[Gluster-users] Gluster 3.2.0 and ucarp not working

[Craig Carl]

Matus -
   If you are using the Gluster native client (mount -t glusterfs ...)
then ucarp/CTDB is NOT required and you should not install it. Always
use the real IPs when you are mounting with 'mount -t glusterfs...'.

Craig
 

On 6/6/11 1:16 AM, bxmatus at gmail.com wrote:
> Hi Craig,
>
> thanks for answer. I'm using replications - which is working ok,
> volume is mounted using -t glusterfs parameter, does it matter ?
> All nodes are using real IP's not virtual ( for probing etc ) , i'm
> using virtual only for mounting volume on client. I was waiting over
> 10 minutes for volume
> to "wake up" but it never start to work - it never switch to another
> node, even when UCARP was already pointing there, there was lot
> of "recovery" messages on log but no attemt to connect to second node.
>
> thanks
>
> Matus
>
>
> 2011/6/6 Craig Carl <ccarl at gluster.com>:
>> Matus -
>>
>> Gluster has automatic, built-in failover if you are using replica nodes.
>> ucarp is only required if you want highly available NFS mounts.
>>
>>   To use ucarp with Gluster you should -
>>        1. Install Gluster and create a replica volume. [1]
>>            1. DO NOT use the virtual IPs when you peer probe or create
>> the volume, that won't work.
>>            2. Set the ping-timeout volume option to 25 seconds. [2]
>>        2. Install and setup ucarp.
>>        3. Mount your NFS clients using the VIPs.
>>        4. Mount your glusterfs clients using the real IP addresses.
>>
>> We mostly use CTDB because it supports NFS and Samba, I can't attach a
>> document here but I'll email you directly with the documentation.
>>
>> [1]
>> http://gluster.com/community/documentation/index.php/Gluster_3.2:_Configuring_Distributed_Replicated_Volumes
>> [2]
>> http://gluster.com/community/documentation/index.php/Gluster_3.2:_Setting_Volume_Options
>>
>> Thanks,
>>
>> Craig
>>
>> --
>> Craig Carl, Senior Systems Engineer | Gluster
>> 408.829.9953(PST) | http://gluster.com
>> http://www.gluster.com/gluster-for-aws/
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE5666F925A557DD8
>>
>>
>> On 6/6/11 12:09 AM, bxmatus at gmail.com wrote:
>>> Hello everybody.
>>>
>>> I have a problem setting up gluster failover funcionality. Based on
>>> manual i setup ucarp which is working well ( tested with ping/ssh etc
>>> )
>>>
>>> But when i use virtual address for gluster volume mount and i turn off
>>> one of nodes machine/gluster will freeze until node is back online.
>>>
>>> My virtual ip is 3.200 and machine real ip is 3.233 and 3.5. In
>>> gluster log i can see:
>>>
>>> [2011-06-06 02:33:54.230082] I
>>> [client-handshake.c:913:client_setvolume_cbk] 0-atlas-client-1:
>>> Connected to 192.168.3.233:24009, attached to re
>>> mote volume '/atlas'.
>>> [2011-06-06 02:33:54.230116] I [afr-common.c:2514:afr_notify]
>>> 0-atlas-replicate-0: Subvolume 'atlas-client-1' came back up; going
>>> online.
>>> [2011-06-06 02:33:54.237541] I [fuse-bridge.c:3316:fuse_graph_setup]
>>> 0-fuse: switched to graph 0
>>> [2011-06-06 02:33:54.237801] I [fuse-bridge.c:2897:fuse_init]
>>> 0-glusterfs-fuse: FUSE inited with protocol versions: glusterfs 7.13
>>> kernel 7.13
>>> [2011-06-06 02:33:54.238757] I [afr-common.c:836:afr_fresh_lookup_cbk]
>>> 0-atlas-replicate-0: added root inode
>>> [2011-06-06 02:33:54.272650] I
>>> [client-handshake.c:913:client_setvolume_cbk] 0-atlas-client-0:
>>> Connected to 192.168.3.5:24009, attached to remo
>>> te volume '/atlas'.
>>>
>>>
>>> Even when IP i'm using at mount is 3.200 ... Its look like that at the
>>> end gluster is using real machine IP's even when i'm connecting to
>>> virtual. Is there a way
>>> how to turn this functionality off or it is just broken ?
>>>
>>> thanks for answer
>>>
>>> Matus
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org
>>> http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
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