[Gluster-users] Gluster 3.2.0 and ucarp not working

bxmatus at gmail.com bxmatus at gmail.com
Mon Jun 6 01:50:41 PDT 2011


I see, i'm starting to understand that ... so in theory it should work
fine with normal IP, and after $ping-timeout seconds it should switch
to another node if one is dead, i'm i right ?

2011/6/6 Craig Carl <ccarl at gluster.com>:
> 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
>>>> _______________________________________________
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