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From Suruchi Deodhar <>
Subject Re: Stable Priam version with Cassandra 1.2.5
Date Tue, 20 Aug 2013 22:38:18 GMT
Thanks Audrey for your reply.

Is anyone using Cassandra 1.2.* (1.2.5 in particular) in production? If
yes, what is the Priam version that you use?

I read at
that priam vnodes is a Work In Progress and vnodes is a major feature of
cassandra 1.2*.

If not Priam, what is the backup solution you use with cassandra 1.2*? What
strategies do you use for snapshots etc.?


On Tue, Aug 20, 2013 at 5:28 PM, Andrey Ilinykh <> wrote:

> latest versions of Priam use default properties defined in this file
> you can override all of them in SDB. I had the problem with priam.cass.startscript
> which points to /mnt/cassandra.
> Also check tomcat process permissions, it is supposed to modify
> cassandra.yaml file. Seed list may be one more issue, they use public IP
> instead of names, so they are not accessible unless you open port 7000 to
> everyone. Honestly, it was quite painful to use Priam 1.2
> Thank you,
>  Andrey
> On Tue, Aug 20, 2013 at 1:50 PM, Suruchi Deodhar <
>> wrote:
>> Hi,
>> This is more of a Priam question, but asking it in the Cassandra forum
>> since many of you may be using Priam to backup data from Cassandra.
>> We are planning to migrate to Cassandra 1.2.5 in production. Which is the
>> most stable version of Priam which is compatible with Cassandra 1.2.5 and
>> is production-ready?
>> I am currently testing Priam version 1.2 (from the git branch -
>> with cassandra 1.2.5. I
>> followed all the setup instructions from the Priam wiki. I have changed my
>> default property priam.cass.home to point to my cassandra installation
>> located at /usr/local/cassandra.
>> When I launch my auto scale group and log-in to the node, I see that
>> cassandra is not up. In the catalina.out, I see a line "Couldnt execute the
>> task because of /mnt/cassandra/conf/cassandra.yaml (No such file or
>> directory)". I believe that this is because the default cassandra home is
>> /mnt/cassandra in Priam version 1.2. But I have changed the priam.cass.home
>> attribute value in PriamProperties domain in SDB. Reading all the attribute
>> values for the items in PriamProperties domain in sdb returns correct
>> values. Is there something else that I need to change for Priam to locate
>> the correct cassandra home directory?
>> Further in the catalina.out log, I see the error - "Exception --> Status
>> Code: 403, AWS Service: Amazon S3, AWS Request ID: ....., AWS Error Code:
>> AccessDenied, AWS Error Message: Access Denied".
>> What other permissions do I need to set on my AWS instance for Priam to
>> startup with Cassandra?
>> Also, does anyone have a good architecture diagram of Priam with
>> Cassandra. It would be really useful to get a sense of how the system
>> works. Could not find it anywhere.
>> Thanks in advance for your help!
>> ~Suruchi

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