[Gluster-users] Geo-replication configuration issue

Saravanakumar Arumugam sarumuga at redhat.com
Mon Jul 25 05:03:33 UTC 2016 

On 07/25/2016 10:29 AM, Saravanakumar Arumugam wrote:
> Hi,
>
> 1.
> Can you check   /root/.ssh/authorized_keys (in master host) ?

Sorry..typo , this is in slave host (ks4 in your case)

> It should contain only entries starting with "command=" .
> If there is any duplicate entry without "command=" , delete the same.
> and check the geo-rep status again.
>
>
> 2.
> This is to confirm ssh connection between master and slave:
> When do run the following, you should get gsynd prompt(from master to 
> slave).
>
> ssh -i /var/lib/glusterd/geo-replication/secret.pem root at slave
>
Slave is ks4 in your case.

> 3.
> check your firewall settings
>
>
> Thanks,
> Saravana
>
> On 07/25/2016 02:24 AM, Alexandre Besnard wrote:
>> Anybody, any clue ?
>>
>>> On 20 Jul 2016, at 01:59, Alexandre Besnard 
>>> <besnard.alexandre at gmail.com <mailto:besnard.alexandre at gmail.com>> 
>>> wrote:
>>>
>>> Hello
>>>
>>> I deleted the content of /root/.ssh/authorized_keys on the slave (ks4)
>>>
>>> Then I configured passwordless authentication from the host (ks16):
>>>
>>> /ssh-copy-id root at ks4/
>>> /
>>> /
>>> Also did from the host:
>>>
>>> /gluster system:: execute gsec_create/
>>>
>>> which created a file 
>>> in /var/lib/glusterd/geo-replication/common_secret.pem.pub
>>>
>>> Then created the geo-replicated volume successfully:
>>>
>>> /gluster volume geo-replication backupvol ks4::backupvol create 
>>> push-pem force/
>>>
>>> but still getting the same errors in the log after starting the volume:
>>>
>>> /[2016-07-19 23:52:14.900583] I [monitor(monitor):266:monitor] 
>>> Monitor: ------------------------------------------------------------/
>>> /[2016-07-19 23:52:14.900752] I [monitor(monitor):267:monitor] 
>>> Monitor: starting gsyncd worker/
>>> /[2016-07-19 23:52:14.958281] I 
>>> [gsyncd(/gluster/backupvol):710:main_i] <top>: syncing: 
>>> gluster://localhost:backupvol -> 
>>> ssh://root@ks4:gluster://localhost:backupvol/
>>> /[2016-07-19 23:52:14.958520] I [changelogagent(agent):73:__init__] 
>>> ChangelogAgent: Agent listining.../
>>> /[2016-07-19 23:52:15.81407] E 
>>> [syncdutils(/gluster/backupvol):252:log_raise_exception] <top>: 
>>> connection to peer is broken/
>>> /[2016-07-19 23:52:15.81645] E 
>>> [resource(/gluster/backupvol):226:errlog] Popen: command "ssh 
>>> -oPasswordAuthentication=no -oStrictHostKeyChecking=no -i 
>>> */var/lib/glusterd/geo-replication/secret.pem *-p 22 
>>> -oControlMaster=auto -S 
>>> /tmp/gsyncd-aux-ssh-Aux8JK/b63292d563144e7818235d683516731d.sock 
>>> root at ks4 /nonexistent/gsyncd --session-owner 
>>> 3281242a-ab45-4a0d-99e5-2965b4ac5840 -N --listen --timeout 120 
>>> gluster://localhost:backupvol" returned with 255, saying:/
>>> /[2016-07-19 23:52:15.81733] E 
>>> [resource(/gluster/backupvol):230:logerr] Popen: ssh> 
>>> key_load_public: invalid format/
>>> /[2016-07-19 23:52:15.81804] E 
>>> [resource(/gluster/backupvol):230:logerr] Popen: ssh> Permission 
>>> denied (publickey,password)./
>>> /[2016-07-19 23:52:15.81947] I 
>>> [syncdutils(/gluster/backupvol):220:finalize] <top>: exiting./
>>> /[2016-07-19 23:52:15.82798] I [repce(agent):92:service_loop] 
>>> RepceServer: terminating on reaching EOF./
>>> /[2016-07-19 23:52:15.82946] I [syncdutils(agent):220:finalize] 
>>> <top>: exiting./
>>> /[2016-07-19 23:52:15.82858] I [monitor(monitor):333:monitor] 
>>> Monitor: worker(/gluster/backupvol) died before establishing connection/
>>>
>>>
>
>>> Any thoughts ?
>>>
>>>
>>>> On 19 Jul 2016, at 06:33, Aravinda <avishwan at redhat.com 
>>>> <mailto:avishwan at redhat.com>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> Looks like Master Pem keys are not copied to Slave nodes properly, 
>>>> Please cleanup /root/.ssh/authorized_keys in Slave nodes and run 
>>>> Geo-rep create force again.
>>>>
>>>> gluster volume geo-replication <MASTERVOL> <SLAVEHOST>::<SLAVEVOL> 
>>>> create push-pem force
>>>>
>>>> Do you observe any errors related to hook scripts in glusterd log file?
>>>>
>>>> regards
>>>> Aravinda
>>>>
>>>> On 07/18/2016 10:11 PM, Alexandre Besnard wrote:
>>>>> Hello
>>>>>
>>>>> On a fresh Gluster 3.8 install, I am not able to configure a 
>>>>> geo-replicated volume. Everything works fine up to starting of the 
>>>>> volume however Gluster reports a faulty status.
>>>>>
>>>>> When looking at the logs (gluster_error):
>>>>>
>>>>> [2016-07-18 16:30:04.371686] I [cli.c:730:main] 0-cli: Started 
>>>>> running gluster with version 3.8.0
>>>>> [2016-07-18 16:30:04.435854] I [MSGID: 101190] 
>>>>> [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started 
>>>>> thread with index 1
>>>>> [2016-07-18 16:30:04.435921] I 
>>>>> [socket.c:2468:socket_event_handler] 0-transport: disconnecting now
>>>>> [2016-07-18 16:30:04.997986] I [input.c:31:cli_batch] 0-: Exiting 
>>>>> with: 0
>>>>>
>>>>>
>>>>>
>>>>> From the geo-replicated logs, it seems I have a SSH configuration 
>>>>> issue:
>>>>>
>>>>> 2016-07-18 16:35:28.293524] I [monitor(monitor):266:monitor] 
>>>>> Monitor: ------------------------------------------------------------
>>>>> [2016-07-18 16:35:28.293740] I [monitor(monitor):267:monitor] 
>>>>> Monitor: starting gsyncd worker
>>>>> [2016-07-18 16:35:28.352266] I 
>>>>> [gsyncd(/gluster/backupvol):710:main_i] <top>: syncing: 
>>>>> gluster://localhost:backupvol -> 
>>>>> ssh://root@ks4:gluster://localhost:backupvol
>>>>> [2016-07-18 16:35:28.352489] I [changelogagent(agent):73:__init__] 
>>>>> ChangelogAgent: Agent listining...
>>>>> [2016-07-18 16:35:28.492474] E 
>>>>> [syncdutils(/gluster/backupvol):252:log_raise_exception] <top>: 
>>>>> connection to peer is broken
>>>>> [2016-07-18 16:35:28.492706] E 
>>>>> [resource(/gluster/backupvol):226:errlog] Popen: command "ssh 
>>>>> -oPasswordAuthentication=no -oStrictHostKeyChecking=no -i 
>>>>> /var/lib/glusterd/geo-replication/secret.pem -p 22 
>>>>> -oControlMaster=auto -S 
>>>>> /tmp/gsyncd-aux-ssh-Fs2XND/b63292d563144e7818235d683516731d.sock 
>>>>> root at ks4 /nonexistent/gsyncd --session-owner 
>>>>> 3281242a-ab45-4a0d-99e5-2965b4ac5840 -N --listen --timeout 120 
>>>>> gluster://localhost:backupvol" returned with 255, saying:
>>>>> [2016-07-18 16:35:28.492794] E 
>>>>> [resource(/gluster/backupvol):230:logerr] Popen: ssh> 
>>>>> key_load_public: invalid format
>>>>> [2016-07-18 16:35:28.492863] E 
>>>>> [resource(/gluster/backupvol):230:logerr] Popen: ssh> Permission 
>>>>> denied (publickey,password).
>>>>> [2016-07-18 16:35:28.493004] I 
>>>>> [syncdutils(/gluster/backupvol):220:finalize] <top>: exiting.
>>>>> [2016-07-18 16:35:28.494045] I [repce(agent):92:service_loop] 
>>>>> RepceServer: terminating on reaching EOF.
>>>>> [2016-07-18 16:35:28.494204] I [syncdutils(agent):220:finalize] 
>>>>> <top>: exiting.
>>>>> [2016-07-18 16:35:28.494143] I [monitor(monitor):333:monitor] 
>>>>> Monitor: worker(/gluster/backupvol) died before establishing 
>>>>> connection
>>>>>
>>>>>
>>>>> I tried to fix them to the best of my knowledge but I am missing 
>>>>> something.
>>>>>
>>>>> Can you help me to fix it?
>>>>>
>>>>> Thanks,
>>>>> Alex
>>>>> _______________________________________________
>>>>> Gluster-users mailing list
>>>>> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>>>>> http://www.gluster.org/mailman/listinfo/gluster-users
>>>>
>>>
>>
>>
>>
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>
>
>
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