Stable Priam version with Cassandra 1.2.5

[Suruchi Deodhar <su...@generalsentiment.com>]

 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 -
https://github.com/Netflix/Priam/tree/1.2) 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

Re: Stable Priam version with Cassandra 1.2.5

[Suruchi Deodhar <su...@generalsentiment.com>]

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 https://github.com/Netflix/Priam/wiki/Compatibility
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.?

Thanks,
Suruchi





On Tue, Aug 20, 2013 at 5:28 PM, Andrey Ilinykh <ai...@gmail.com> wrote:

> latest versions of Priam use default properties defined in this file
>
> https://github.com/Netflix/Priam/blob/master/priam/src/main/resources/Priam.properties
>
> 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 <
> suruchi.deodhar@generalsentiment.com> 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 -
>> https://github.com/Netflix/Priam/tree/1.2) 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
>>
>
>

Re: Stable Priam version with Cassandra 1.2.5

[Andrey Ilinykh <ai...@gmail.com>]

latest versions of Priam use default properties defined in this file
https://github.com/Netflix/Priam/blob/master/priam/src/main/resources/Priam.properties

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 <
suruchi.deodhar@generalsentiment.com> 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 -
> https://github.com/Netflix/Priam/tree/1.2) 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
>