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From Deno Vichas <d...@syncopated.net>
Subject Re: Taking a Cluster Wide Snapshot
Date Thu, 26 Apr 2012 06:39:41 GMT
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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