluster at mamul.org
Sun Sep 8 14:50:46 UTC 2019
Hi all,
Sunny, thank you for the update.
I have applied the patch locally on my slave system and now the
mountbroker setup is successful.
I am facing another issue though - when I try to create a replication
session between the two sites I am getting:
# gluster volume geo-replication store1
glustergeorep@<slave-host>::store1 create push-pem
Error : Request timed out
geo-replication command failed
It is still unclear to me if my setup is expected to work at all.
Reading the geo-replication documentation at [1] I see this paragraph:
> A password-less SSH connection is also required for gsyncd between
every node in the master to every node in the slave. The gluster
system:: execute gsec_create command creates secret-pem files on all the
nodes in the master, and is used to implement the password-less SSH
connection. The push-pem option in the geo-replication create command
pushes these keys to all the nodes in the slave.
It is not clear to me whether connectivity from each master node to each
slave node is a requirement in terms of networking. In my setup the
slave nodes form the Gluster pool over a private network which is not
reachable from the master site.
Any ideas how to proceed from here will be greatly appreciated.
Thanks!
Links:
[1]
https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3/html/administration_guide/sect-preparing_to_deploy_geo-replication
Best regards,
--
alexander iliev
On 9/3/19 2:50 PM, Sunny Kumar wrote:
> Thank you for the explanation Kaleb.
>
> Alexander,
>
> This fix will be available with next release for all supported versions.
>
> /sunny
>
> On Mon, Sep 2, 2019 at 6:47 PM Kaleb Keithley <kkeithle at redhat.com> wrote:
>>
>> Fixes on master (before or after the release-7 branch was taken) almost certainly warrant a backport IMO to at least release-6, and probably release-5 as well.
>>
>> We used to have a "tracker" BZ for each minor release (e.g. 6.6) to keep track of backports by cloning the original BZ and changing the Version, and adding that BZ to the tracker. I'm not sure what happened to that practice. The last ones I can find are for 6.3 and 5.7; https://bugzilla.redhat.com/show_bug.cgi?id=glusterfs-6.3 and https://bugzilla.redhat.com/show_bug.cgi?id=glusterfs-5.7
>>
>> It isn't enough to just backport recent fixes on master to release-7. We are supposedly continuing to maintain release-6 and release-5 after release-7 GAs. If that has changed, I haven't seen an announcement to that effect. I don't know why our developers don't automatically backport to all the actively maintained releases.
>>
>> Even if there isn't a tracker BZ, you can always create a backport BZ by cloning the original BZ and change the release to 6. That'd be a good place to start.
>>
>> On Sun, Sep 1, 2019 at 8:45 AM Alexander Iliev <ailiev+gluster at mamul.org> wrote:
>>>
>>> Hi Strahil,
>>>
>>> Yes, this might be right, but I would still expect fixes like this to be
>>> released for all supported major versions (which should include 6.) At
>>> least that's how I understand https://www.gluster.org/release-schedule/.
>>>
>>> Anyway, let's wait for Sunny to clarify.
>>>
>>> Best regards,
>>> alexander iliev
>>>
>>> On 9/1/19 2:07 PM, Strahil Nikolov wrote:
>>>> Hi Alex,
>>>>
>>>> I'm not very deep into bugzilla stuff, but for me NEXTRELEASE means v7.
>>>>
>>>> Sunny,
>>>> Am I understanding it correctly ?
>>>>
>>>> Best Regards,
>>>> Strahil Nikolov
>>>>
>>>> В неделя, 1 септември 2019 г., 14:27:32 ч. Гринуич+3, Alexander Iliev
>>>> <ailiev+gluster at mamul.org> написа:
>>>>
>>>>
>>>> Hi Sunny,
>>>>
>>>> Thank you for the quick response.
>>>>
>>>> It's not clear to me however if the fix has been already released or not.
>>>>
>>>> The bug status is CLOSED NEXTRELEASE and according to [1] the
>>>> NEXTRELEASE resolution means that the fix will be included in the next
>>>> supported release. The bug is logged against the mainline version
>>>> though, so I'm not sure what this means exactly.
>>>>
>>>> From the 6.4[2] and 6.5[3] release notes it seems it hasn't been
>>>> released yet.
>>>>
>>>> Ideally I would not like to patch my systems locally, so if you have an
>>>> ETA on when this will be out officially I would really appreciate it.
>>>>
>>>> Links:
>>>> [1] https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_status
>>>> [2] https://docs.gluster.org/en/latest/release-notes/6.4/
>>>> [3] https://docs.gluster.org/en/latest/release-notes/6.5/
>>>>
>>>> Thank you!
>>>>
>>>> Best regards,
>>>>
>>>> alexander iliev
>>>>
>>>> On 8/30/19 9:22 AM, Sunny Kumar wrote:
>>>> > Hi Alexander,
>>>> >
>>>> > Thanks for pointing that out!
>>>> >
>>>> > But this issue is fixed now you can see below link for bz-link and patch.
>>>> >
>>>> > BZ - https://bugzilla.redhat.com/show_bug.cgi?id=1709248
>>>> >
>>>> > Patch - https://review.gluster.org/#/c/glusterfs/+/22716/
>>>> >
>>>> > Hope this helps.
>>>> >
>>>> > /sunny
>>>> >
>>>> > On Fri, Aug 30, 2019 at 2:30 AM Alexander Iliev
>>>> > <ailiev+gluster at mamul.org <mailto:gluster at mamul.org>> wrote:
>>>> >>
>>>> >> Hello dear GlusterFS users list,
>>>> >>
>>>> >> I have been trying to set up geo-replication between two clusters for
>>>> >> some time now. The desired state is (Cluster #1) being replicated to
>>>> >> (Cluster #2).
>>>> >>
>>>> >> Here are some details about the setup:
>>>> >>
>>>> >> Cluster #1: three nodes connected via a local network (172.31.35.0/24),
>>>> >> one replicated (3 replica) volume.
>>>> >>
>>>> >> Cluster #2: three nodes connected via a local network (172.31.36.0/24),
>>>> >> one replicated (3 replica) volume.
>>>> >>
>>>> >> The two clusters are connected to the Internet via separate network
>>>> >> adapters.
>>>> >>
>>>> >> Only SSH (port 22) is open on cluster #2 nodes' adapters connected to
>>>> >> the Internet.
>>>> >>
>>>> >> All nodes are running Ubuntu 18.04 and GlusterFS 6.3 installed from [1].
>>>> >>
>>>> >> The first time I followed the guide[2] everything went fine up until I
>>>> >> reached the "Create the session" step. That was like a month ago, then I
>>>> >> had to temporarily stop working in this and now I am coming back to it.
>>>> >>
>>>> >> Currently, if I try to see the mountbroker status I get the following:
>>>> >>
>>>> >>> # gluster-mountbroker status
>>>> >>> Traceback (most recent call last):
>>>> >>> File "/usr/sbin/gluster-mountbroker", line 396, in <module>
>>>> >>> runcli()
>>>> >>> File
>>>> "/usr/lib/python3/dist-packages/gluster/cliutils/cliutils.py", line 225,
>>>> in runcli
>>>> >>> cls.run(args)
>>>> >>> File "/usr/sbin/gluster-mountbroker", line 275, in run
>>>> >>> out = execute_in_peers("node-status")
>>>> >>> File "/usr/lib/python3/dist-packages/gluster/cliutils/cliutils.py",
>>>> >> line 127, in execute_in_peers
>>>> >>> raise GlusterCmdException((rc, out, err, " ".join(cmd)))
>>>> >>> gluster.cliutils.cliutils.GlusterCmdException: (1, '', 'Unable to
>>>> >> end. Error : Success\n', 'gluster system:: execute mountbroker.py
>>>> >> node-status')
>>>> >>
>>>> >> And in /var/log/gluster/glusterd.log I have:
>>>> >>
>>>> >>> [2019-08-10 15:24:21.418834] E [MSGID: 106336]
>>>> >> [glusterd-geo-rep.c:5413:glusterd_op_sys_exec] 0-management: Unable to
>>>> >> end. Error : Success
>>>> >>> [2019-08-10 15:24:21.418908] E [MSGID: 106122]
>>>> >> [glusterd-syncop.c:1445:gd_commit_op_phase] 0-management: Commit of
>>>> >> operation 'Volume Execute system commands' failed on localhost : Unable
>>>> >> to end. Error : Success
>>>> >>
>>>> >> So, I have two questions right now:
>>>> >>
>>>> >> 1) Is there anything wrong with my setup (networking, open ports, etc.)?
>>>> >> Is it expected to work with this setup or should I redo it in a
>>>> >> different way?
>>>> >> 2) How can I troubleshoot the current status of my setup? Can I find out
>>>> >> what's missing/wrong and continue from there or should I just start from
>>>> >> scratch?
>>>> >>
>>>> >> Links:
>>>> >> [1] http://ppa.launchpad.net/gluster/glusterfs-6/ubuntu
>>>> >> [2]
>>>> >>
>>>> https://docs.gluster.org/en/latest/Administrator%20Guide/Geo%20Replication/
>>>> >>
>>>> >> Thank you!
>>>> >>
>>>> >> Best regards,
>>>> >> --
>>>> >> alexander iliev
>>>> >> _______________________________________________
>>>> >> Gluster-users mailing list
>>>> >> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>>>> >> https://lists.gluster.org/mailman/listinfo/gluster-users
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