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From Tamar Fraenkel <ta...@tok-media.com>
Subject Re: Taking a Cluster Wide Snapshot
Date Tue, 01 May 2012 05:20:57 GMT
Thanks for posting the script.
I see that the snapshot is always a full one, and if I understand
correctly, it replaces the old snapshot on S3. Am I right?

*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, Apr 26, 2012 at 9:39 AM, Deno Vichas <deno@syncopated.net> wrote:

>  On 4/25/2012 11:34 PM, Shubham Srivastava wrote:
>
> Whats the best way(or the only way) to take a cluster wide backup of
> Cassandra. Cant find much of the documentation on the same.
>
>  I am using a MultiDC setup with cassandra 0.8.6.
>
>
>  Regards,
> Shubham
>
>  here's how i'm doing in AWS land using the DataStax AMI via a nightly
> cron job.  you'll need pssh and s3cmd -
>
>
> #!/bin/bash
> cd /home/ec2-user/ops
>
> echo "making snapshots"
> pssh -h prod-cassandra-nodes.txt -l ubuntu -P 'nodetool -h localhost -p
> 7199 clearsnapshot stocktouch'
> pssh -h prod-cassandra-nodes.txt -l ubuntu -P 'nodetool -h localhost -p
> 7199 snapshot stocktouch'
>
> echo "making tar balls"
> pssh -h prod-cassandra-nodes.txt -l ubuntu -P -t 0 'rm
> `hostname`-cassandra-snapshot.tar.gz'
> pssh -h prod-cassandra-nodes.txt -l ubuntu -P -t 0 'tar -zcvf
> `hostname`-cassandra-snapshot.tar.gz
> /raid0/cassandra/data/stocktouch/snapshots'
>
> echo "coping tar balls"
> pslurp -h prod-cassandra-nodes.txt -l ubuntu
> /home/ubuntu/*cassandra-snapshot.tar.gz .
>
> echo "tar'ing tar balls"
> tar -cvf cassandra-snapshots-all-nodes.tar 10*
>
> echo "pushing to S3"
> ../s3cmd-1.1.0-beta3/s3cmd put cassandra-snapshots-all-nodes.tar
> s3://stocktouch-backups
>
> echo "DONE!"
>
>

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