On Fri, Aug 21, 2015 at 2:37 AM, Alain RODRIGUEZ wrote:
> So what would be the procedure to go from EC2Snitch to GPFS ?
>
> I see 2 possibilities and I am not sure of the result of each of these:
>
> - Node by node, on a rolling restart way, and making sure that you use the
> f
Hi guys,
I am also wondering about this kind of stuff, since we are going out of AWS
and were using EC2Snitch. I felt free to write it here, since it looks
linked to previous comments.
@John, we have been using EC2Snitch for many years, and it just works fine
! Plus, we don't have to kee
PM, John Wong wrote:
>
>> What other benefits can Ec2Snitch provide in a single-region, multi-az
>> AWS deployment besides automatically setting dc and rack for you as the
>> snitch reads from EC2 metadata.
>> Obviously there is a concern with what if there is somethin
On Sun, Aug 2, 2015 at 6:22 PM, John Wong wrote:
> What other benefits can Ec2Snitch provide in a single-region, multi-az AWS
> deployment besides automatically setting dc and rack for you as the snitch
> reads from EC2 metadata.
> Obviously there is a concern with what if there
Hi
Based on
*
http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html
*
http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchGossipPF_c.html
What other benefits can Ec2Snitch provide in a single-region, multi-az AWS
deployment
7034156cbb
>>
>> On Wed, May 27, 2015 at 9:31 PM, Kaushal Shriyan <
>> kaushalshri...@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> Can somebody please share me details about setting up of EC2snitch in
>>> AWS single region which has availability
talling cassandra 2.0.xx on AWS:
> https://gist.github.com/aliakhtar/3649e412787034156cbb
>
> On Wed, May 27, 2015 at 9:31 PM, Kaushal Shriyan > wrote:
>
>> Hi,
>>
>> Can somebody please share me details about setting up of EC2snitch in AWS
>> single region
are me details about setting up of EC2snitch in AWS
> single region which has availability zone 1a and 1b? I am using Cassandra
> version 1.2.19 in the setup.
>
> I would appreciate your help.
>
> Regards,
>
> Kaushal
>
It's pretty straightforward - there is documentation here
<http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html>.
Simply set endpoint_snitch: Ec2Snitch in cassandra.yaml when creating the
cluster and create keyspaces with th
Hi Kaushal,
Here is the reference,
http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html
On Wed, May 27, 2015 at 9:31 AM, Kaushal Shriyan
wrote:
> Hi,
>
> Can somebody please share me details about setting up of EC2snitch in AWS
> single regi
Hi,
Can somebody please share me details about setting up of EC2snitch in AWS
single region which has availability zone 1a and 1b? I am using Cassandra
version 1.2.19 in the setup.
I would appreciate your help.
Regards,
Kaushal
gt;>
>
> 1) use 1.2.9 no matter what, instead of 1.2.5
> 2) if only *ever* will have clusters in EC2, EC2Snitch is fine, but read
> and understand CASSANDRA-3810, especially if not using vnodes
> 3) if *ever* may have clusters outside of EC2 + inside EC2, use
> GossipingPropertyFi
On Mon, Sep 9, 2013 at 11:21 AM, rash aroskar wrote:
> Are you suggesting deploying 1.2.9 only if using Cassandra "DC" outside of
> EC2 or if I wish to use rack replication at all?
>
1) use 1.2.9 no matter what, instead of 1.2.5
2) if only *ever* will have clusters in EC2, EC2
wledge using placement strategy EC2Snitch should take care of this.
> Is this correct? Do I need to specify any strategy options?
>
https://issues.apache.org/jira/browse/CASSANDRA-3810
Has background on how one must configure all rack aware snitches.
If you may ever have a Cassandra "
; I am planning my new cassandra 1.2.5 cluster with all nodes in single
>> region but divided among 2 availablity zones equally. I want to make sure
>> with replication factor 2 I get 1 copy in every availability zone. As per
>> my knowledge using placement strategy EC2Snitch should tak
Hello,
I am planning my new cassandra 1.2.5 cluster with all nodes in single
region but divided among 2 availablity zones equally. I want to make sure
with replication factor 2 I get 1 copy in every availability zone. As per
my knowledge using placement strategy EC2Snitch should take care of this
; > to using the auto_bootstrap ?
> >
> > "I prefer to use the offset method. Take the 6 tokens from your us-west DC
> > and add 100 to them for the new dc. "
> >
> > Any doc on this ? I am not aware of all the possibilities. Why is this the
>
> the best method according to you ?
> >
> > About seeds => "Yes. Have 3 from each."
> >
> > What is the point of this ?
> >
> > I didn't thought this change would be that tricky, thank you guys for
> these warnings and your help ;)
hy is this the
> best method according to you ?
>
> About seeds => "Yes. Have 3 from each."
>
> What is the point of this ?
>
> I didn't thought this change would be that tricky, thank you guys for these
> warnings and your help ;)
>
> Alain
>
t 7:41 AM, Alain RODRIGUEZ
> wrote:
> > I am wondering about the process to grow from one data center to a few of
> > them. First thing is we use EC2Snitch for now. So I guess we have to
> switch
> > to Ec2MultiRegionSnitch.
> >
> > c/ I am using the SimpleStra
On Thu, Apr 18, 2013 at 7:41 AM, Alain RODRIGUEZ wrote:
> I am wondering about the process to grow from one data center to a few of
> them. First thing is we use EC2Snitch for now. So I guess we have to switch
> to Ec2MultiRegionSnitch.
>
> c/ I am using the SimpleStrategy.
the same number of nodes in both DC's.
> 1/ Change the yaml conf on each of the 6 eu-west existing nodes
> - Ec2Snitch to Ec2MultiRegionSnitch
> - uncomment the broadcast_address and set the public ip of the node
> - let the private ip as defined right now the lis
is we use EC2Snitch for now. So I guess we have to switch
to Ec2MultiRegionSnitch.
Is that doable without any down-time ?
Our C* cluster : C*1.2.2, 6 EC2 m1.xLarge in eu-west already running,
wanting to add 3 m1.xLarge on us-east
I was planning to do it this way:
1/ Change the yaml conf on each
Hi,
As of Nov. 9, 2011 Amazon added us-west-2 (US West Oregon) region:
http://aws.typepad.com/aws/2011/11/now-open-us-west-portland-region.html
In looking at the EC2Snitch code (in the 0.8.x and 1.0.x branches), I see
it determining which data center (which I think is supposed to be
equivalent
Of course. Hoping one day I create an issue related to Ec2 that CAN
be reproduced...
https://issues.apache.org/jira/browse/CASSANDRA-3175
On Sat, Sep 10, 2011 at 10:10 PM, Jonathan Ellis wrote:
> Can you create a Jira ticket?
Can you create a Jira ticket?
On Sat, Sep 10, 2011 at 6:52 AM, Sasha Dolgy wrote:
> maybe it's related to this ...
> https://issues.apache.org/jira/browse/CASSANDRA-3114
>
> odd thing is, we haven't "moved" to Ec2Snitch ... been using it for
> quite a long ti
maybe it's related to this ...
https://issues.apache.org/jira/browse/CASSANDRA-3114
odd thing is, we haven't "moved" to Ec2Snitch ... been using it for
quite a long time now ...
On Sat, Sep 10, 2011 at 1:42 PM, Sasha Dolgy wrote:
> Upgraded one ring that has four nodes f
Upgraded one ring that has four nodes from 0.8.0 to 0.8.5 with only
one minor problem. It relates to Ec2Snitch when running a 'nodetool
ring' from two of the four nodes. the rest are all working fine:
Address DC Rack Status State Load Own
d.
>
> On Wed, Aug 10, 2011 at 7:55 PM, Viliam Holub wrote:
> >
> > Hi,
> >
> > I tried to switch to Ec2Snith. Although it correctly found the region:
> >
> > INFO 23:18:00,643 EC2Snitch using region: eu-west, zone: 1a.
> >
> > it started to
t correctly found the region:
>
> INFO 23:18:00,643 EC2Snitch using region: eu-west, zone: 1a.
>
> it started to report NullPointerException every second:
>
> ERROR 00:23:40,268 Internal error processing get_slice
> java.lang.NullPointerException
> at
> org.apac
Hi,
I tried to switch to Ec2Snith. Although it correctly found the region:
INFO 23:18:00,643 EC2Snitch using region: eu-west, zone: 1a.
it started to report NullPointerException every second:
ERROR 00:23:40,268 Internal error processing get_slice
java.lang.NullPointerException
at
Also for the new users like me, don't assume DC1 is a keyword like I did. A
working example of a keyspace in EC2 is:
create keyspace test with replication_factor=3 and strategy_options =
[{us-east:3}] and
placement_strategy='org.apache.cassandra.locator.NetworkTopologyStrategy';
For a single DC
One last coda, for other noobs to cassandra like me. If you use
NetworkTopologyStrategy with replication_factor > 1, make sure you have EC2
instance in multiple availability zones. I was doing baby steps, and tried
doing a cluster in one AZ (before spreading to multiple AZs) and was getting
the m
If you can use standard + encoded I would go with that.
Aaron
On 13 Apr 2011, at 07:07, William Oberman wrote:
> Excellent to know! (and yes, I figure I'll expand someday, so I'm glad I
> found this out before digging a hole).
>
> The other issue I've been pondering is a normal column family
Excellent to know! (and yes, I figure I'll expand someday, so I'm glad I
found this out before digging a hole).
The other issue I've been pondering is a normal column family of encoded
objects (in my case JSON) vs. a super column. Based on my use case, things
I've read, etc... right now I'm comi
NTS is overkill in the sense that it doesn't really benefit you in a
single DC, but if you think you may expand to another DC in the future
it's much simpler if you were already using NTS, than first migrating
to NTS (changing strategy is painful).
I can't think of any downsides to using NTS in a
Hi,
I'm getting closer to commiting to cassandra, and now I'm in system/IT
issues and questions. I'm in the amazon EC2 cloud. I previously used this
forum to discover the best practice for disk layouts (large instance + the
two ephemeral disks in RAID0 for data + root volume for everything else)
data is still manageable.
-sd
On Mar 22, 2011 5:05 PM, "Robert Coli" wrote:
> On Tue, Mar 22, 2011 at 7:19 AM, Sasha Dolgy wrote:
>> More, I suppose the question I'm after is, can the snitch method be
>> adjusted adhoc (with node restart) or once it's changed
On Tue, Mar 22, 2011 at 7:19 AM, Sasha Dolgy wrote:
> More, I suppose the question I'm after is, can the snitch method be
> adjusted adhoc (with node restart) or once it's changed from
> SimpleSnitch to Ec2Snitch that's it?
You can change Snitches on a cluster with data o
Hi Everyone,
Can the Ec2Snitch be enabled by adjusting the parameter in the
cassandra.yaml and restarting the node?
More, I suppose the question I'm after is, can the snitch method be
adjusted adhoc (with node restart) or once it's changed from
SimpleSnitch to Ec2Snitch that&#
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