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From Tamar Fraenkel <ta...@tok-media.com>
Subject Re: Failure in Cassandra Ring Running on ESXi (Ubuntu 11.10)
Date Thu, 15 Mar 2012 11:02:03 GMT
I don't see it in dsc-cassandra-1.0.7-bin.tar.gz.
Thanks
*Tamar Fraenkel *
Senior Software Engineer, TOK Media

[image: Inline image 1]

tamar@tok-media.com
Tel:   +972 2 6409736
Mob:  +972 54 8356490
Fax:   +972 2 5612956





2012/3/15 Hontvári József Levente <hontvari@flyordie.com>

>  You can copy the init.d script from the DataStax package.
>
> On 2012.03.15. 11:06, Tamar Fraenkel wrote:
>
> Yes I am using the cassandra community.
> Re-installing will be a hassle...
> Any idea how to just fix the daemon issue?
> Thanks
>  *Tamar Fraenkel *
> Senior Software Engineer, TOK Media
>
> [image: Inline image 1]
>
> tamar@tok-media.com
> Tel:   +972 2 6409736
> Mob:  +972 54 8356490
> Fax:   +972 2 5612956
>
>
>
>
>
> On Thu, Mar 15, 2012 at 11:56 AM, aaron morton <aaron@thelastpickle.com>wrote:
>
>>   I have a problem though. I installed cassandra following DataStax, and
>> cassandra is not a daemon
>>
>>  Are you using Cassandra for Data Stax Community ?
>>
>>  This will give you a nice install
>> http://wiki.apache.org/cassandra/DebianPackaging
>>
>>  Cheers
>>
>>     -----------------
>> Aaron Morton
>> Freelance Developer
>> @aaronmorton
>> http://www.thelastpickle.com
>>
>>   On 15/03/2012, at 10:38 PM, Tamar Fraenkel wrote:
>>
>>   Thanks for your prompt response.
>> I have a problem though. I installed cassandra following DataStax, and
>> cassandra is not a daemon. i.e. I have to manyally start it, and I don't
>> have a script /etc/init.d/cassandra.
>>
>>  For this reason, I need to restart it after rebooting my vm manually,
>> and it is not part of the rc...
>>
>>  Any good points on how to set up cassandra as a daemon?
>>
>>  Thanks,
>>
>>  *Tamar Fraenkel *
>> Senior Software Engineer, TOK Media
>>
>>   <tokLogo.png>
>>
>> tamar@tok-media.com
>> Tel:   +972 2 6409736
>> Mob:  +972 54 8356490
>> Fax:   +972 2 5612956
>>
>>
>>
>>
>>
>> On Thu, Mar 15, 2012 at 11:34 AM, aaron morton <aaron@thelastpickle.com>wrote:
>>
>>>   1. How can I prevent this? I guess my setup is limited, and this may
>>> happen, but is there a way to improve things.
>>>
>>>   Not really, you need more memory on the box.
>>>
>>>
>>>  2. Assuming that I will run out of memory from time to time, how do I
>>> setup a monit \ god task to restart cassandra in case it does.
>>>
>>>   Super simple, to the point of not been very good,
>>> /etc/monit/conf.d/cassandra.monitrc
>>> The monit docs are pretty good.
>>>
>>>  check process cassandra with pidfile /var/run/cassandra.pid
>>>   start program = "/etc/init.d/cassandra start"
>>>   stop program = "/etc/init.d/cassandra stop"
>>>
>>>  You will also need to prevent the init.d script from starting, i
>>> used update-rc.d
>>>
>>>  I'm not an ops guy; google is your friend; the monit docs are good.
>>>
>>>  Cheers
>>>
>>>
>>>        -----------------
>>> Aaron Morton
>>> Freelance Developer
>>> @aaronmorton
>>> http://www.thelastpickle.com
>>>
>>>   On 15/03/2012, at 8:44 PM, Tamar Fraenkel wrote:
>>>
>>>   I added a third node to the cluster. Sure enough, this morning I come
>>> and only one node is up, in the other two the cassandra process is not
>>> running.
>>>
>>>  In the cassandra log there is nothing, but in /var/log/syslog I see
>>>  In one node:
>>> Mar 15 07:50:51 Cassandra3 kernel: [58566.666906] Out of memory: Kill
>>> process 2840 (java) score 383 or sacrifice child
>>> Mar 15 07:50:51 Cassandra3 kernel: [58566.667066] Killed process 2840
>>> (java) total-vm:956792kB, anon-rss:689752kB, file-rss:21680kB
>>>  And in the other:
>>>  Mar 14 18:36:02 Cassandra2 kernel: [16262.267300] Out of memory: Kill
>>> process 2611 (java) score 409 or sacrifice child
>>> Mar 14 18:36:02 Cassandra2 kernel: [16262.267325] Killed process 2611
>>> (java) total-vm:968040kB, anon-rss:748644kB, file-rss:18436kB
>>>
>>>  Two questions:
>>> 1. How can I prevent this? I guess my setup is limited, and this may
>>> happen, but is there a way to improve things.
>>> 2. Assuming that I will run out of memory from time to time, how do I
>>> setup a monit \ god task to restart cassandra in case it does.
>>>
>>>  Thanks,
>>>
>>>  *Tamar Fraenkel *
>>> Senior Software Engineer, TOK Media
>>>
>>>   <tokLogo.png>
>>>
>>> tamar@tok-media.com
>>> Tel:   +972 2 6409736
>>> Mob:  +972 54 8356490
>>> Fax:   +972 2 5612956
>>>
>>>
>>>
>>>
>>>
>>> On Tue, Mar 13, 2012 at 11:12 AM, aaron morton <aaron@thelastpickle.com>wrote:
>>>
>>>> If you are on Ubuntu it may be this
>>>> http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs
>>>>
>>>>  otherwise I would look for GC problems.
>>>>
>>>>  Cheers
>>>>
>>>>
>>>>     -----------------
>>>> Aaron Morton
>>>> Freelance Developer
>>>> @aaronmorton
>>>> http://www.thelastpickle.com
>>>>
>>>>   On 13/03/2012, at 7:53 PM, Tamar Fraenkel wrote:
>>>>
>>>>   Done it. Now it generally runs ok, till one of the nodes get's stuck
>>>> with 100% cpu and I need to reboot it.
>>>>
>>>>  Last lines in the system.log just before are:
>>>>    INFO [OptionalTasks:1] 2012-03-13 07:36:43,850 MeteredFlusher.java
>>>> (line 62) flushing high-traffic column family CFS(Keyspace='tok',
>>>> ColumnFamily='tk_vertical_tag_story_indx') (estimated 35417890 bytes)
>>>>  INFO [OptionalTasks:1] 2012-03-13 07:36:43,869 ColumnFamilyStore.java
>>>> (line 704) Enqueuing flush of Memtable-tk_vertical_tag_story_indx@2002820169(1620316/35417890
>>>> serialized/live bytes, 30572 ops)
>>>>  INFO [FlushWriter:76] 2012-03-13 07:36:43,869 Memtable.java (line 246)
>>>> Writing Memtable-tk_vertical_tag_story_indx@2002820169(1620316/35417890
>>>> serialized/live bytes, 30572 ops)
>>>>  INFO [FlushWriter:76] 2012-03-13 07:36:44,015 Memtable.java (line 283)
>>>> Completed flushing
>>>> /opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-191-Data.db (2134123
>>>> bytes)
>>>>  INFO [OptionalTasks:1] 2012-03-13 07:37:37,886 MeteredFlusher.java
>>>> (line 62) flushing high-traffic column family CFS(Keyspace='tok',
>>>> ColumnFamily='tk_vertical_tag_story_indx') (estimated 34389135 bytes)
>>>>  INFO [OptionalTasks:1] 2012-03-13 07:37:37,887 ColumnFamilyStore.java
>>>> (line 704) Enqueuing flush of Memtable-tk_vertical_tag_story_indx@1869953681(1573252/34389135
>>>> serialized/live bytes, 29684 ops)
>>>>  INFO [FlushWriter:76] 2012-03-13 07:37:37,887 Memtable.java (line 246)
>>>> Writing Memtable-tk_vertical_tag_story_indx@1869953681(1573252/34389135
>>>> serialized/live bytes, 29684 ops)
>>>>  INFO [FlushWrit
>>>>
>>>>  Any idea?
>>>> I am considering adding a third node, so that replication factor of 2
>>>> won't stuck my system when one node goes down. Does it make sense?
>>>>
>>>>  Thanks
>>>>
>>>>
>>>>  *Tamar Fraenkel *
>>>> Senior Software Engineer, TOK Media
>>>>
>>>>   <tokLogo.png>
>>>>
>>>> tamar@tok-media.com
>>>> Tel:   +972 2 6409736
>>>> Mob:  +972 54 8356490
>>>> Fax:   +972 2 5612956
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Mar 6, 2012 at 7:51 PM, aaron morton <aaron@thelastpickle.com>wrote:
>>>>
>>>>>  Reduce these settings for the CF
>>>>> row_cache (disable it)
>>>>> key_cache (disable it)
>>>>>
>>>>>  Increase these settings for the CF
>>>>> bloom_filter_fp_chance
>>>>>
>>>>>  Reduce these settings in cassandra.yaml
>>>>>
>>>>>  flush_largest_memtables_at
>>>>> memtable_flush_queue_size
>>>>> sliced_buffer_size_in_kb
>>>>> in_memory_compaction_limit_in_mb
>>>>> concurrent_compactors
>>>>>
>>>>>
>>>>>  Increase these settings
>>>>> index_interval
>>>>>
>>>>>
>>>>>  While it obviously depends on load, I would not be surprised if you
>>>>> had a lot of trouble running cassandra with that setup.
>>>>>
>>>>>  Cheers
>>>>>  A
>>>>>
>>>>>
>>>>>     -----------------
>>>>> Aaron Morton
>>>>> Freelance Developer
>>>>> @aaronmorton
>>>>> http://www.thelastpickle.com
>>>>>
>>>>>   On 6/03/2012, at 11:02 PM, Tamar Fraenkel wrote:
>>>>>
>>>>>   Arron, Thanks for your response. I was afraid this is the issue.
>>>>> Can you give me some direction regarding the fine tuning of my VMs, I
>>>>> would like to explore that option some more.
>>>>> Thanks!
>>>>>
>>>>>  *Tamar Fraenkel *
>>>>> Senior Software Engineer, TOK Media
>>>>>
>>>>>   <tokLogo.png>
>>>>>
>>>>> tamar@tok-media.com
>>>>> Tel:   +972 2 6409736
>>>>> Mob:  +972 54 8356490
>>>>> Fax:   +972 2 5612956
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Mar 6, 2012 at 11:58 AM, aaron morton <aaron@thelastpickle.com
>>>>> > wrote:
>>>>>
>>>>>> You do not have enough memory allocated to the JVM and are suffering
>>>>>> from excessive GC as a result.
>>>>>>
>>>>>>  There are some tuning things you can try, but 480MB is not enough.
>>>>>> 1GB would be a better start, 2 better than that.
>>>>>>
>>>>>>  Consider using https://github.com/pcmanus/ccm for testing multiple
>>>>>> instances on a single server rather than a VM.
>>>>>>
>>>>>>  Cheers
>>>>>>
>>>>>>       -----------------
>>>>>> Aaron Morton
>>>>>> Freelance Developer
>>>>>> @aaronmorton
>>>>>> http://www.thelastpickle.com
>>>>>>
>>>>>>   On 6/03/2012, at 10:21 PM, Tamar Fraenkel wrote:
>>>>>>
>>>>>>   I have some more info, after couple of hours running the
>>>>>> problematic node became again 100% CPU and I had to reboot it, last
lines
>>>>>> from log show it did GC:
>>>>>>
>>>>>>   INFO [ScheduledTasks:1] 2012-03-06 10:28:00,880 GCInspector.java
>>>>>> (line 122) GC for Copy: 203 ms for 1 collections, 185983456 used;
max is
>>>>>> 513802240
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:28:50,595 GCInspector.java
>>>>>> (line 122) GC for Copy: 3927 ms for 1 collections, 156572576 used;
max is
>>>>>> 513802240
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:28:55,434 StatusLogger.java
>>>>>> (line 50) Pool Name                    Active   Pending   Blocked
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,298 StatusLogger.java
>>>>>> (line 65) ReadStage                         2         2         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,499 StatusLogger.java
>>>>>> (line 65) RequestResponseStage              0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,500 StatusLogger.java
>>>>>> (line 65) ReadRepairStage                   0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,500 StatusLogger.java
>>>>>> (line 65) MutationStage                     0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,500 StatusLogger.java
>>>>>> (line 65) ReplicateOnWriteStage             0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,500 StatusLogger.java
>>>>>> (line 65) GossipStage                       0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,501 StatusLogger.java
>>>>>> (line 65) AntiEntropyStage                  0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,501 StatusLogger.java
>>>>>> (line 65) MigrationStage                    0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,501 StatusLogger.java
>>>>>> (line 65) StreamStage                       0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,501 StatusLogger.java
>>>>>> (line 65) MemtablePostFlusher               0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,502 StatusLogger.java
>>>>>> (line 65) FlushWriter                       0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,502 StatusLogger.java
>>>>>> (line 65) MiscStage                         0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,502 StatusLogger.java
>>>>>> (line 65) InternalResponseStage             0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,502 StatusLogger.java
>>>>>> (line 65) HintedHandoff                     0         0         0
>>>>>>  INFO [ScheduledTasks:1] 2012-03-06 10:29:03,553 StatusLogger.java
>>>>>> (line 69) CompactionManager               n/a         0
>>>>>>
>>>>>>  Thanks,
>>>>>>
>>>>>>   *Tamar Fraenkel *
>>>>>> Senior Software Engineer, TOK Media
>>>>>>
>>>>>>  <tokLogo.png>
>>>>>>
>>>>>> tamar@tok-media.com
>>>>>> Tel:   +972 2 6409736
>>>>>> Mob:  +972 54 8356490
>>>>>> Fax:   +972 2 5612956
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>  On Tue, Mar 6, 2012 at 9:12 AM, Tamar Fraenkel <tamar@tok-media.com>wrote:
>>>>>>
>>>>>>>  Works..
>>>>>>>
>>>>>>>  But during the night my setup encountered a problem.
>>>>>>> I have two VMs on my cluster (running on VmWare ESXi).
>>>>>>> Each VM has1GB memory, and two Virtual Disks of 16 GB
>>>>>>> They are running on a small server with 4CPUs (2.66 GHz), and
4 GB
>>>>>>> memory (together with two other VMs)
>>>>>>> I put cassandra data on the second disk of each machine.
>>>>>>> VMs are running Ubuntu 11.10 and cassandra 1.0.7.
>>>>>>>
>>>>>>>  I left them running overnight and this morning when I came:
>>>>>>> In one node cassandra was down, and the last thing in the system.log
>>>>>>> is:
>>>>>>>
>>>>>>>   INFO [CompactionExecutor:150] 2012-03-06 00:55:04,821
>>>>>>> CompactionTask.java (line 113) Compacting
>>>>>>> [SSTableReader(path='/opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1243-Data.db'),
>>>>>>> SSTableReader(path='/opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1245-Data.db'),
>>>>>>> SSTableReader(path='/opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1242-Data.db'),
>>>>>>> SSTableReader(path='/opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1244-Data.db')]
>>>>>>>  INFO [CompactionExecutor:150] 2012-03-06 00:55:07,919
>>>>>>> CompactionTask.java (line 221) Compacted to
>>>>>>> [/opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1246-Data.db,].
>>>>>>>  32,424,771 to 26,447,685 (~81% of original) bytes for 58,938
keys at
>>>>>>> 8.144165MB/s.  Time: 3,097ms.
>>>>>>>
>>>>>>>
>>>>>>>  The other node was using all it's CPU and I had to restart it.
>>>>>>> After that, I can see that the last lines in it's system.log
are
>>>>>>> that the other node is down...
>>>>>>>
>>>>>>>   INFO [FlushWriter:142] 2012-03-06 00:55:02,418 Memtable.java
>>>>>>> (line 246) Writing Memtable-tk_vertical_tag_story_indx@1365852701(1122169/25154556
>>>>>>> serialized/live bytes, 21173 ops)
>>>>>>>  INFO [FlushWriter:142] 2012-03-06 00:55:02,742 Memtable.java
(line
>>>>>>> 283) Completed flushing
>>>>>>> /opt/cassandra/data/tok/tk_vertical_tag_story_indx-hc-1244-Data.db
(2075930
>>>>>>> bytes)
>>>>>>>  INFO [GossipTasks:1] 2012-03-06 08:02:18,584 Gossiper.java (line
>>>>>>> 818) InetAddress /10.0.0.31 is now dead.
>>>>>>>
>>>>>>>  How can I trace why that happened?
>>>>>>> Also, I brought cassandra up in both nodes. They both spend long
>>>>>>> time reading commit logs, but now they seem to run.
>>>>>>> Any idea how to debug or improve my setup?
>>>>>>> Thanks,
>>>>>>> Tamar
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>   *Tamar Fraenkel *
>>>>>>> Senior Software Engineer, TOK Media
>>>>>>>
>>>>>>>    <tokLogo.png>
>>>>>>>
>>>>>>>
>>>>>>> tamar@tok-media.com
>>>>>>> Tel:   +972 2 6409736
>>>>>>> Mob:  +972 54 8356490
>>>>>>> Fax:   +972 2 5612956
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Mon, Mar 5, 2012 at 7:30 PM, aaron morton <
>>>>>>> aaron@thelastpickle.com> wrote:
>>>>>>>
>>>>>>>> Create nodes that do not share seeds, and give the clusters
>>>>>>>> different names as a safety measure.
>>>>>>>>
>>>>>>>>  Cheers
>>>>>>>>
>>>>>>>>     -----------------
>>>>>>>> Aaron Morton
>>>>>>>> Freelance Developer
>>>>>>>> @aaronmorton
>>>>>>>> http://www.thelastpickle.com
>>>>>>>>
>>>>>>>>   On 6/03/2012, at 12:04 AM, Tamar Fraenkel wrote:
>>>>>>>>
>>>>>>>>   I want tow separate clusters.
>>>>>>>>   *Tamar Fraenkel *
>>>>>>>> Senior Software Engineer, TOK Media
>>>>>>>>
>>>>>>>>  <tokLogo.png>
>>>>>>>>
>>>>>>>>
>>>>>>>> tamar@tok-media.com
>>>>>>>> Tel:   +972 2 6409736
>>>>>>>> Mob:  +972 54 8356490
>>>>>>>> Fax:   +972 2 5612956
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Mon, Mar 5, 2012 at 12:48 PM, aaron morton <
>>>>>>>> aaron@thelastpickle.com> wrote:
>>>>>>>>
>>>>>>>>> Do you want to create two separate clusters or a single
cluster
>>>>>>>>> with two data centres ?
>>>>>>>>>
>>>>>>>>>  If it's the later, token selection is discussed here
>>>>>>>>> http://www.datastax.com/docs/1.0/install/cluster_init#token-gen-cassandra
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Moreover all tokens must be unique (even across datacenters),
>>>>>>>>> although - from pure curiosity - I wonder what is the
rationale behind this.
>>>>>>>>>
>>>>>>>>>  Otherwise data is not evenly distributed.
>>>>>>>>>
>>>>>>>>>   By the way, can someone enlighten me about the first
line in
>>>>>>>>> the output of the nodetool. Obviously it contains a token,
but nothing
>>>>>>>>> else. It seems like a formatting glitch, but maybe it
has a role.
>>>>>>>>>
>>>>>>>>>  It's the exclusive lower bound token for the first node
in the
>>>>>>>>> ring. This also happens to be the token for the last
node in the ring.
>>>>>>>>>
>>>>>>>>>  In your setup
>>>>>>>>> 10.0.0.19 "owns" (85070591730234615865843651857942052864+1)
to 0
>>>>>>>>> 10.0.0.28 "owns"  (0 + 1) to
>>>>>>>>> 85070591730234615865843651857942052864
>>>>>>>>>
>>>>>>>>>  (does not imply primary replica, just used to map keys
to nodes.)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>     -----------------
>>>>>>>>> Aaron Morton
>>>>>>>>> Freelance Developer
>>>>>>>>> @aaronmorton
>>>>>>>>> http://www.thelastpickle.com
>>>>>>>>>
>>>>>>>>>   On 5/03/2012, at 11:38 PM, Hontvári József Levente
wrote:
>>>>>>>>>
>>>>>>>>>    You have to use PropertyFileSnitch and NetworkTopologyStrategy
>>>>>>>>> to create a multi-datacenter setup with two circles.
You can start reading
>>>>>>>>> from this page:
>>>>>>>>>
>>>>>>>>> http://www.datastax.com/docs/1.0/cluster_architecture/replication#about-replica-placement-strategy
>>>>>>>>>
>>>>>>>>> Moreover all tokens must be unique (even across datacenters),
>>>>>>>>> although - from pure curiosity - I wonder what is the
rationale behind this.
>>>>>>>>>
>>>>>>>>> By the way, can someone enlighten me about the first
line in the
>>>>>>>>> output of the nodetool. Obviously it contains a token,
but nothing else. It
>>>>>>>>> seems like a formatting glitch, but maybe it has a role.
>>>>>>>>>
>>>>>>>>> On 2012.03.05. 11 <2012.03.05.%2011>:06, Tamar
Fraenkel wrote:
>>>>>>>>>
>>>>>>>>>  Hi!
>>>>>>>>> I have a Cassandra  cluster with two nodes
>>>>>>>>>
>>>>>>>>>  nodetool ring -h localhost
>>>>>>>>> Address         DC          Rack        Status State
  Load
>>>>>>>>>      Owns    Token
>>>>>>>>>
>>>>>>>>>              85070591730234615865843651857942052864
>>>>>>>>> 10.0.0.19       datacenter1 rack1       Up     Normal
 488.74 KB
>>>>>>>>>     50.00%  0
>>>>>>>>> 10.0.0.28       datacenter1 rack1       Up     Normal
 504.63 KB
>>>>>>>>>     50.00%  85070591730234615865843651857942052864
>>>>>>>>>
>>>>>>>>>  I want to create a second ring with the same name but
two
>>>>>>>>> different nodes.
>>>>>>>>> using tokengentool I get the same tokens as they are
affected from
>>>>>>>>> the number of nodes in a ring.
>>>>>>>>>
>>>>>>>>>  My question is like this:
>>>>>>>>> Lets say I create two new VMs, with IPs: 10.0.0.31 and
10.0.0.11
>>>>>>>>> *In 10.0.0.31 cassandra.yaml I will set*
>>>>>>>>> initial_token: 0
>>>>>>>>> seeds: "10.0.0.31"
>>>>>>>>> listen_address: 10.0.0.31
>>>>>>>>> rpc_address: 0.0.0.0
>>>>>>>>>
>>>>>>>>>  *In 10.0.0.11 cassandra.yaml I will set*
>>>>>>>>> initial_token: 85070591730234615865843651857942052864
>>>>>>>>> seeds: "10.0.0.31"
>>>>>>>>> listen_address: 10.0.0.11
>>>>>>>>> rpc_address: 0.0.0.0
>>>>>>>>>
>>>>>>>>>  *Would the rings be separate?*
>>>>>>>>>
>>>>>>>>>  Thanks,
>>>>>>>>>
>>>>>>>>>   *Tamar Fraenkel *
>>>>>>>>> Senior Software Engineer, TOK Media
>>>>>>>>>
>>>>>>>>>  <Mail Attachment.png>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> tamar@tok-media.com
>>>>>>>>> Tel:   +972 2 6409736
>>>>>>>>> Mob:  +972 54 8356490
>>>>>>>>> Fax:   +972 2 5612956
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

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