Despliegue de Cassandra en la nube de Amazon

1. Cassandra
en Amazon EC2
José Hernández
Isthari
jose.Hernandez@isthari.com

2. Almacenamiento

3. Write path

4. Write path
/var/lib/cassandra/commitlog /var/lib/cassandra/data
keyspace_N
table_A
table_B

5. Backup

6. Tipo de instancia
DSE 4.0 IN MEMORY

7. Multi datacenter

8. AWS Regions

9. Distribución de réplicas

10. NetworkTopologyStrategy
cqlsh> create keyspace KEYSPACE_NAME with replication = {
‘class’: ‘NetworkTopologyStrategy’,
and strategy_options:eu-west = 6,
and strategy_options:us-west=3,
and strategy_options:south-east=3
}

11. Snitch
 /etc/dse/cassandra/Cassandra.yaml
 Propiedad endpoint_snitch
 PropertyFileSnitch, asignación IP => Datacenter y rack
 EC2Snitch
 EC2MultiRegionSnitch
 GossippingPropertyFileSnitch

12. Cluster
Datacenter: eu-west
=====================
-- Address Load Owns Rack
UN 192.168.1.200 128.81 MB 66.7% Rack1
UN 192.168.1.201 129.31 MB 66.7% Rack2
UN 192.168.1.202 129.28 MB 66.7% Rack3
Datacenter: us-west
=====================
-- Address Load Owns Rack
UN 192.168.2.200 128.81 MB 66.7% Rack1
UN 192.168.2.201 129.31 MB 66.7% Rack2
UN 192.168.2.202 129.28 MB 66.7% Rack3
Datacenter: south-west
=====================
-- Address Load Owns Rack
UN 192.168.3.200 128.81 MB 66.7% Rack1
…

13. Escalabilidad
http://techblog.netflix.com/2011/11/benchmarking-cassandra-scalability-on.html

14. Preguntas y sugerencias