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Posted to user@cassandra.apache.org by Selva Kumar <ww...@yahoo.com> on 2011/08/09 05:46:05 UTC
5 node cluster - Recommended seed configuration.
We have a 5 node Cassandra cluster. We use version 0.7.4. What is the recommended seed configuration. Here are some configurations, i have noticed.
Example 1:
-----------
One node being seed to itself.
node1:
seeds: node1, autobootstrap=false
node2:
seeds: node1, node3, autobootstrap=true
node3:
seeds: node2, node4, autobootstrap=true
node4:
seeds: node3, node5, autobootstrap=true
node5:
seeds: node1, node2, autobootstrap=true
Example 2:
-----------
node1:
seeds: node5,node2, autobootstrap=true
node2:
seeds: node1, node3, autobootstrap=true
node3:
seeds: node2, node4, autobootstrap=true
node4:
seeds: node3, node5, autobootstrap=true
node5:
seeds: node1, node2, autobootstrap=true
Thanks
Selva
Re: 5 node cluster - Recommended seed configuration.
Posted by aaron morton <aa...@thelastpickle.com>.
Also, don't use 0.7.4 use the most recent version of 0.7 or 0.8.
Amongst all the other fixes this one is definitely good to have around https://github.com/apache/cassandra/blob/cassandra-0.7.8/CHANGES.txt#L58
cheers
-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 10 Aug 2011, at 02:37, Evgeniy Ryabitskiy wrote:
> Thanks a lot!
>
> Maybe this should be placed at Cassandra FAQ.
> http://wiki.apache.org/cassandra/FAQ#seed has less information.
>
>
> --
> Evgeniy Ryabitskiy
>
>
Re: 5 node cluster - Recommended seed configuration.
Posted by Evgeniy Ryabitskiy <ev...@wikimart.ru>.
Thanks a lot!
Maybe this should be placed at Cassandra FAQ.
http://wiki.apache.org/cassandra/FAQ#seed has less information.
--
Evgeniy Ryabitskiy
Re: 5 node cluster - Recommended seed configuration.
Posted by Edward Capriolo <ed...@gmail.com>.
On Tue, Aug 9, 2011 at 10:07 AM, Evgeniy Ryabitskiy <
evgeniy.ryabitskiy@wikimart.ru> wrote:
>
> Rule of thumb, you should identify two servers in the cluster to be your
>> seed nodes.
>>
>>
>>
>
> Is this rule same for N node cluster? Any common practice/formula for seed
> number?
> Going to use about 10 nodes and extend it in a future.
>
>
>
> --
> Evgeniy Ryabitskiy
>
>
This comes up a lot. All you really need to know is:
1) pick two (or more) nodes per data center as seed nodes. Having more does
not hurt anything
2) sync the seed list to all your nodes
Other things that are helpful.
3) seeds are used during startup to discover the cluster
4) newer versions of cassandra persist the cluster topology making seeds
less important then they were in the 0.6.X series, where they were used
every startup
5) You can make a seed a node at any time. There is nothing special about
seed nodes. If you list the node in seed list it is a seed
6) seeds do not auto bootstrap (ie if a node has itself in its seed list it
will not automatically transfer data to itself) If you want a node to do
that bootstrap it first and then add it to seeds later. If you have no data
(new install) you do not have to worry about bootstrap or autobootstrap at
all.
Re: 5 node cluster - Recommended seed configuration.
Posted by Evgeniy Ryabitskiy <ev...@wikimart.ru>.
> Rule of thumb, you should identify two servers in the cluster to be your
> seed nodes.
>
>
>
Is this rule same for N node cluster? Any common practice/formula for seed
number?
Going to use about 10 nodes and extend it in a future.
--
Evgeniy Ryabitskiy
Re: 5 node cluster - Recommended seed configuration.
Posted by Indranath Ghosh <in...@gmail.com>.
Hi,
Rule of thumb, you should identify two servers in the cluster to be your
seed nodes.
And all the servers should point to these two seeds..
You should bring up the seed nodes first with autobootstrap set to false..
All other nodes should be added to the ring with autobootstrap=true and
pointing to the same seed nodes.
-indra
On Mon, Aug 8, 2011 at 8:46 PM, Selva Kumar <ww...@yahoo.com> wrote:
> We have a 5 node Cassandra cluster. We use version 0.7.4. What is the
> recommended seed configuration. Here are some configurations, i have
> noticed.
>
> Example 1:
> -----------
> One node being seed to itself.
> node1:
> seeds: node1, autobootstrap=false
> node2:
> seeds: node1, node3, autobootstrap=true
> node3:
> seeds: node2, node4, autobootstrap=true
> node4:
> seeds: node3, node5, autobootstrap=true
> node5:
> seeds: node1, node2, autobootstrap=true
>
> Example 2:
> -----------
> node1:
> seeds: node5,node2, autobootstrap=true
> node2:
> seeds: node1, node3, autobootstrap=true
> node3:
> seeds: node2, node4, autobootstrap=true
> node4:
> seeds: node3, node5, autobootstrap=true
> node5:
> seeds: node1, node2, autobootstrap=true
>
> Thanks
> Selva
>
>
>
--
*Indranath Ghosh
Phone: 408-813-9207*
Re: 5 node cluster - Recommended seed configuration.
Posted by Selva Kumar <ww...@yahoo.com>.
Thanks Samal
________________________________
From: samal <sa...@wakya.in>
To: user@cassandra.apache.org; Selva Kumar <ww...@yahoo.com>
Sent: Tuesday, August 9, 2011 12:23 AM
Subject: Re: 5 node cluster - Recommended seed configuration.
It is recommended that seed list should be same in all server so all server on same state.
It should be Lan IP not Loopback IP.
In seed node, auto bootstrap should be false
2 seed should be enough.
In your case it should be like:
node1:
seeds: node1, autobootstrap=false
node2:
seeds: node1,autobootstrap=true
node3:
seeds: node1, autobootstrap=true
node4:
seeds: node1, autobootstrap=true
node5:
seeds: node1, autobootstrap=true
or
node1:
seeds: node1,node2, autobootstrap=false
node2:seeds: node1,node2,autobootstrap=false (set it false after bootstrap)node3:
seeds: node1,node2, autobootstrap=true
node4:
seeds: node1, node2,autobootstrap=true
node5:
seeds: node1,node2, autobootstrap=true
/Samal
On Tue, Aug 9, 2011 at 9:16 AM, Selva Kumar <ww...@yahoo.com> wrote:
We have a 5 node Cassandra cluster. We use version 0.7.4. What is the recommended seed configuration. Here are some configurations, i have noticed.
>
>
>Example 1:
>-----------
>One node being seed to itself.
>
>node1:
>
> seeds: node1, autobootstrap=false
>node2:
> seeds: node1, node3, autobootstrap=true
>node3:
> seeds: node2, node4, autobootstrap=true
>node4:
> seeds: node3, node5, autobootstrap=true
>node5:
> seeds: node1, node2, autobootstrap=true
>
>
>Example 2:
>-----------
>
>node1:
>
> seeds: node5,node2, autobootstrap=true
>node2:
> seeds: node1, node3, autobootstrap=true
>node3:
> seeds: node2, node4, autobootstrap=true
>node4:
> seeds: node3, node5, autobootstrap=true
>node5:
> seeds: node1, node2, autobootstrap=true
>
>
>Thanks
>Selva
>
>
>
Re: 5 node cluster - Recommended seed configuration.
Posted by samal <sa...@wakya.in>.
It is recommended that seed list should be same in all server so all server
on same state.
It should be Lan IP not Loopback IP.
In seed node, auto bootstrap should be false
2 seed should be enough.
In your case it should be like:
node1:
seeds: node1, autobootstrap=false
node2:
seeds: node1,autobootstrap=true
node3:
seeds: node1, autobootstrap=true
node4:
seeds: node1, autobootstrap=true
node5:
seeds: node1, autobootstrap=true
or
node1:
seeds: node1,node2, autobootstrap=false
node2:
seeds: node1,node2,autobootstrap=false (set it false after bootstrap)
node3:
seeds: node1,node2, autobootstrap=true
node4:
seeds: node1, node2,autobootstrap=true
node5:
seeds: node1,node2, autobootstrap=true
/Samal
On Tue, Aug 9, 2011 at 9:16 AM, Selva Kumar <ww...@yahoo.com> wrote:
> We have a 5 node Cassandra cluster. We use version 0.7.4. What is the
> recommended seed configuration. Here are some configurations, i have
> noticed.
>
> Example 1:
> -----------
> One node being seed to itself.
> node1:
> seeds: node1, autobootstrap=false
> node2:
> seeds: node1, node3, autobootstrap=true
> node3:
> seeds: node2, node4, autobootstrap=true
> node4:
> seeds: node3, node5, autobootstrap=true
> node5:
> seeds: node1, node2, autobootstrap=true
>
> Example 2:
> -----------
> node1:
> seeds: node5,node2, autobootstrap=true
> node2:
> seeds: node1, node3, autobootstrap=true
> node3:
> seeds: node2, node4, autobootstrap=true
> node4:
> seeds: node3, node5, autobootstrap=true
> node5:
> seeds: node1, node2, autobootstrap=true
>
> Thanks
> Selva
>
>
>